Apply live beacon settings and improve station map (#164)

Apply beacon checkbox changes at runtime and keep the aggregate status chip synchronized.

Improve explicit station-map navigation, spatial filter overlays, overlay legend, selected-path contrast, and the documented map screenshot.

.github/workflows/nightly-artifacts.yml

@@ -32,13 +32,16 @@ jobs:
   test:
     name: Test (Java 21, headless)
     runs-on: ubuntu-latest
+    # A healthy run takes about four minutes. The per-test limit in build.gradle.kts names
+    # a hanging test; this cap covers a hang outside any test, such as in Gradle itself.
+    timeout-minutes: 20
 
     steps:
       - name: Checkout
         uses: actions/checkout@v7
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -108,8 +111,10 @@ jobs:
             exit 1
           fi
 
+      # Also on cancelled(): the job timeout cancels a hanging run, and the reports of the
+      # classes that did finish carry the timed-out tests' full stacks.
       - name: Keep the test reports on a failure
-        if: failure()
+        if: failure() || cancelled()
         uses: actions/upload-artifact@v7
         with:
           name: test-results
@@ -138,7 +143,7 @@ jobs:
           Add-Content -Path $env:GITHUB_ENV -Value "ASSET_BASENAME=praktiKST-$version-$shortSha"
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -188,7 +193,7 @@ jobs:
           echo "ASSET_BASENAME=KST4Contest-${VERSION}-${SHORT_SHA}" >> "$GITHUB_ENV"
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -262,7 +267,7 @@ jobs:
           echo "ASSET_BASENAME=KST4Contest-${VERSION}-${SHORT_SHA}" >> "$GITHUB_ENV"
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -308,7 +313,7 @@ jobs:
           echo "ASSET_BASENAME=KST4Contest-${VERSION}-${SHORT_SHA}" >> "$GITHUB_ENV"
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -356,7 +361,7 @@ jobs:
           echo "ASSET_BASENAME=KST4Contest-${VERSION}-${SHORT_SHA}" >> "$GITHUB_ENV"
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -468,7 +473,7 @@ jobs:
           echo "ASSET_BASENAME=KST4Contest-${VERSION}-${SHORT_SHA}" >> "$GITHUB_ENV"
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -481,7 +486,7 @@ jobs:
           sudo apt-get update -qq
           sudo apt-get install -y --no-install-recommends flatpak flatpak-builder elfutils
           flatpak remote-add --user --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
-          flatpak --user install -y flathub org.freedesktop.Platform//24.08 org.freedesktop.Sdk//24.08
+          flatpak --user install -y flathub org.freedesktop.Platform//25.08 org.freedesktop.Sdk//25.08
 
       - name: Build app-image
         run: |
@@ -498,7 +503,7 @@ jobs:
           cat > target/de.x08.KST4Contest.yml << 'EOF'
           app-id: de.x08.KST4Contest
           runtime: org.freedesktop.Platform
-          runtime-version: "24.08"
+          runtime-version: "25.08"
           sdk: org.freedesktop.Sdk
           command: KST4Contest
           finish-args:
@@ -549,7 +554,7 @@ jobs:
       - name: Create flatpakref (nightly)
         run: |
           REPO_NAME="${GITHUB_REPOSITORY#*/}"
-          PAGES_URL="https://${GITHUB_REPOSITORY_OWNER}.github.io/${REPO_NAME}/"
+          PAGES_URL="https://${GITHUB_REPOSITORY_OWNER,,}.github.io/${REPO_NAME}/"
           GPG_KEY_B64=$(gpg --export "$FLATPAK_GPG_KEY_ID" | base64 -w 0)
           cat > "dist/de.x08.KST4Contest.nightly.flatpakref" << EOF
           [Flatpak Ref]
@@ -616,7 +621,7 @@ jobs:
           flatpak build-update-repo --gpg-sign="$FLATPAK_GPG_KEY_ID" .
           # Generate .flatpakrepo with embedded GPG key so users can do remote-add without errors
           REPO_NAME="${GITHUB_REPOSITORY#*/}"
-          PAGES_URL="https://${GITHUB_REPOSITORY_OWNER}.github.io/${REPO_NAME}/"
+          PAGES_URL="https://${GITHUB_REPOSITORY_OWNER,,}.github.io/${REPO_NAME}/"
           GPG_KEY_B64=$(gpg --export "$FLATPAK_GPG_KEY_ID" | base64 -w 0)
           cat > kst4contest.flatpakrepo << EOF
           [Flatpak Repo]
@@ -659,7 +664,7 @@ jobs:
           echo "ARCH=$ARCH" >> "$GITHUB_ENV"
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"

.github/workflows/pr-compile-check.yml

@@ -6,6 +6,9 @@ on:
       - main
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 env:
   FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
 
@@ -19,7 +22,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -155,13 +158,16 @@ jobs:
   test:
     name: Test (Java 21, headless)
     runs-on: ubuntu-latest
+    # A healthy run takes about four minutes. The per-test limit in build.gradle.kts names
+    # a hanging test; this cap covers a hang outside any test, such as in Gradle itself.
+    timeout-minutes: 20
 
     steps:
       - name: Checkout
         uses: actions/checkout@v7
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -283,8 +289,10 @@ jobs:
           if-no-files-found: ignore
           retention-days: 14
 
+      # Also on cancelled(): the job timeout cancels a hanging run, and the reports of the
+      # classes that did finish carry the timed-out tests' full stacks.
       - name: Keep the test reports on a failure
-        if: failure()
+        if: failure() || cancelled()
         uses: actions/upload-artifact@v7
         with:
           name: test-results

.github/workflows/tagged-release.yml

@@ -24,6 +24,9 @@ jobs:
   test:
     name: Test (Java 21, headless)
     runs-on: ubuntu-latest
+    # A healthy run takes about four minutes. The per-test limit in build.gradle.kts names
+    # a hanging test; this cap covers a hang outside any test, such as in Gradle itself.
+    timeout-minutes: 20
 
     steps:
       - name: Checkout
@@ -57,7 +60,7 @@ jobs:
           echo "Tag $REF_NAME matches composePackageVersion=$PROPERTY_VERSION"
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -127,8 +130,10 @@ jobs:
             exit 1
           fi
 
+      # Also on cancelled(): the job timeout cancels a hanging run, and the reports of the
+      # classes that did finish carry the timed-out tests' full stacks.
       - name: Keep the test reports on a failure
-        if: failure()
+        if: failure() || cancelled()
         uses: actions/upload-artifact@v7
         with:
           name: test-results
@@ -148,7 +153,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -217,7 +222,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -284,7 +289,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -355,7 +360,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -426,7 +431,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -529,7 +534,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -542,7 +547,7 @@ jobs:
           sudo apt-get update -qq
           sudo apt-get install -y --no-install-recommends flatpak flatpak-builder elfutils
           flatpak remote-add --user --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
-          flatpak --user install -y flathub org.freedesktop.Platform//24.08 org.freedesktop.Sdk//24.08
+          flatpak --user install -y flathub org.freedesktop.Platform//25.08 org.freedesktop.Sdk//25.08
 
       - name: Build app-image
         run: |
@@ -559,7 +564,7 @@ jobs:
           cat > target/de.x08.KST4Contest.yml << 'EOF'
           app-id: de.x08.KST4Contest
           runtime: org.freedesktop.Platform
-          runtime-version: "24.08"
+          runtime-version: "25.08"
           sdk: org.freedesktop.Sdk
           command: KST4Contest
           finish-args:
@@ -620,7 +625,7 @@ jobs:
       - name: Create flatpakref
         run: |
           REPO_NAME="${GITHUB_REPOSITORY#*/}"
-          PAGES_URL="https://${GITHUB_REPOSITORY_OWNER}.github.io/${REPO_NAME}/"
+          PAGES_URL="https://${GITHUB_REPOSITORY_OWNER,,}.github.io/${REPO_NAME}/"
           GPG_KEY_B64=$(gpg --export "$FLATPAK_GPG_KEY_ID" | base64 -w 0)
           cat > "dist/${FLATPAKREF_NAME}" << EOF
           [Flatpak Ref]
@@ -659,7 +664,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Java 21
-        uses: actions/setup-java@v6.0.1
+        uses: actions/setup-java@v6.1.0
         with:
           distribution: temurin
           java-version: "21"
@@ -827,7 +832,7 @@ jobs:
           flatpak build-update-repo --gpg-sign="$FLATPAK_GPG_KEY_ID" .
           # Generate .flatpakrepo with embedded GPG key so users can do remote-add without errors
           REPO_NAME="${GITHUB_REPOSITORY#*/}"
-          PAGES_URL="https://${GITHUB_REPOSITORY_OWNER}.github.io/${REPO_NAME}/"
+          PAGES_URL="https://${GITHUB_REPOSITORY_OWNER,,}.github.io/${REPO_NAME}/"
           GPG_KEY_B64=$(gpg --export "$FLATPAK_GPG_KEY_ID" | base64 -w 0)
           cat > kst4contest.flatpakrepo << EOF
           [Flatpak Repo]

.github/workflows/test-publish-version-xml.yml

@@ -3,6 +3,10 @@ name: TEST publish-version-xml (local only)
 on:
   workflow_dispatch:
 
+permissions:
+  contents: read
+  issues: read
+
 jobs:
   publish-version-xml:
     name: Publish Version Info XML via WebDAV
@@ -30,7 +34,7 @@ jobs:
 
           import os, urllib.request
 
-          REPO = 'praktimarc/kst4contest'
+          REPO = 'HamRadioOnline/kst4contest'
           token = os.environ['GH_TOKEN']
 
           def gh_get(path):

README.md

@@ -9,8 +9,8 @@ The application is developed by Marc Fröhlich (DO5AMF) and since 2026 Philipp W
 - [Project website](https://kst4contest.hamradioonline.de/)
 - [Download Stable, Beta and Nightly builds](https://kst4contest.hamradioonline.de/download/)
 - [Online manual](https://kst4contest.hamradioonline.de/manual/)
-- [GitHub wiki](https://github.com/praktimarc/kst4contest/wiki)
+- [GitHub wiki](https://github.com/HamRadioOnline/kst4contest/wiki)
-- [Issues and bug reports](https://github.com/praktimarc/kst4contest/issues)
+- [Issues and bug reports](https://github.com/HamRadioOnline/kst4contest/issues)
 - [Development roadmap](https://kst4contest.hamradioonline.de/roadmap/)
 
 ## What KST4Contest does
@@ -47,8 +47,8 @@ Use the central download page to select the appropriate build:
 
 The documentation is available in German and English:
 
-- [German manual](https://github.com/praktimarc/kst4contest/wiki/de-Home)
+- [German manual](https://github.com/HamRadioOnline/kst4contest/wiki/de-Home)
-- [English manual](https://github.com/praktimarc/kst4contest/wiki/en-Home)
+- [English manual](https://github.com/HamRadioOnline/kst4contest/wiki/en-Home)
 - [Online manual](https://kst4contest.hamradioonline.de/manual/)
 
 The Markdown sources used for the wiki and the generated PDF manuals are stored in [`github_docs`](github_docs/).
@@ -83,13 +83,13 @@ Windows:
 
 ### Documentation
 
-[![Publish wiki](https://github.com/praktimarc/kst4contest/actions/workflows/github-wiki.yml/badge.svg)](https://github.com/praktimarc/kst4contest/actions/workflows/github-wiki.yml)
+[![Publish wiki](https://github.com/HamRadioOnline/kst4contest/actions/workflows/github-wiki.yml/badge.svg)](https://github.com/HamRadioOnline/kst4contest/actions/workflows/github-wiki.yml)
 
-[![Docs PDF](https://github.com/praktimarc/kst4contest/actions/workflows/docs-pdf.yml/badge.svg)](https://github.com/praktimarc/kst4contest/actions/workflows/docs-pdf.yml)
+[![Docs PDF](https://github.com/HamRadioOnline/kst4contest/actions/workflows/docs-pdf.yml/badge.svg)](https://github.com/HamRadioOnline/kst4contest/actions/workflows/docs-pdf.yml)
 
 ### Builds
 
-[![Nightly Runtime Artifacts](https://github.com/praktimarc/kst4contest/actions/workflows/nightly-artifacts.yml/badge.svg)](https://github.com/praktimarc/kst4contest/actions/workflows/nightly-artifacts.yml)
+[![Nightly Runtime Artifacts](https://github.com/HamRadioOnline/kst4contest/actions/workflows/nightly-artifacts.yml/badge.svg)](https://github.com/HamRadioOnline/kst4contest/actions/workflows/nightly-artifacts.yml)
 
 ## License
 

app-desktop/src/main/i18n/strings_de.properties

@@ -122,6 +122,9 @@ station.password=Passwort
 station.pathSection=Vorgaben für die Streckenanalyse
 station.qtf=QTF
 station.rotatorEnabled=Rotorabgleich aktiv
+station.manualAntennaHeadingSection=Manuelle Antennenrichtung
+station.manualAntennaHeadingRotatorHint=Nicht verfügbar, solange PSTRotator 1 aktiviert ist
+station.useQtfFilterDirectionAsAntennaHeading=QTF-Filterrichtung als eigene Antennenrichtung übernehmen
 station.rotatorHost=Rotor-Host
 station.rotatorPort=Rotor-Port
 station.rotatorSection=PSTRotator
@@ -256,18 +259,26 @@ filter.onlyNewGrids=Nur neue Felder
 filter.gridColour=Feldfarbe
 filter.newBands=Neue Bänder
 filter.tropo=Tropo >=0dB
+filter.hide=Ausblenden
+filter.show=Anzeigen
+filter.reachability=Erreichbarkeit
+filter.calcSelected=Auswahl berechnen
+table.empty=Keine Einträge
 selected.none=Keine Station gewählt.
 selected.priority=Priorität:
+selected.newJoined=Neu hinzugekommen:
 selected.more=mehr
 selected.showMessages=Nachrichten zeigen
 selected.createSked=Sked anlegen
-selected.sked=Sked
+selected.sked=Sked alert
-selected.skedInMinutes=Sked in (Min.)
+selected.skedIn=Sked in
+selected.skedMinutesAt=Min., auf
+selected.skedModeLink=, Mode
+selected.minutes=Min.
 selected.skedFail=Sked fehlgeschlagen
 selected.remindPmIn=Erinnerungs-PM in
-selected.reminderOffsets=Erinnerungsabstände
 selected.resetFail=Zurücksetzen fehlgeschlagen
-selected.tagNotQrv=Als NOT QRV markieren
+selected.tagNotQrv={0} an folgenden Bändern als NOT QRV markieren:
 selected.band=Band
 selected.mode=Mode
 selected.lookUpAndShow=Nachschlagen und zeigen
@@ -280,6 +291,12 @@ selected.lastActivity=Letzte Aktivität: {0} (vor {1} Min.)
 candidates.title=Stationen mit höchster Priorität
 candidates.none=Noch keine Kandidaten.
 candidates.doubleClick=Doppelklick auf einen Kandidaten wählt ihn aus.
+timeline.inBeam1=Im Strahl 1
+timeline.inBeam2=Im Strahl 2
+timeline.priority1=Priorität 1
+timeline.priority2=Priorität 2
+timeline.skeds=Skeds
+timeline.minuteSuffix=min
 update.title=Aktualisierungsinformationen
 update.available=Aktualisierung verfügbar!
 update.installedVersion=Installierte Version:
@@ -294,12 +311,17 @@ update.versions=Versionen
 map.title=Stationskarte
 map.tab=Karte
 map.resetView=Ansicht zurücksetzen
-map.groupNearby=Nahe Stationen gruppieren
+map.groupNearby=Gruppierung
+map.groupNearbyTooltip=Nahe beieinanderliegende Stationen auf der Karte gruppieren.
+map.alwaysOnTop=Immer im Vordergrund
 map.triggerClusterSpot=Cluster-Spot auslösen
 map.showPathAnalysis=Streckenanalyse zeigen
 map.hidePathAnalysis=Streckenanalyse ausblenden
 map.pathAnalysisHidden=Die Streckenanalyse ist ausgeblendet.
 map.tilesUnavailable=Kartenkacheln nicht verfügbar — die Netzverbindung prüfen.
+map.overlayAntenna=Antenne
+map.overlayFilters=Aktive Filter
+map.overlayLegendTooltip=Rot: tatsächliche Antennenrichtung, Öffnungswinkel und maximaler QRB. Blau: aktive QTF- und QRB-Filter.
 path.title=Strecken- und Geländeanalyse
 path.selectStation=Eine Station wählen, um Strecken- und Geländeanalyse vorzubereiten.
 path.fromLocator=Vom Locator:
@@ -419,6 +441,16 @@ dialog.apply=Übernehmen
 chat.clear=leeren
 selected.showOnMap=🗺 Auf der Karte zeigen
 selected.notQrvAll=alle
+context.messageSnippets=Textbausteine
+context.createSked=Sked erstellen…
+context.tagNotQrv=Als NOT QRV markieren
+context.markWorked=Als gearbeitet markieren
+context.calculateReachability=Erreichbarkeit berechnen
+context.chooseStation=Station auswählen
+context.back=Zurück
+context.category=Kategorie {0}
+context.skedTitle=Sked für {0} erstellen
+context.cancel=Abbrechen
 column.category=Kategorie
 column.sender=Absender
 column.receiver=Empfänger
@@ -426,6 +458,7 @@ column.lastQrg=Letzte QRG
 column.airplane=AP [Minuten / Pot%]
 column.score=Wertung
 monitor.title=Cluster & Fremd-QSOs
+monitor.dxCluster=DX-Cluster
 profiles.createFailed=Das Profil konnte nicht angelegt werden. Die Profilliste konnte nicht geschrieben werden.
 profiles.createdWithoutCredentials=Das Profil „{0}" wurde ohne Rufzeichen und Passwort angelegt. Nach dem Wechsel zu diesem Profil beides im Reiter „Station" eintragen.
 profiles.duplicateFailed=Das Profil konnte nicht dupliziert werden.

app-desktop/src/main/i18n/strings_en.properties

@@ -131,6 +131,9 @@ station.password=Password
 station.pathSection=Path analysis defaults
 station.qtf=QTF
 station.rotatorEnabled=Rotator sync enabled
+station.manualAntennaHeadingSection=Manual antenna heading
+station.manualAntennaHeadingRotatorHint=Unavailable while PSTRotator 1 is enabled
+station.useQtfFilterDirectionAsAntennaHeading=Use QTF filter direction as antenna heading
 station.rotatorHost=Rotator host
 station.rotatorPort=Rotator port
 station.rotatorSection=PSTRotator
@@ -265,18 +268,26 @@ filter.onlyNewGrids=Only new grids
 filter.gridColour=Grid color
 filter.newBands=New bands
 filter.tropo=Tropo >=0dB
+filter.hide=Hide
+filter.show=Show
+filter.reachability=Reachability
+filter.calcSelected=Calc selected
+table.empty=No entries
 selected.none=No station selected.
 selected.priority=Priority:
+selected.newJoined=New joined:
 selected.more=more
 selected.showMessages=Show messages
 selected.createSked=Create sked
-selected.sked=Sked
+selected.sked=Sked alert
-selected.skedInMinutes=Sked in (min)
+selected.skedIn=Sked in
+selected.skedMinutesAt=min, at
+selected.skedModeLink=, mode
+selected.minutes=min
 selected.skedFail=Sked fail
-selected.remindPmIn=Remind-PM in
+selected.remindPmIn=Remind pm in
-selected.reminderOffsets=Reminder offsets
 selected.resetFail=Reset fail
-selected.tagNotQrv=Tag not QRV
+selected.tagNotQrv=Tag {0} not QRV at bands:
 selected.band=Band
 selected.mode=Mode
 selected.lookUpAndShow=Look up and show
@@ -289,6 +300,12 @@ selected.lastActivity=Last activity: {0} ({1} min ago)
 candidates.title=Top priority candidates
 candidates.none=No candidates yet.
 candidates.doubleClick=Double-click a candidate to select it.
+timeline.inBeam1=In beam 1
+timeline.inBeam2=In beam 2
+timeline.priority1=Priority 1
+timeline.priority2=Priority 2
+timeline.skeds=Skeds
+timeline.minuteSuffix=min
 update.title=Update information
 update.available=Update available!
 update.installedVersion=Installed version:
@@ -303,12 +320,17 @@ update.versions=Versions
 map.title=Station Map
 map.tab=Map
 map.resetView=Reset view
-map.groupNearby=Group nearby stations
+map.groupNearby=Grouping
+map.groupNearbyTooltip=Group stations that are close together on the map.
+map.alwaysOnTop=Always on top
 map.triggerClusterSpot=Trigger cluster spot
 map.showPathAnalysis=Show path analysis
 map.hidePathAnalysis=Hide path analysis
 map.pathAnalysisHidden=Path analysis is hidden.
 map.tilesUnavailable=Map tiles unavailable — check the network connection.
+map.overlayAntenna=Antenna
+map.overlayFilters=Active filters
+map.overlayLegendTooltip=Red: actual antenna heading, beamwidth and maximum QRB. Blue: active QTF and QRB filters.
 path.title=Path / terrain analysis
 path.selectStation=Select a station to prepare path and terrain analysis.
 path.fromLocator=From locator:
@@ -428,6 +450,16 @@ dialog.apply=Apply
 chat.clear=clear
 selected.showOnMap=🗺 Show on map
 selected.notQrvAll=all
+context.messageSnippets=Message snippets
+context.createSked=Create sked…
+context.tagNotQrv=Tag NOT QRV
+context.markWorked=Mark as worked
+context.calculateReachability=Calculate reachability
+context.chooseStation=Choose station
+context.back=Back
+context.category=Category {0}
+context.skedTitle=Create sked for {0}
+context.cancel=Cancel
 column.category=Category
 column.sender=Sender
 column.receiver=Receiver
@@ -435,6 +467,7 @@ column.lastQrg=Last QRG
 column.airplane=AP [minutes / pot%]
 column.score=Score
 monitor.title=Cluster & QSO of the other
+monitor.dxCluster=DX cluster
 profiles.createFailed=The profile could not be created. The profile registry could not be written.
 profiles.createdWithoutCredentials=The profile "{0}" was created without callsign and password. Enter them on the Station tab after switching to it.
 profiles.duplicateFailed=The profile could not be duplicated.

app-desktop/src/main/java/kst4contest/view/Kst4ContestApplication.java

@@ -10,6 +10,7 @@ import kst4contest.view.compose.DataTableState;
 import kst4contest.view.compose.MonitorColumns;
 import kst4contest.view.compose.MonitorWindow;
 import kst4contest.view.compose.RowKeys;
+import kst4contest.view.compose.ReachabilityState;
 import kst4contest.view.compose.BlinkingNotice;
 import kst4contest.view.compose.ThreadStatusButtons;
 import kst4contest.view.compose.StationColumns;
@@ -18,9 +19,16 @@ import kst4contest.view.compose.DirectedMessageColumns;
 import kst4contest.view.compose.PublicMessageColumns;
 import kst4contest.view.compose.SelectedMessageFilter;
 import kst4contest.view.compose.SelectedStationMessageColumns;
+import kst4contest.view.compose.SelectedStationMessagePredicate;
 import kst4contest.view.compose.SelectedStationState;
+import kst4contest.view.compose.DirectedMessageStationTarget;
+import kst4contest.view.compose.StationIdentity;
+import kst4contest.view.compose.StationSelectionSource;
+import kst4contest.view.compose.StationSelectionState;
 import kst4contest.view.compose.TopPriorityCandidatesWindow;
 import kst4contest.view.compose.TopPriorityState;
+import kst4contest.view.compose.NewJoinedState;
+import kst4contest.view.compose.SkedRequest;
 import kst4contest.view.compose.TimelineState;
 import kst4contest.view.compose.ChatInputState;
 import kst4contest.view.compose.MainMenuState;
@@ -77,6 +85,9 @@ import kst4contest.controller.OperatorProfilePaths;
 import kst4contest.model.OperatorProfile;
 import kst4contest.model.OperatorProfileSelection;
 import kst4contest.view.map.OfflineDemImportService;
+import kst4contest.view.map.MapCallsignRawSnapshot;
+import kst4contest.view.map.MapCallsignRawSnapshotBuilder;
+import kst4contest.view.map.PathAnalysisResult;
 import kst4contest.controller.WorkedGrossFieldCache;
 
 
@@ -121,8 +132,6 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 	private Predicate<ChatMember> lastAppliedChatMemberFilterPredicate = null;
 
 
-	private Band selectedReachabilityBandOverride = null;
-
 	private kst4contest.view.feed.TimelineFeed timelineFeed;
 	private kst4contest.view.feed.SelectedStationMessagesFeed selectedStationMessagesFeed;
 	private kst4contest.view.feed.ConnectionStateFeed connectionStateFeed;
@@ -264,6 +273,20 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 		}
 	}
 
+	/** Applies one radio mode to one exact station identity. */
+	private void applySelectedStationMessageFilter(
+			SelectedMessageFilter filter,
+			ChatMember selectedMember) {
+		if (filter == null) {
+			return;
+		}
+
+		applySelectedCallSignInfoFilter(SelectedStationMessagePredicate.forSelection(
+				filter,
+				selectedMember,
+				chatcontroller.getChatPreferences().getStn_loginCallSign()));
+	}
+
 	/** Follows the PSTRotator QTF in the text field; replaces a JavaFX string binding. */
 
 
@@ -2520,7 +2543,7 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 			return;
 		}
 		try {
-			Path logFile = Path.of(ApplicationFileUtils.getFilePath(
+			Path logFile = Path.of(ApplicationFileUtils.getDebugFilePath(
 					ApplicationConstants.APPLICATION_NAME,
 					"kst4contest-errors.log"));
 			// Start conservatively until the persisted preference has been loaded.
@@ -3005,9 +3028,24 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 	 */
 	private kst4contest.view.i18n.LanguageStore languageStore;
 	private java.util.function.Consumer<java.util.List<ChatMember>> composeMemberListener;
+	private java.util.function.Consumer<java.util.List<RecentChatJoin>> composeRecentJoinListener;
 	private java.util.function.Consumer<java.util.List<ChatMessage>> composeChatListener;
 	private java.util.function.Consumer<java.util.List<ClusterMessage>> composeClusterListener;
 
+	/**
+	 * Fills the three global Compose message tables from their filtered
+	 * controller views.
+	 */
+	/* package */ static void refreshComposeMessageTables(
+			final ChatController controller,
+			final DataTableState<ChatMessage> directed,
+			final DataTableState<ChatMessage> publicMessages,
+			final DataTableState<ChatMessage> qsoOfTheOther) {
+		directed.replaceRows(controller.toMeMessages());
+		publicMessages.replaceRows(controller.toAllMessages());
+		qsoOfTheOther.replaceRows(controller.toOtherMessages());
+	}
+
 	/**
 	 * Opens the Compose main window beside the JavaFX one.
 	 *
@@ -3050,20 +3088,45 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 		 * arrange separately while both windows are on screen; sharing the ids would let a
 		 * drag in one silently rearrange the other.
 		 */
+		EnumSet<Band> enabledStationBands =
+				BandOpportunityResolver.getEnabledStationBands(chatcontroller.getChatPreferences());
+		ReachabilityState reachability = new ReachabilityState(
+				enabledStationBands,
+				member -> chatcontroller.getReachabilityService().resolveAutoBand(member),
+				() -> composeMainWindowState == null
+						? null : composeMainWindowState.getSelectedStation().getSelected(),
+				(member, band) -> {
+					chatcontroller.getReachabilityService()
+							.calculateSelectedStationOnDemand(member, band);
+					return kotlin.Unit.INSTANCE;
+				},
+				() -> {
+					forceChatMemberFilterRefresh();
+					if (composeMainWindowState != null) {
+						composeMainWindowState.getStations().forceRedraw();
+					}
+					return kotlin.Unit.INSTANCE;
+				});
+		StationSelectionState stationSelection = new StationSelectionState();
+
 		DataTableState<ChatMember> stations = new DataTableState<>(
 				StationColumns.INSTANCE.all(
 						member -> {
-							Band band = resolveReachabilityBandForUi(member);
+							Band band = reachability.resolveBand(member);
 							chatcontroller.getReachabilityService()
 									.ensureTropoMarginCalculated(member, band);
 							return member.formatTropoSsbMarginForBand(band);
 						},
 						member -> parseTableDouble(formatPriorityScore(member)),
 						(member, band, worked) -> formatBandCellStatus(member, band, worked),
-						BandOpportunityResolver.getEnabledStationBands(chatcontroller.getChatPreferences())),
+						enabledStationBands),
 				RowKeys.INSTANCE.byValue(StationColumns.INSTANCE::rowKey),
 				"compose-stations",
-				widths);
+				widths,
+				"callsign",
+				true,
+				stationSelection,
+				true);
 
 		DataTableState<ChatMessage> directed = new DataTableState<>(
 				DirectedMessageColumns.INSTANCE.all(
@@ -3115,44 +3178,7 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 					if (filter == null) {
 						return kotlin.Unit.INSTANCE;
 					}
-					Predicate<ChatMessage> predicate;
+					applySelectedStationMessageFilter(filter, selectedCallSignInfoStageChatMember);
-					switch (filter) {
-						case PM_TO_ME:
-							predicate = chatMessage -> {
-								try {
-									if (chatMessage.getReceiver().getCallSign().equals("ALL") && !(chatMessage.getMessageText().toLowerCase().contains(chatcontroller.getChatPreferences().getStn_loginCallSign().toLowerCase()))) {
-										return false;
-									}
-									return ((chatMessage.getReceiver().getCallSign().equals(chatcontroller.getChatPreferences().getStn_loginCallSign())) || (chatMessage.getSender().getCallSign().equals(chatcontroller.getChatPreferences().getStn_loginCallSign()))) &&
-											((chatMessage.getReceiver().getCallSign().equals(selectedCallSignInfoStageChatMember.getCallSign())) || (chatMessage.getSender().getCallSign().equals(selectedCallSignInfoStageChatMember.getCallSign())));
-								} catch (Exception e) { return false; }
-							};
-							break;
-						case PM_TO_OTHER:
-							predicate = chatMessage -> {
-								try {
-									return (chatMessage.getSender().getCallSign().equals(selectedCallSignInfoStageChatMember.getCallSign()) && !chatMessage.getReceiver().getCallSign().equals("ALL") && !chatMessage.getReceiver().getCallSign().equals(chatcontroller.getChatPreferences().getStn_loginCallSign())) ||
-											(chatMessage.getReceiver().getCallSign().equals(selectedCallSignInfoStageChatMember.getCallSign()) && !chatMessage.getReceiver().getCallSign().equals("ALL") && !chatMessage.getReceiver().getCallSign().equals(chatcontroller.getChatPreferences().getStn_loginCallSign()));
-								} catch (Exception e) { return false; }
-							};
-							break;
-						case PUBLIC:
-							predicate = chatMessage -> {
-								try {
-									return chatMessage.getSender().getCallSign().equals(selectedCallSignInfoStageChatMember.getCallSign()) && chatMessage.getReceiver().getCallSign().equals("ALL");
-								} catch (Exception e) { return false; }
-							};
-							break;
-						case NOTHING:
-						default:
-							predicate = chatMessage -> {
-								try {
-									return chatMessage.getSender().getCallSign().equals(selectedCallSignInfoStageChatMember.getCallSign()) || chatMessage.getReceiver().getCallSign().equals(selectedCallSignInfoStageChatMember.getCallSign());
-								} catch (Exception e) { return false; }
-							};
-							break;
-					}
-					applySelectedCallSignInfoFilter(predicate);
 					return kotlin.Unit.INSTANCE;
 				},
 				member -> {
@@ -3174,24 +3200,25 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 					chatcontroller.rotateTo(kst4contest.controller.RadioSlot.SECOND, azimuth);
 					return kotlin.Unit.INSTANCE;
 				},
-				surroundings::getSecondAntennaOffered);
+				surroundings::getSecondAntennaOffered,
+				stationSelection);
+		selectedStation.setSkedRequestSubmitter(this::createSkedFromCompose);
 
-		if (chatcontroller.getChatPreferences().isGuiOptions_defaultFilterPmToMe()) {
+		selectedStation.setMessageFilter(
-			selectedStation.setMessageFilter(SelectedMessageFilter.PM_TO_ME);
+				SelectedMessageFilter.fromPreferences(chatcontroller.getChatPreferences()));
-		} else if (chatcontroller.getChatPreferences().isGuiOptions_defaultFilterPmToOther()) {
-			selectedStation.setMessageFilter(SelectedMessageFilter.PM_TO_OTHER);
-		} else {
-			selectedStation.setMessageFilter(SelectedMessageFilter.NOTHING);
-		}
 
 		TopPriorityState topPriority = new TopPriorityState(
 				this::composeTopStations,
-				member -> selectStationInCompose(selectedStation, stations, member));
+				member -> selectStationInCompose(selectedStation, member, StationSelectionSource.PRIORITY));
+		NewJoinedState newJoined = new NewJoinedState(
+				System::currentTimeMillis,
+				member -> selectStationInCompose(
+						selectedStation, member, StationSelectionSource.NEW_JOINED));
 
 		ChatInputState chatInput = new ChatInputState(new ComposeChatInputActions(this));
 
 		composeMainWindowState = new MainWindowState(
-				BandOpportunityResolver.getEnabledStationBands(chatcontroller.getChatPreferences()),
+				enabledStationBands,
 				chatcontroller.getChatPreferences(),
 				stations,
 				new StationFilterState(),
@@ -3238,7 +3265,29 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 									.setGUImainWindowRightSplitPane_dividerposition(positions);
 							requestLayoutSave();
 							return kotlin.Unit.INSTANCE;
-						}));
+						}),
+				new SplitterState(
+						MainWindowState.SELECTED_STATION_PANE_COUNT,
+						chatcontroller.getChatPreferences().getGUIselectedCallSignSplitPane_dividerposition(),
+						SplitterState.DEFAULT_MIN_PANE_PX,
+						positions -> {
+							chatcontroller.getChatPreferences()
+									.setGUIselectedCallSignSplitPane_dividerposition(positions);
+							requestLayoutSave();
+							return kotlin.Unit.INSTANCE;
+						}),
+				newJoined,
+				reachability);
+		composeMainWindowState.getThreadButtons().registerAction(
+				ChatController.BEACON_STATUS_SOURCE,
+				() -> {
+					chatcontroller.toggleUsableBeacons();
+					return kotlin.Unit.INSTANCE;
+				});
+		composeMainWindowState.getThreadButtons().registerStatusProvider(
+				ChatController.BEACON_STATUS_SOURCE,
+				chatcontroller::currentBeaconStatus);
+		chatcontroller.refreshBeaconStatus();
 
 		/*
 		 * The feed, not the window construction, owns the timeline's data from here.
@@ -3249,6 +3298,14 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 				composeMainWindowState.getTimeline(), uiDispatcher);
 		selectedStationMessagesFeed = new kst4contest.view.feed.SelectedStationMessagesFeed(
 				composeMainWindowState.getSelectedStationMessages(), uiDispatcher);
+		/*
+		 * Build the live message mirror before the first Compose selection. The
+		 * selection path already records the selected member before its legacy focus
+		 * callback runs, so waiting for that callback leaves the mirror null and the
+		 * table cannot receive either existing or newly arriving messages.
+		 */
+		rebuildSelectedCallSignInfoMessageBinding();
+		selectedStationMessagesFeed.push(selectedCallSignInfoMessageBinding.list());
 		connectionStateFeed = new kst4contest.view.feed.ConnectionStateFeed(
 				composeMainWindowState.getSurroundings(), uiDispatcher);
 
@@ -3258,19 +3315,62 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 		 * Subscribed first and seeded afterwards, so a message arriving in between is not
 		 * missed — the order RosterListBinding uses for the same reason.
 		 */
-		composeMemberListener = rows -> uiDispatcher.runOnUi(() -> stations.replaceRows(rows));
+		composeMemberListener = rows -> uiDispatcher.runOnUi(() -> {
+			stations.replaceRows(rows);
+			newJoined.updateActiveMembers(rows);
+		});
 		chatcontroller.getLst_chatMemberList().addListener(composeMemberListener);
+		composeRecentJoinListener = rows -> uiDispatcher.runOnUi(() -> newJoined.updateEvents(rows));
+		chatcontroller.getRecentChatJoins().addListener(composeRecentJoinListener);
 
-		composeMainWindowState.setStationSelector(member -> {
+		composeMainWindowState.setStationSelector((member, source) -> {
-			selectStationInCompose(selectedStation, stations, member);
+			selectStationInCompose(selectedStation, member, source);
+			return kotlin.Unit.INSTANCE;
+		});
+		composeMainWindowState.setStationFiltersChanged(() -> {
+			updateComposeFilters();
+			return kotlin.Unit.INSTANCE;
+		});
+		composeMainWindowState.setLayoutSaveRequested(() -> {
+			requestLayoutSave();
+			return kotlin.Unit.INSTANCE;
+		});
+		composeMainWindowState.setMarkStationWorked(
+				(member, band) -> chatcontroller.markStationWorkedOnBand(member, band));
+		composeMainWindowState.setWorkedGrossFieldsProvider(
+				() -> chatcontroller.getWorkedGrossFieldCache().snapshotWorkedGrossFieldsAny());
+		composeMainWindowState.getMapReachability().setRequester((member, band, callback) -> {
+			java.util.List<ChatMember> variants = chatcontroller.getLst_chatMemberList().snapshot()
+					.stream()
+					.filter(candidate -> candidate != null
+							&& java.util.Objects.equals(candidate.getCallSignRaw(), member.getCallSignRaw()))
+					.toList();
+			java.util.EnumSet<Band> bands = java.util.EnumSet.noneOf(Band.class);
+			bands.addAll(enabledStationBands);
+			MapCallsignRawSnapshot snapshot = new MapCallsignRawSnapshotBuilder()
+					.buildSnapshots(variants, member, bands)
+					.stream()
+					.findFirst()
+					.orElse(null);
+			if (snapshot == null) {
+				callback.invoke(PathAnalysisResult.waitingForValidTarget(
+						chatcontroller.getChatPreferences().getStn_loginLocatorMainCat(),
+						member.getQra()));
+				return kotlin.Unit.INSTANCE;
+			}
+			chatcontroller.getReachabilityService().requestPathAnalysisForMap(
+					member,
+					snapshot,
+					band,
+					result -> callback.invoke(result));
 			return kotlin.Unit.INSTANCE;
 		});
 
-		composeChatListener = rows -> uiDispatcher.runOnUi(() -> {
+		composeChatListener = rows -> uiDispatcher.runOnUi(() -> refreshComposeMessageTables(
-			directed.replaceRows(chatcontroller.toMeMessages());
+				chatcontroller,
-			publicMessages.replaceRows(rows);
+				directed,
-			qsoOfTheOther.replaceRows(chatcontroller.toOtherMessages());
+				publicMessages,
-		});
+				qsoOfTheOther));
 		chatcontroller.getLst_globalChatMessageList().addListener(composeChatListener);
 
 		composeClusterListener = rows -> uiDispatcher.runOnUi(() -> cluster.replaceRows(rows));
@@ -3281,11 +3381,12 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 		}
 		uiDispatcher.runOnUi(() -> topPriority.refresh());
 
-		stations.replaceRows(chatcontroller.getLst_chatMemberList().snapshot());
+		java.util.List<ChatMember> initialMembers = chatcontroller.getLst_chatMemberList().snapshot();
-		directed.replaceRows(chatcontroller.toMeMessages());
+		stations.replaceRows(initialMembers);
-		publicMessages.replaceRows(chatcontroller.getLst_globalChatMessageList().snapshot());
+		newJoined.updateActiveMembers(initialMembers);
+		newJoined.updateEvents(chatcontroller.getRecentChatJoins().snapshot());
+		refreshComposeMessageTables(chatcontroller, directed, publicMessages, qsoOfTheOther);
 		cluster.replaceRows(chatcontroller.getLst_clusterMemberList().snapshot());
-		qsoOfTheOther.replaceRows(chatcontroller.toOtherMessages());
 		/*
 		 * The only push that does not check the feed for null, and deliberately so: the
 		 * feed is assigned earlier in this same method, so a guard here could never fire
@@ -3336,7 +3437,6 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 					closeWindowEvent();
 					return kotlin.Unit.INSTANCE;
 				},
-				() -> composeSkedBands(selectedStation.getSelected()),
 				address -> runOnUi(() -> ExternalDocuments.open(address)),
 				() -> {
 					runOnUi(() -> showSelectedCallsignOnMap());
@@ -3348,8 +3448,9 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 					}
 					return kotlin.Unit.INSTANCE;
 				},
-				member -> selectStationInCompose(selectedStation, stations, member),
+				member -> selectStationInCompose(selectedStation, member, StationSelectionSource.STATION_TABLE),
-				message -> onDirectedMessageClickedInCompose(selectedStation, stations, composeMainWindowState.getChatInput(), message),
+				message -> onDirectedMessageClickedInCompose(selectedStation, composeMainWindowState.getChatInput(), message),
+				(message, source) -> onMessageSenderClickedInCompose(selectedStation, message, source),
 				this::isOwnChatMessage,
 				this::chatMessageAgeSeconds,
 				() -> {
@@ -3367,7 +3468,7 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 					ChatMember resolved = resolveChatMemberForCallRawAndCategory(
 							candidate.getCallSignRaw(), candidate.getPreferredChatCategory());
 					if (resolved != null) {
-						selectStationInCompose(selectedStation, stations, resolved);
+						selectStationInCompose(selectedStation, resolved, StationSelectionSource.TIMELINE);
 						composeMainWindowState.getChatInput().prepareCq(resolved.getCallSign(), false);
 						
 						// Sync with JavaFX state just in case
@@ -3391,6 +3492,29 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 			final int minutes,
 			final Band band,
 			final String mode) {
+		boolean remindPm = false;
+		String reminderOffsets = SelectedStationState.Companion.getREMINDER_OFFSETS().get(0);
+		if (composeMainWindowState != null) {
+			SelectedStationState state = composeMainWindowState.getSelectedStation();
+			remindPm = state.getRemindPm();
+			reminderOffsets = state.getReminderOffsets();
+		}
+		return createSkedFromCompose(new SkedRequest(
+				selectedMember,
+				minutes,
+				band,
+				mode,
+				remindPm,
+				reminderOffsets));
+	}
+
+	private boolean createSkedFromCompose(final SkedRequest request) {
+		if (request == null) {
+			return false;
+		}
+		final ChatMember selectedMember = request.getTarget();
+		final int minutes = request.getMinutes();
+		final Band band = request.getBand();
 
 		if (selectedMember == null || band == null) {
 			return false;
@@ -3412,17 +3536,14 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 		chatcontroller.getScoreService().requestRecompute("sked-created");
 
 		// Arm PM reminders, exactly as the JavaFX Create sked handler does
-		if (composeMainWindowState != null) {
+		if (request.getRemindPm()) {
-			SelectedStationState ssState = composeMainWindowState.getSelectedStation();
+				List<Integer> offsets = parseMinuteOffsets(request.getReminderOffsets());
-			if (ssState.getRemindPm()) {
-				List<Integer> offsets = parseMinuteOffsets(ssState.getReminderOffsets());
 				chatcontroller.getSkedReminderService().armReminders(
 						sked.getTargetChatCallsign(),
 						sked.getTargetChatCategory(),
 						skedTime,
 						offsets
 				);
-			}
 		}
 
 		return true;
@@ -3462,28 +3583,6 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 		return activeProfile.getProfile().getDisplayName();
 	}
 
-	/** The bands a sked can be arranged on for this station: enabled here, available there. */
-	private java.util.List<Band> composeSkedBands(ChatMember selectedMember) {
-		if (selectedMember == null) {
-			return java.util.List.of();
-		}
-
-		java.util.List<ChatMember> variants =
-				chatcontroller.findActiveChatMembersByRawCall(selectedMember.getCallSignRaw());
-		if (variants.isEmpty()) {
-			variants = java.util.List.of(selectedMember);
-		}
-
-		BandOpportunityResolver.Resolution resolution =
-				BandOpportunityResolver.resolve(variants, System.currentTimeMillis());
-		EnumSet<Band> enabledBands =
-				BandOpportunityResolver.getEnabledStationBands(chatcontroller.getChatPreferences());
-
-		EnumSet<Band> available = EnumSet.copyOf(resolution.getAvailableBands());
-		available.retainAll(enabledBands);
-		return new ArrayList<>(available);
-	}
-
 	/** The score service's ranking, as the Compose priority bar wants it. */
 	private java.util.List<kotlin.Pair<ChatMember, Double>> composeTopStations() {
 		java.util.List<kotlin.Pair<ChatMember, Double>> out = new ArrayList<>();
@@ -3515,21 +3614,13 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 	 */
 	private kotlin.Unit selectStationInCompose(
 			SelectedStationState panel,
-			DataTableState<ChatMember> table,
+			ChatMember member,
-			ChatMember member) {
+			StationSelectionSource source) {
 
-		panel.select(member);
+		panel.select(member, source);
-		table.select(member);
 		
 		selectedCallSignInfoStageChatMember = member;
-		if (selectedCallSignInfoMessageBinding != null) {
+		applySelectedStationMessageFilter(panel.getMessageFilter(), member);
-			selectedCallSignInfoMessageBinding.refresh();
-			uiDispatcher.runOnUi(() -> {
-				if (selectedStationMessagesFeed != null) {
-					selectedStationMessagesFeed.push(selectedCallSignInfoMessageBinding.list());
-				}
-			});
-		}
 
 		if (member != null && chatcontroller.getScoreService() != null) {
 			chatcontroller.getScoreService().setSelectedChatMember(member);
@@ -3545,26 +3636,41 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 
 	private kotlin.Unit onDirectedMessageClickedInCompose(
 			SelectedStationState panel,
-			DataTableState<ChatMember> stationsTable,
 			ChatInputState chatInput,
 			ChatMessage message) {
-		
+
+		String ownCall = chatcontroller.getChatPreferences().getStn_loginCallSign();
+		StationIdentity target = DirectedMessageStationTarget.forMessage(message, ownCall);
+		if (target == null) {
+			return kotlin.Unit.INSTANCE;
+		}
+
+		ChatMember activeTarget = chatcontroller.findActiveChatMember(target.getCallSign(), message.getChatCategory());
+		if (activeTarget != null) {
+			selectStationInCompose(panel, activeTarget, StationSelectionSource.DIRECTED_MESSAGE);
+		} else {
+			chatInput.prepareCq(target.getCallSign(), false);
+			if (message.getSender() != null && message.getSender().getCallSign().equalsIgnoreCase(ownCall)) {
+				rememberAutoPreparedCqTarget(target.getCallSign(), message.getChatCategory());
+			}
+		}
+
+		return kotlin.Unit.INSTANCE;
+	}
+
+	private kotlin.Unit onMessageSenderClickedInCompose(
+			SelectedStationState panel,
+			ChatMessage message,
+			StationSelectionSource source) {
 		if (message == null || message.getSender() == null) {
 			return kotlin.Unit.INSTANCE;
 		}
 
-		if (message.getSender().getCallSign().equals(chatcontroller.getChatPreferences().getStn_loginCallSign())) {
+		ChatMember sender = chatcontroller.findActiveChatMember(
-			String receiverCallsign = message.getMessageText().substring(2, message.getMessageText().indexOf(")"));
+				message.getSender().getCallSign(), message.getChatCategory());
-			chatInput.prepareCq(receiverCallsign, false);
+		if (sender != null) {
-			rememberAutoPreparedCqTarget(receiverCallsign, message.getChatCategory());
+			selectStationInCompose(panel, sender, source);
-		} else {
-			selectStationInCompose(panel, stationsTable, message.getSender());
-			
-			chatInput.prepareCq(message.getSender().getCallSign(), false);
-			prepareCqTextForSelectedChatMember(message.getSender(), false);
-			focusChatMemberAndPrepareCq(message.getSender(), false);
 		}
-
 		return kotlin.Unit.INSTANCE;
 	}
 
@@ -3620,6 +3726,10 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 			chatcontroller.getLst_chatMemberList().removeListener(composeMemberListener);
 			composeMemberListener = null;
 		}
+		if (composeRecentJoinListener != null) {
+			chatcontroller.getRecentChatJoins().removeListener(composeRecentJoinListener);
+			composeRecentJoinListener = null;
+		}
 		if (composeChatListener != null) {
 			chatcontroller.getLst_globalChatMessageList().removeListener(composeChatListener);
 			composeChatListener = null;
@@ -3706,9 +3816,25 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 		clusterTable.replaceRows(chatcontroller.getLst_clusterMemberList().snapshot());
 		qsoTable.replaceRows(chatcontroller.toOtherMessages());
 
+		/*
+		 * The same preference the JavaFX SplitPane wrote, so a profile gets back the
+		 * position its operator dragged before the Compose port (#144).
+		 */
+		SplitterState monitorSplitter = new SplitterState(
+				2,
+				chatcontroller.getChatPreferences().getGUIpnl_directedMSGWin_dividerpositionDefault(),
+				SplitterState.DEFAULT_MIN_PANE_PX,
+				positions -> {
+					chatcontroller.getChatPreferences()
+							.setGUIpnl_directedMSGWin_dividerpositionDefault(positions);
+					requestLayoutSave();
+					return kotlin.Unit.INSTANCE;
+				});
+
 		MonitorWindow.show(
 				clusterTable,
 				qsoTable,
+				monitorSplitter,
 				chatcontroller.getChatPreferences().isGUI_darkModeActive(),
 				SETTINGS_WINDOW_FONT_SIZE_SP,
 				paletteStore,
@@ -3809,7 +3935,12 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 					requestLayoutSave();
 					return kotlin.Unit.INSTANCE;
 				},
-				SettingsTabsKt.settingsButtons(chatcontroller, this, settingsNotices, draft));
+				SettingsTabsKt.settingsButtons(
+						chatcontroller,
+						this,
+						settingsNotices,
+						draft,
+						this::settingsConnectionState));
 	}
 
 	/*
@@ -4015,6 +4146,17 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 		});
 	}
 
+	@Override
+	public void refreshMapDisplaySettings() {
+		uiDispatcher.runOnUi(() -> {
+			if (composeMainWindowState == null) {
+				return;
+			}
+			composeMainWindowState.refreshMapDisplaySettings();
+			forceChatMemberFilterRefresh();
+		});
+	}
+
 	/**
 	 * No-op since the JavaFX own-QRG text field was removed with the never-shown window.
 	 *
@@ -4206,31 +4348,12 @@ public class Kst4ContestApplication implements StatusUpdateListener, SettingsHos
 	 * @return manually selected band or automatic band
 	 */
 	private Band resolveReachabilityBandForUi(ChatMember member) {
-		if (selectedReachabilityBandOverride != null) {
+		if (composeMainWindowState != null) {
-			return selectedReachabilityBandOverride;
+			return composeMainWindowState.getReachability().resolveBand(member);
 		}
 		return chatcontroller.getReachabilityService().resolveAutoBand(member);
 	}
 
-	/**
-	 * Parses the reachability ComboBox selection.
-	 *
-	 * @param selectedLabel selected UI text
-	 * @return selected band, or null for Auto
-	 */
-	private Band parseReachabilityBandSelection(String selectedLabel) {
-		if (selectedLabel == null || selectedLabel.isBlank() || "Auto".equalsIgnoreCase(selectedLabel)) {
-			return null;
-		}
-
-		for (Band band : Band.values()) {
-			if (selectedLabel.equalsIgnoreCase(band.getDisplayLabel())) {
-				return band;
-			}
-		}
-		return null;
-	}
-
 	/**
 	 * Formats the projected priority score for the station table.
 	 *

app-desktop/src/main/kotlin/kst4contest/view/compose/ChatInputRow.kt

@@ -3,7 +3,6 @@ package kst4contest.view.compose
 import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.TooltipArea
 import androidx.compose.foundation.background
-import androidx.compose.foundation.clickable
 import androidx.compose.foundation.border
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
@@ -17,7 +16,6 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.layout.widthIn
 import androidx.compose.foundation.text.BasicTextField
-import androidx.compose.material3.LocalTextStyle
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
@@ -37,9 +35,8 @@ import androidx.compose.ui.input.key.KeyEventType
 import androidx.compose.ui.input.key.key
 import androidx.compose.ui.input.key.onPreviewKeyEvent
 import androidx.compose.ui.input.key.type
-import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.graphics.luminance
 import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.dp
 import kst4contest.model.ChatPreferences
 
@@ -59,9 +56,13 @@ fun ShortcutButtonRow(
     modifier: Modifier = Modifier,
 ) {
     FlowRow(
-        modifier = modifier.fillMaxWidth().padding(horizontal = 2.dp, vertical = 0.dp),
+        modifier = modifier
-        horizontalArrangement = Arrangement.spacedBy(0.dp),
+            .fillMaxWidth()
-        verticalArrangement = Arrangement.spacedBy(0.dp),
+            .background(MaterialTheme.colorScheme.surfaceVariant.copy(alpha = 0.35f))
+            .border(Density.HAIRLINE, MaterialTheme.colorScheme.outlineVariant)
+            .padding(horizontal = 2.dp, vertical = 1.dp),
+        horizontalArrangement = Arrangement.spacedBy(2.dp),
+        verticalArrangement = Arrangement.spacedBy(2.dp),
     ) {
         shortcuts.forEach { shortcut ->
             when (shortcut) {
@@ -109,38 +110,9 @@ private fun ShortcutButton(label: String, accented: Boolean, onClick: () -> Unit
         return
     }
 
-    val palette = LocalJavaFxPalette.current
+    Form.button(text = label, accented = true, onClick = onClick)
-    Box(
-        modifier = Modifier
-            .heightIn(min = Density.BUTTON_MIN_HEIGHT)
-            .background(
-                brush = if (palette.windowBackground.luminance() < 0.5f) {
-                    androidx.compose.ui.graphics.Brush.linearGradient(
-                        colors = listOf(Color(0xFF008000), Color(0xFF90EE90))
-                    )
-                } else {
-                    androidx.compose.ui.graphics.Brush.linearGradient(
-                        colors = listOf(Color(0xFF00FFFF), Color(0xFFFF99FF))
-                    )
-                },
-                shape = Density.BUTTON_SHAPE
-            )
-            .clickable { onClick() }
-            .padding(Density.BUTTON_CONTENT_PADDING),
-        contentAlignment = Alignment.Center,
-    ) {
-        Text(
-            text = label,
-            color = MYQRG_LABEL_COLOR,
-            style = MaterialTheme.typography.labelLarge,
-            maxLines = 1,
-        )
-    }
 }
 
-/** `-fx-text-fill: #395306` from `.buttonMyQrg1`; a dark olive that reads on the green. */
-private val MYQRG_LABEL_COLOR = Color(0xFF395306)
-
 /**
  * The send row: the message field, TX, clear, and the three small fields the operator
  * keeps their own frequencies and antenna heading in.
@@ -207,6 +179,7 @@ fun ChatInputRow(
             stored = antennaQtf.value?.toString().orEmpty(),
             onCommit = { text -> text.toDoubleOrNull()?.let { prefs.getActualQTF().set(it) } },
             tooltip = kst4contest.view.i18n.CurrentStrings.get().chatQtfTooltip,
+            width = QTF_FIELD_WIDTH,
         )
         if (so2rEnabled) {
             // Display only: rotator 2 writes it, the operator does not.
@@ -215,6 +188,7 @@ fun ChatInputRow(
                 onCommit = { },
                 tooltip = kst4contest.view.i18n.CurrentStrings.get().chatQtf2Tooltip,
                 editable = false,
+                width = QTF_FIELD_WIDTH,
             )
         }
     }
@@ -234,6 +208,7 @@ private fun InlineCommittedField(
     onCommit: (String) -> Unit,
     tooltip: String,
     editable: Boolean = true,
+    width: Dp = QRG_FIELD_WIDTH,
 ) {
     var draft by remember(stored) { mutableStateOf(stored) }
 
@@ -243,7 +218,7 @@ private fun InlineCommittedField(
             onValueChange = { draft = it },
             enabled = editable,
             modifier = Modifier
-                .width(QRG_FIELD_WIDTH)
+                .width(width)
                 .onFocusChanged { focus ->
                     if (!focus.isFocused && draft != stored) onCommit(draft)
                 },
@@ -267,7 +242,8 @@ private fun TooltipChip(text: String) {
     }
 }
 
-private val QRG_FIELD_WIDTH = 70.dp
+private val QRG_FIELD_WIDTH = 96.dp
+private val QTF_FIELD_WIDTH = 56.dp
 
 /**
  * The message field.
@@ -276,6 +252,7 @@ private val QRG_FIELD_WIDTH = 70.dp
  * both were on the scene in JavaFX, which means they worked wherever the focus was; here
  * they are on the field, and the window handles them for the rest of the surface.
  */
+@OptIn(ExperimentalFoundationApi::class)
 @Composable
 private fun MessageField(
     state: ChatInputState,
@@ -284,12 +261,21 @@ private fun MessageField(
 ) {
     val scheme = MaterialTheme.colorScheme
 
+    TooltipArea(
+        tooltip = {
+            if (state.value.text.isNotBlank()) {
+                TooltipChip(state.value.text)
+            }
+        },
+        modifier = modifier,
+    ) {
     Box(
-        modifier = modifier
+        modifier = Modifier
-            .heightIn(min = Density.FIELD_MIN_HEIGHT)
+            .fillMaxWidth()
+            .heightIn(min = Density.CONTROL_HEIGHT)
             .border(1.5.dp, scheme.primary, Density.BUTTON_SHAPE)
             .background(scheme.surface, Density.BUTTON_SHAPE)
-            .padding(horizontal = 6.dp, vertical = 4.dp),
+            .padding(horizontal = 6.dp),
         contentAlignment = Alignment.CenterStart,
     ) {
         BasicTextField(
@@ -307,10 +293,11 @@ private fun MessageField(
                     }
                 },
             singleLine = true,
-            textStyle = LocalTextStyle.current.copy(color = scheme.onSurface),
+            textStyle = compactControlTextStyle().copy(color = scheme.onSurface),
             cursorBrush = SolidColor(scheme.primary),
         )
     }
+    }
 }
 
 /** The vertical separator that sets the frequency fields apart from the send controls. */
@@ -319,7 +306,7 @@ private fun VerticalRule() {
     Box(
         Modifier
             .width(Density.HAIRLINE)
-            .height(Density.FIELD_MIN_HEIGHT)
+            .height(Density.CONTROL_HEIGHT)
             .background(MaterialTheme.colorScheme.outline),
     )
 }

app-desktop/src/main/kotlin/kst4contest/view/compose/ConnectionBar.kt

@@ -7,15 +7,9 @@ import androidx.compose.foundation.layout.Row
 import androidx.compose.runtime.Composable
 import kst4contest.view.i18n.LocalStrings
 import kst4contest.view.i18n.Strings
-import kst4contest.controller.ChatController
+import kst4contest.controller.On4KstConnectionState
 import kst4contest.model.ChatPreferences
 
-/**
- * The connection state the button bar shows. Derived from the controller rather than
- * held, because the session also connects and drops outside this window.
- */
-enum class ConnectionState { DISCONNECTED, CONNECTED_NOT_LOGGED_IN, LOGGED_IN }
-
 /**
  * The button bar at the bottom of the settings window.
  *
@@ -26,16 +20,9 @@ enum class ConnectionState { DISCONNECTED, CONNECTED_NOT_LOGGED_IN, LOGGED_IN }
  */
 class ConnectionBarState(
     private val prefs: ChatPreferences,
-    private val controller: ChatController,
+    private val connectionState: () -> On4KstConnectionState,
 ) {
 
-    val connectionState: ConnectionState
-        get() = when {
-            controller.isConnectedAndLoggedIn -> ConnectionState.LOGGED_IN
-            controller.isConnectedAndNOTLoggedIn -> ConnectionState.CONNECTED_NOT_LOGGED_IN
-            else -> ConnectionState.DISCONNECTED
-        }
-
     /**
      * The label of the Connect button, which names the chat the station will land in —
      * and both chats when the second one is enabled, so the operator sees before
@@ -62,13 +49,13 @@ class ConnectionBarState(
             return label
         }
 
-    /** Only a disconnected session can connect; the JavaFX button locked itself. */
+    /** A new attempt is safe only after the manager has completed its disconnect. */
     val canConnect: Boolean
-        get() = connectionState != ConnectionState.LOGGED_IN
+        get() = connectionState() == On4KstConnectionState.DISCONNECTED
 
-    /** Disconnecting needs a session that is actually logged in. */
+    /** A running attempt, online session or reconnect wait can be stopped by the operator. */
     val canDisconnect: Boolean
-        get() = connectionState == ConnectionState.LOGGED_IN
+        get() = connectionState().isConnectionAttemptActive
 }
 
 @OptIn(ExperimentalLayoutApi::class)

app-desktop/src/main/kotlin/kst4contest/view/compose/DataTableState.kt

@@ -162,6 +162,28 @@ interface ColumnWidthStore {
     fun requestSave()
 }
 
+/**
+ * Optional shared row selection for tables whose selected entity is also displayed by
+ * other components. Ordinary event tables keep their selection inside [DataTableState].
+ */
+interface TableSelectionModel<T> {
+
+    val selected: T?
+
+    /** Changes whenever [selected] changes, including a repeated explicit selection. */
+    val selectionRevision: Long
+
+    /** Changes only when the table should scroll to the current selection. */
+    val scrollRequestRevision: Long
+
+    fun select(row: T?)
+
+    /** Replaces the selected instance after a roster refresh without requesting a scroll. */
+    fun reconcile(row: T?)
+
+    fun requestScroll()
+}
+
 /**
  * The state of a multi-column table: its rows, its sorting and its selection.
  *
@@ -170,12 +192,16 @@ interface ColumnWidthStore {
  * data that shows up as a stale display rather than as an unresponsive one — harder
  * to notice and worse in effect.
  */
-class DataTableState<T>(
+class DataTableState<T> @JvmOverloads constructor(
     val columns: List<DataColumn<T>>,
     private val rowKey: RowKeySource<T>,
     /** Part of the stored layout: renaming it loses the operator's column sizing. */
     private val tableId: String = "",
     private val widths: ColumnWidthStore? = null,
+    initialSortColumnId: String? = null,
+    initialSortAscending: Boolean = true,
+    private val selectionModel: TableSelectionModel<T>? = null,
+    private val keepSelectionVisible: Boolean = false,
 ) {
 
     /**
@@ -251,19 +277,29 @@ class DataTableState<T>(
     var rows: List<T> by mutableStateOf(emptyList())
         private set
 
-    var sortedColumnId: String? by mutableStateOf(null)
+    var sortedColumnId: String? by mutableStateOf(
+        initialSortColumnId?.takeIf { requested -> columns.any { it.id == requested } },
+    )
         private set
 
-    var sortAscending: Boolean by mutableStateOf(true)
+    var sortAscending: Boolean by mutableStateOf(initialSortAscending)
         private set
 
     private var selectedKey: Any? by mutableStateOf(null)
 
-    private var sortedCache: List<T>? = null
+    private var internalSelectionRevision: Long by mutableStateOf(0L)
+
+    private var internalScrollRequestRevision: Long by mutableStateOf(0L)
+
+    private var filteredCache: List<T>? = null
+
+    private var visibleCache: List<T>? = null
+
+    private var cachedSelectionRevision: Long = Long.MIN_VALUE
 
     private var _rowFilter by mutableStateOf<((T) -> Boolean)?>(null, androidx.compose.runtime.neverEqualPolicy())
     
-    /** Optional filter predicate. If set, [visibleRows] will only include matching rows. */
+    /** Optional filter predicate. If set, [filteredRows] only includes matching rows. */
     var rowFilter: ((T) -> Boolean)?
         get() = _rowFilter
         set(value) {
@@ -294,7 +330,7 @@ class DataTableState<T>(
      * per inbound message on the thread that draws — with a column that has no
      * comparator calling its value function once per comparison on top.
      */
-    val visibleRows: List<T>
+    val filteredRows: List<T>
         get() {
             /*
              * Read before the cache is consulted, and that order is the whole point.
@@ -307,45 +343,84 @@ class DataTableState<T>(
             val currentRows = rows
             val currentFilter = rowFilter
             contentRevision // read for the subscription: forceRedraw drops the cache
-            val currentColumn = sortedColumnId
+            val currentColumnId = sortedColumnId
             val ascending = sortAscending
+            filteredCache?.let { return it }
 
-            sortedCache?.let { return it }
+            val filtered = if (currentFilter != null) currentRows.filter(currentFilter) else currentRows
+            val sorted = sort(filtered, currentColumnId, ascending)
 
-            val filteredRows = if (currentFilter != null) currentRows.filter(currentFilter) else currentRows
+            filteredCache = sorted
-
-            val column = columns.firstOrNull { it.id == currentColumn }
-            val sorted = if (column == null) {
-                filteredRows
-            } else {
-                /*
-                 * The displayed text is read once per row rather than once per
-                 * comparison, and sortedBy is stable, so rows that compare equal keep
-                 * the order they arrived in. Etappe 2 lost that: the JavaFX SortedList
-                 * inserted by binary search and put ties wherever it landed, which made
-                 * rows jump.
-                 */
-                val order = column.comparator
-                    ?: compareBy(filteredRows.associateWith { column.value(it) }::getValue)
-
-                if (ascending) {
-                    filteredRows.sortedWith(order)
-                } else {
-                    filteredRows.sortedWith(order.reversed())
-                }
-            }
-
-            sortedCache = sorted
             return sorted
         }
 
+    /**
+     * Rows drawn by this table. A station selected outside the table can optionally be
+     * included even when the active filter rejects it; [filteredRows] remains the exact
+     * shared filter result used by the map.
+     */
+    val visibleRows: List<T>
+        get() {
+            val currentRows = rows
+            val filtered = filteredRows
+            val revision = selectionRevision
+
+            if (!keepSelectionVisible) {
+                return filtered
+            }
+
+            if (visibleCache != null && cachedSelectionRevision == revision) {
+                return visibleCache.orEmpty()
+            }
+
+            val selected = selectedRow
+            val visible = if (selected == null || filtered.any { keyOf(it) == keyOf(selected) }) {
+                filtered
+            } else if (currentRows.any { keyOf(it) == keyOf(selected) }) {
+                val filteredKeys = filtered.mapTo(HashSet<Any>()) { row -> keyOf(row) }
+                val selectedKey = keyOf(selected)
+                sort(currentRows.filter { row -> keyOf(row) == selectedKey || keyOf(row) in filteredKeys })
+            } else {
+                filtered
+            }
+
+            cachedSelectionRevision = revision
+            visibleCache = visible
+            return visible
+        }
+
+    private fun sort(
+        source: List<T>,
+        columnId: String? = sortedColumnId,
+        ascending: Boolean = sortAscending,
+    ): List<T> {
+        val column = columns.firstOrNull { it.id == columnId } ?: return source
+
+        /*
+         * The displayed text is read once per row rather than once per comparison, and
+         * Kotlin's sort is stable, so equal values keep their source order.
+         */
+        val order = column.comparator
+            ?: compareBy(source.associateWith { column.value(it) }::getValue)
+
+        return if (ascending) source.sortedWith(order) else source.sortedWith(order.reversed())
+    }
+
     private fun invalidateOrder() {
-        sortedCache = null
+        filteredCache = null
+        visibleCache = null
     }
 
     /** The selected row, or null when nothing is selected or it has gone. */
     val selectedRow: T?
-        get() = selectedKey?.let { key -> rows.firstOrNull { rowKey.keyOf(it) == key } }
+        get() = selectionModel?.selected
+            ?: selectedKey?.let { key -> rows.firstOrNull { rowKey.keyOf(it) == key } }
+
+    val selectionRevision: Long
+        get() = selectionModel?.selectionRevision ?: internalSelectionRevision
+
+    val scrollRequestRevision: Long
+        get() = selectionModel?.scrollRequestRevision ?: internalScrollRequestRevision
 
     /**
      * Replaces the rows.
@@ -356,18 +431,43 @@ class DataTableState<T>(
      * neighbour, which would silently point the operator at someone else.
      */
     fun replaceRows(newRows: List<T>) {
+        val selectedIdentity = selectionModel?.selected?.let(rowKey::keyOf) ?: selectedKey
+
         rows = newRows
         rowKey.retainOnly(newRows)
         invalidateOrder()
 
-        val key = selectedKey
+        val replacement = selectedIdentity?.let { key -> newRows.firstOrNull { rowKey.keyOf(it) == key } }
-        if (key != null && newRows.none { rowKey.keyOf(it) == key }) {
+
-            selectedKey = null
+        if (selectionModel != null) {
+            if (selectedIdentity != null) {
+                selectionModel.reconcile(replacement)
+            }
+        } else if (selectedIdentity != null) {
+            selectedKey = replacement?.let(rowKey::keyOf)
+            internalSelectionRevision++
         }
     }
 
     fun select(row: T?) {
-        selectedKey = row?.let(rowKey::keyOf)
+        if (selectionModel != null) {
+            selectionModel.select(row)
+        } else {
+            selectedKey = row?.let(rowKey::keyOf)
+            internalSelectionRevision++
+        }
+        visibleCache = null
+    }
+
+    /** Requests navigation to the current selection without changing it. */
+    fun requestScrollToSelection() {
+        if (selectedRow == null) return
+
+        if (selectionModel != null) {
+            selectionModel.requestScroll()
+        } else {
+            internalScrollRequestRevision++
+        }
     }
 
     /**
@@ -377,7 +477,10 @@ class DataTableState<T>(
      */
     fun keyOf(row: T): Any = rowKey.keyOf(row)
 
-    fun isSelected(row: T): Boolean = selectedKey != null && rowKey.keyOf(row) == selectedKey
+    fun isSelected(row: T): Boolean {
+        val selected = selectedRow ?: return false
+        return rowKey.keyOf(row) == rowKey.keyOf(selected)
+    }
 
     /**
      * Sorts by a column, cycling ascending, descending, unsorted.

app-desktop/src/main/kotlin/kst4contest/view/compose/DataTableView.kt

@@ -1,10 +1,9 @@
 package kst4contest.view.compose
 
 import androidx.compose.foundation.background
+import androidx.compose.foundation.border
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.gestures.detectHorizontalDragGestures
-import androidx.compose.foundation.layout.BoxWithConstraints
-import androidx.compose.ui.unit.Dp
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
@@ -30,6 +29,9 @@ import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.rememberScrollbarAdapter
 import androidx.compose.material3.Surface
 import androidx.compose.ui.input.pointer.PointerIcon
+import androidx.compose.ui.input.pointer.PointerEventType
+import androidx.compose.ui.input.pointer.isSecondaryPressed
+import androidx.compose.ui.input.pointer.onPointerEvent
 import androidx.compose.ui.input.pointer.pointerHoverIcon
 import androidx.compose.ui.text.style.TextOverflow
 import java.awt.Cursor
@@ -44,12 +46,19 @@ import androidx.compose.runtime.remember
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.getValue
 import androidx.compose.ui.Alignment
+import androidx.compose.ui.ExperimentalComposeUiApi
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.input.pointer.pointerInput
+import androidx.compose.ui.layout.LayoutCoordinates
+import androidx.compose.ui.layout.onGloballyPositioned
 import androidx.compose.ui.platform.LocalDensity
 import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.rememberTextMeasurer
 import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.IntOffset
+import kst4contest.view.i18n.LocalStrings
+import kotlin.math.roundToInt
 
 /**
  * A multi-column table.
@@ -71,15 +80,19 @@ import androidx.compose.ui.unit.dp
  * the supported way to reach the hover text the JavaFX cells had, and losing that
  * loses the only way to read a value that does not fit its column.
  */
-@OptIn(ExperimentalFoundationApi::class)
+@OptIn(ExperimentalFoundationApi::class, ExperimentalComposeUiApi::class)
 @Composable
 fun <T> DataTableView(
     state: DataTableState<T>,
     modifier: Modifier = Modifier,
     rowStyle: ((T) -> CellAccent?)? = null,
+    emphasizeCell: ((T, DataColumn<T>) -> Boolean)? = null,
     onRowClick: ((T) -> Unit)? = null,
+    onRowContextMenu: ((T, IntOffset) -> Unit)? = null,
+    selectOnRowClick: Boolean = true,
 ) {
     val density = LocalDensity.current
+    val automaticWidths = rememberAutomaticColumnWidths(state)
 
     val horizontal = rememberScrollState()
     val vertical = rememberLazyListState()
@@ -113,16 +126,36 @@ fun <T> DataTableView(
         }
     }
 
+    var handledScrollRequest by remember(state) { mutableStateOf(0L) }
+    val scrollRequest = state.scrollRequestRevision
+    val displayedRows = state.visibleRows
+
+    /*
+     * Resolve the index only after reading the current filtered and sorted rows. If the
+     * selected row has not arrived yet, leave the request pending and retry when that
+     * list changes. A handled request is never repeated by an ordinary data refresh.
+     */
+    LaunchedEffect(scrollRequest, displayedRows) {
+        if (scrollRequest <= handledScrollRequest) return@LaunchedEffect
+
+        val index = displayedRows.indexOfFirst(state::isSelected)
+        if (index >= 0) {
+            vertical.scrollToItem(index)
+            handledScrollRequest = scrollRequest
+        }
+    }
+
     /*
      * Both directions scroll. The columns of these two tables need about 890dp and
      * 1000dp, and the stored window width starts at 700: without this the last columns
      * are simply unreachable, and so are the handles that would narrow them. The JavaFX
      * tables had a horizontal scrollbar.
      */
-    BoxWithConstraints(modifier = modifier.fillMaxSize()) {
+    Box(
-    val slack = unusedWidth(state, maxWidth)
+        modifier = modifier
-    val lastColumnId = state.orderedColumns.lastOrNull()?.id
+            .fillMaxSize()
-
+            .border(Density.HAIRLINE, MaterialTheme.colorScheme.outline),
+    ) {
     Column(modifier = Modifier.fillMaxSize()) {
         /*
          * A second header row above the first, spanning the columns that share a
@@ -150,9 +183,8 @@ fun <T> DataTableView(
 
                     val width = (index until index + span).sumOf { position ->
                         val column = state.orderedColumns[position]
-                        val stored = state.widthOf(column.id)
+                        effectiveColumnWidthDp(state, column, automaticWidths).toDouble() +
-                        val own = stored ?: (DEFAULT_COLUMN_WIDTH * column.weight).value.toDouble()
+                            Density.COLUMN_HANDLE_WIDTH.value
-                        own + Density.COLUMN_HANDLE_WIDTH.value
                     }
 
                     Box(
@@ -202,7 +234,7 @@ fun <T> DataTableView(
 
                 Box(
                     modifier = Modifier
-                        .columnWidth(state, column, if (column.id == lastColumnId) slack else 0.dp)
+                        .columnWidth(state, column, automaticWidths)
                         .fillMaxHeight()
                         .clickable { state.toggleSort(column.id) }
                         .pointerInput(column.id, index) {
@@ -211,7 +243,7 @@ fun <T> DataTableView(
                                 onDragCancel = { dragged = 0f },
                             ) { _, dragAmount ->
                                 dragged += dragAmount
-                                val step = with(density) { DEFAULT_COLUMN_WIDTH.toPx() } / 2f
+                                val step = with(density) { DEFAULT_COLUMN_WIDTH_DP.dp.toPx() } / 2f
 
                                 if (dragged > step) {
                                     state.moveColumn(column.id, index + 1)
@@ -258,8 +290,11 @@ fun <T> DataTableView(
                                  * and writes that into preferences.xml.
                                  */
                                 val deltaDp = with(density) { dragAmount.toDp().value }
-                                val current = state.widthOf(column.id)
+                                val current = effectiveColumnWidthDp(
-                                    ?: (DEFAULT_COLUMN_WIDTH * column.weight).value.toDouble()
+                                    state,
+                                    column,
+                                    automaticWidths,
+                                ).toDouble()
 
                                 state.resizeColumn(column.id, current + deltaDp)
                             }
@@ -278,7 +313,12 @@ fun <T> DataTableView(
 
         HorizontalDivider(thickness = Density.HAIRLINE)
 
-        Box(modifier = Modifier.weight(1f).fillMaxWidth()) {
+        Box(
+            modifier = Modifier
+                .weight(1f)
+                .fillMaxWidth()
+                .background(MaterialTheme.colorScheme.surface.copy(alpha = 0.45f)),
+        ) {
         LazyColumn(
             state = vertical,
             modifier = Modifier
@@ -291,6 +331,9 @@ fun <T> DataTableView(
                 val accent = rowStyle?.invoke(row)
                 val isEven = index % 2 == 0
                 val _forceRedraw = state.contentRevision
+                var rowCoordinates by remember(state.keyOf(row)) {
+                    mutableStateOf<LayoutCoordinates?>(null)
+                }
 
                 Column(modifier = Modifier.fillMaxWidth()) {
                     Row(
@@ -306,9 +349,25 @@ fun <T> DataTableView(
                                 }
                             )
                             .clickable {
-                                state.select(row)
+                                if (selectOnRowClick) {
+                                    state.select(row)
+                                }
                                 onRowClick?.invoke(row)
                             }
+                            .onGloballyPositioned { rowCoordinates = it }
+                            .onPointerEvent(PointerEventType.Press) { event ->
+                                if (event.buttons.isSecondaryPressed) {
+                                    val local = event.changes.firstOrNull()?.position
+                                    val window = local?.let { rowCoordinates?.localToWindow(it) }
+                                    if (window != null) {
+                                        onRowContextMenu?.invoke(
+                                            row,
+                                            IntOffset(window.x.roundToInt(), window.y.roundToInt()),
+                                        )
+                                        event.changes.forEach { it.consume() }
+                                    }
+                                }
+                            }
                             .heightIn(min = Density.ROW_MIN_HEIGHT),
                         verticalAlignment = Alignment.CenterVertically,
                     ) {
@@ -318,7 +377,7 @@ fun <T> DataTableView(
 
                             Box(
                                 modifier = Modifier
-                                    .columnWidth(state, column, if (column.id == lastColumnId) slack else 0.dp)
+                                    .columnWidth(state, column, automaticWidths)
                                     .fillMaxHeight()
                                     .background(cell?.background ?: Color.Transparent)
                                     .padding(horizontal = 4.dp, vertical = 2.dp),
@@ -345,6 +404,11 @@ fun <T> DataTableView(
                                     Text(
                                         value,
                                         style = MaterialTheme.typography.bodyMedium,
+                                        fontWeight = if (emphasizeCell?.invoke(row, column) == true) {
+                                            FontWeight.Bold
+                                        } else {
+                                            null
+                                        },
                                         maxLines = 1,
                                         overflow = TextOverflow.Ellipsis,
                                         color = cell?.foreground
@@ -378,6 +442,15 @@ fun <T> DataTableView(
             }
         }
 
+            if (state.visibleRows.isEmpty()) {
+                Text(
+                    text = LocalStrings.current.tableEmpty,
+                    modifier = Modifier.align(Alignment.Center).padding(8.dp),
+                    style = MaterialTheme.typography.bodyMedium,
+                    color = MaterialTheme.colorScheme.outline,
+                )
+            }
+
             VerticalScrollbar(
                 adapter = rememberScrollbarAdapter(vertical),
                 modifier = Modifier.align(Alignment.CenterEnd).fillMaxHeight(),
@@ -402,39 +475,71 @@ fun <T> DataTableView(
 }
 
 
-/**
+/** A stored width wins over the measured automatic width, even when it is narrower. */
- * A stored width when the operator has sized this column, otherwise the column's own
- * weight. The stored value wins because it is the operator's decision.
- *
- * @param extra added to the last column so the table fills the window instead of
- *        leaving a band of empty background to the right. The JavaFX table did the
- *        same through `flexibleInitialWidth`.
- */
 @Composable
 private fun <T> Modifier.columnWidth(
     state: DataTableState<T>,
     column: DataColumn<T>,
-    extra: Dp = 0.dp,
+    automaticWidths: Map<String, Float>,
 ): Modifier {
-    val stored = state.widthOf(column.id)
+    return this.width(effectiveColumnWidthDp(state, column, automaticWidths).dp)
-    val own = if (stored != null) stored.dp else DEFAULT_COLUMN_WIDTH * column.weight
-
-    return this.width(own + extra)
 }
 
 /**
- * How much is left over once every column has its width. Zero when the columns are
+ * Measures automatic columns once from their headers and once more when the first
- * already wider than the window, in which case the table scrolls.
+ * source rows arrive. Later chat events do not resize a live table.
  */
 @Composable
-private fun <T> unusedWidth(state: DataTableState<T>, available: Dp): Dp {
+private fun <T> rememberAutomaticColumnWidths(state: DataTableState<T>): Map<String, Float> {
-    val used = state.orderedColumns.sumOf { column ->
+    val density = LocalDensity.current
-        val stored = state.widthOf(column.id)
+    val measurer = rememberTextMeasurer()
-        val own = if (stored != null) stored else (DEFAULT_COLUMN_WIDTH * column.weight).value.toDouble()
+    val headerStyle = MaterialTheme.typography.bodyMedium.copy(fontWeight = FontWeight.Bold)
-        own + Density.COLUMN_HANDLE_WIDTH.value
+    val cellStyle = MaterialTheme.typography.bodyMedium
-    }
+    val hasSourceRows = state.rows.isNotEmpty()
+    val titles = state.orderedColumns.associate { column -> column.id to column.title() }
 
-    return (available.value - used).coerceAtLeast(0.0).dp
+    return remember(
+        state,
+        density.density,
+        density.fontScale,
+        headerStyle,
+        cellStyle,
+        titles,
+        hasSourceRows,
+    ) {
+        val sample = if (hasSourceRows) state.rows.take(AUTO_WIDTH_SAMPLE_SIZE) else emptyList()
+
+        state.orderedColumns.associate { column ->
+            val title = titles.getValue(column.id) + SORT_INDICATOR_SAMPLE
+            val headerWidthPx = measurer.measure(title, headerStyle).size.width
+            val contentWidthPx = sample.maxOfOrNull { row ->
+                val value = runCatching { column.value(row) }.getOrDefault("")
+                measurer.measure(value, cellStyle).size.width
+            } ?: 0
+            val measuredDp = with(density) {
+                maxOf(headerWidthPx, contentWidthPx).toDp().value + CELL_HORIZONTAL_PADDING_DP
+            }
+            val maximumDp = (AUTO_WIDTH_MAX_BASE_DP * column.weight.coerceAtLeast(0.5f))
+                .coerceIn(AUTO_WIDTH_MIN_MAX_DP, AUTO_WIDTH_ABSOLUTE_MAX_DP)
+
+            column.id to measuredDp.coerceIn(AUTO_WIDTH_MIN_DP, maximumDp)
+        }
+    }
 }
 
-private val DEFAULT_COLUMN_WIDTH = 85.dp
+internal fun <T> effectiveColumnWidthDp(
+    state: DataTableState<T>,
+    column: DataColumn<T>,
+    automaticWidths: Map<String, Float>,
+): Float = state.widthOf(column.id)?.toFloat()
+    ?: automaticWidths[column.id]
+    ?: DEFAULT_COLUMN_WIDTH_DP * column.weight
+
+private const val AUTO_WIDTH_SAMPLE_SIZE = 160
+private const val AUTO_WIDTH_MIN_DP = 32f
+private const val AUTO_WIDTH_MIN_MAX_DP = 90f
+private const val AUTO_WIDTH_MAX_BASE_DP = 180f
+private const val AUTO_WIDTH_ABSOLUTE_MAX_DP = 360f
+private const val CELL_HORIZONTAL_PADDING_DP = 10f
+private const val DEFAULT_COLUMN_WIDTH_DP = 85f
+private const val SORT_INDICATOR_SAMPLE = " ▲"

app-desktop/src/main/kotlin/kst4contest/view/compose/Density.kt

@@ -13,27 +13,36 @@ import androidx.compose.ui.unit.dp
  * over thirty fields, so those defaults turn a settings window into a scrolling
  * exercise and make a desktop application look like a phone.
  *
- * Every height here is a **minimum**, never a fixed size. The configured base font
+ * Interactive controls share one minimum visible height. Their common font and padding
- * size scales all text through Typography.scaledTo, and a fixed height would clip a
+ * keep the standard size exact while still allowing a larger configured font to grow.
- * larger font instead of growing with it.
  */
 internal object Density {
 
-    /** Text fields, pickers and anything else on the field column. */
+    /** Minimum for buttons, text fields, choices and checkbox rows in the desktop UI. */
-    val FIELD_MIN_HEIGHT = 30.dp
+    val CONTROL_HEIGHT = 26.dp
 
-    /** Inside a text field. The vertical value is what buys back the 56dp. */
+    /** Text stays vertically centred by the control instead of by extra padding. */
-    val FIELD_CONTENT_PADDING = PaddingValues(horizontal = 8.dp, vertical = 2.dp)
+    val FIELD_CONTENT_PADDING = PaddingValues(horizontal = 6.dp, vertical = 0.dp)
 
-    val BUTTON_MIN_HEIGHT = 24.dp
+    val BUTTON_CONTENT_PADDING = PaddingValues(horizontal = 6.dp, vertical = 0.dp)
-
-    val BUTTON_CONTENT_PADDING = PaddingValues(horizontal = 8.dp, vertical = 1.dp)
 
     /** Square-ish, not a pill: the pill shape is the strongest mobile tell. */
     val BUTTON_SHAPE = RoundedCornerShape(4.dp)
 
     /** One row of a list or table. */
-    val ROW_MIN_HEIGHT = 26.dp
+    val ROW_MIN_HEIGHT = CONTROL_HEIGHT
+
+    /** Equal width for all eight compass-direction filter buttons. */
+    val DIRECTION_BUTTON_WIDTH = 28.dp
+
+    /** Two-letter compass labels need only a small inset inside their fixed width. */
+    val DIRECTION_BUTTON_HORIZONTAL_PADDING = 2.dp
+
+    /** Enough room for the NOT-QRV and sked groups to remain usable side by side. */
+    val SELECTED_ACTION_GROUPS_ROW_MIN_WIDTH = 450.dp
+
+    /** Keeps the station actions usable when a stored splitter position is too low. */
+    val SELECTED_ACTION_AREA_MIN_HEIGHT = 160.dp
 
     val TAB_MIN_HEIGHT = 30.dp
 
@@ -55,6 +64,9 @@ internal object Density {
     /** Between buttons in a row. */
     val BUTTON_GAP = 6.dp
 
+    /** Compact inset for a visually grouped settings section. */
+    val GROUP_CONTENT_PADDING = PaddingValues(horizontal = 8.dp, vertical = 6.dp)
+
     /** Around a selected row, and the hairline between rows. */
     val SELECTION_BORDER = 1.5.dp
 

app-desktop/src/main/kotlin/kst4contest/view/compose/FormControls.kt

@@ -6,6 +6,7 @@ import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.ExperimentalLayoutApi
 import androidx.compose.foundation.layout.FlowRow
 import androidx.compose.foundation.layout.FlowRowScope
+import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxWidth
@@ -17,7 +18,11 @@ import androidx.compose.foundation.text.BasicTextField
 import androidx.compose.foundation.BorderStroke
 import androidx.compose.foundation.background
 import androidx.compose.foundation.interaction.collectIsHoveredAsState
+import androidx.compose.foundation.interaction.collectIsFocusedAsState
 import androidx.compose.foundation.interaction.collectIsPressedAsState
+import androidx.compose.foundation.border
+import androidx.compose.foundation.selection.selectable
+import androidx.compose.foundation.selection.toggleable
 import androidx.compose.ui.graphics.Brush
 import androidx.compose.material3.Button
 import androidx.compose.material3.ButtonDefaults
@@ -43,17 +48,29 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.focus.onFocusChanged
+import androidx.compose.ui.draw.drawBehind
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.geometry.Size
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.graphics.luminance
 import androidx.compose.ui.input.key.Key
 import androidx.compose.ui.input.key.KeyEventType
 import androidx.compose.ui.input.key.key
 import androidx.compose.ui.input.key.onKeyEvent
 import androidx.compose.ui.input.key.type
+import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.input.PasswordVisualTransformation
 import androidx.compose.ui.text.input.VisualTransformation
 import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.TextUnit
 import androidx.compose.ui.unit.dp
+import androidx.compose.ui.semantics.Role
+
+/** One font size and natural line box for every compact interactive control. */
+@Composable
+internal fun compactControlTextStyle(): TextStyle =
+    MaterialTheme.typography.bodyMedium.copy(lineHeight = TextUnit.Unspecified)
 
 /**
  * Form controls shared by the settings tabs.
@@ -232,6 +249,7 @@ object Form {
         val draft = rememberDraft(selected)
 
         labelled(label) {
+            CompositionLocalProvider(LocalMinimumInteractiveComponentSize provides 0.dp) {
             Box {
                 OutlinedButton(
                     onClick = { expanded = true },
@@ -240,18 +258,20 @@ object Form {
                     contentPadding = Density.FIELD_CONTENT_PADDING,
                     modifier = Modifier
                         .fillMaxWidth()
-                        .heightIn(min = Density.FIELD_MIN_HEIGHT),
+                        .heightIn(min = Density.CONTROL_HEIGHT),
                 ) {
                     Text(
                         draft.value?.let(describe) ?: kst4contest.view.i18n.LocalStrings.current.formNotSelected,
-                        style = MaterialTheme.typography.bodyMedium,
+                        style = compactControlTextStyle(),
                         modifier = Modifier.fillMaxWidth(),
                     )
                 }
                 DropdownMenu(expanded = expanded, onDismissRequest = { expanded = false }) {
                     items.forEach { item ->
                         DropdownMenuItem(
-                            text = { Text(describe(item), style = MaterialTheme.typography.bodyMedium) },
+                            text = { Text(describe(item), style = compactControlTextStyle()) },
+                            contentPadding = Density.FIELD_CONTENT_PADDING,
+                            modifier = Modifier.heightIn(min = Density.CONTROL_HEIGHT),
                             onClick = {
                                 expanded = false
                                 draft.value = item
@@ -261,6 +281,7 @@ object Form {
                     }
                 }
             }
+            }
         }
     }
 
@@ -271,30 +292,39 @@ object Form {
         selected: T?,
         describe: (T) -> String,
         enabled: Boolean = true,
+        trailingText: String = "",
         onSelect: (T) -> Unit,
     ) {
         var expanded by remember { mutableStateOf(false) }
         val draft = rememberDraft(selected)
 
-        Row(verticalAlignment = Alignment.CenterVertically) {
+        Row(
-            Text(label, style = MaterialTheme.typography.bodyMedium, modifier = Modifier.padding(end = 8.dp))
+            verticalAlignment = Alignment.CenterVertically,
+            modifier = Modifier.heightIn(min = Density.CONTROL_HEIGHT),
+        ) {
+            if (label.isNotBlank()) {
+                Text(label, style = compactControlTextStyle(), modifier = Modifier.padding(end = 4.dp))
+            }
+            CompositionLocalProvider(LocalMinimumInteractiveComponentSize provides 0.dp) {
             Box {
                 OutlinedButton(
                     onClick = { expanded = true },
                     enabled = enabled,
                     shape = Density.BUTTON_SHAPE,
                     contentPadding = Density.FIELD_CONTENT_PADDING,
-                    modifier = Modifier.heightIn(min = Density.FIELD_MIN_HEIGHT),
+                    modifier = Modifier.heightIn(min = Density.CONTROL_HEIGHT),
                 ) {
                     Text(
                         draft.value?.let(describe) ?: kst4contest.view.i18n.LocalStrings.current.formNotSelected,
-                        style = MaterialTheme.typography.bodyMedium,
+                        style = compactControlTextStyle(),
                     )
                 }
                 DropdownMenu(expanded = expanded, onDismissRequest = { expanded = false }) {
                     items.forEach { item ->
                         DropdownMenuItem(
-                            text = { Text(describe(item), style = MaterialTheme.typography.bodyMedium) },
+                            text = { Text(describe(item), style = compactControlTextStyle()) },
+                            contentPadding = Density.FIELD_CONTENT_PADDING,
+                            modifier = Modifier.heightIn(min = Density.CONTROL_HEIGHT),
                             onClick = {
                                 expanded = false
                                 draft.value = item
@@ -304,32 +334,81 @@ object Form {
                     }
                 }
             }
+            }
+            if (trailingText.isNotBlank()) {
+                Text(
+                    trailingText,
+                    style = compactControlTextStyle(),
+                    modifier = Modifier.padding(start = 4.dp),
+                )
+            }
         }
     }
 
     @Composable
-    fun check(label: String, value: Boolean, onChange: (Boolean) -> Unit) {
+    fun check(
+        label: String,
+        value: Boolean,
+        enabled: Boolean = true,
+        onChange: (Boolean) -> Unit,
+    ) {
         val draft = rememberDraft(value)
 
         Row(
             verticalAlignment = Alignment.CenterVertically,
-            modifier = Modifier.heightIn(min = Density.ROW_MIN_HEIGHT),
+            modifier = Modifier.heightIn(min = Density.CONTROL_HEIGHT),
         ) {
-            CompactCheckbox(draft.value) { ticked ->
+            CompactCheckbox(draft.value, enabled = enabled) { ticked ->
                 draft.value = ticked
                 onChange(ticked)
             }
-            Text(label, modifier = Modifier.padding(start = 6.dp))
+            Text(
+                label,
+                color = if (enabled) {
+                    MaterialTheme.colorScheme.onSurface
+                } else {
+                    MaterialTheme.colorScheme.onSurface.copy(alpha = 0.38f)
+                },
+                style = compactControlTextStyle(),
+                modifier = Modifier.padding(start = 4.dp),
+            )
         }
     }
 
+    /** A compact two-state button for dense desktop option groups. */
+    @Composable
+    fun toggle(
+        text: String,
+        checked: Boolean,
+        enabled: Boolean = true,
+        modifier: Modifier = Modifier,
+        onCheckedChange: (Boolean) -> Unit,
+    ) {
+        CompactToggleButton(
+            text = text,
+            checked = checked,
+            enabled = enabled,
+            modifier = modifier,
+            onCheckedChange = onCheckedChange,
+        )
+    }
+
     @Composable
     fun int(label: String, value: Int, onChange: (Int) -> Unit) =
         number(label, value, { it.trim().toIntOrNull() }, onChange)
 
     @Composable
-    fun decimal(label: String, value: Double, onChange: (Double) -> Unit) =
+    fun decimal(
-        number(label, value, { it.trim().replace(',', '.').toDoubleOrNull() }, onChange)
+        label: String,
+        value: Double,
+        isValid: (Double) -> Boolean = { true },
+        onChange: (Double) -> Unit,
+    ) = number(
+        label,
+        value,
+        { text -> text.trim().replace(',', '.').toDoubleOrNull()?.takeIf(isValid) },
+        onChange,
+    )
 
     /**
      * The number field behind [int] and [decimal].
@@ -401,6 +480,30 @@ object Form {
         }
     }
 
+    /** A compact settings group that needs stronger separation than a labelled divider. */
+    @Composable
+    fun panelSection(title: String, content: @Composable () -> Unit) {
+        Column(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(top = 10.dp)
+                .background(
+                    color = MaterialTheme.colorScheme.surfaceVariant.copy(alpha = 0.55f),
+                    shape = Density.BUTTON_SHAPE,
+                )
+                .border(
+                    width = Density.HAIRLINE,
+                    color = MaterialTheme.colorScheme.outlineVariant,
+                    shape = Density.BUTTON_SHAPE,
+                )
+                .padding(Density.GROUP_CONTENT_PADDING),
+            verticalArrangement = Arrangement.spacedBy(Density.FIELD_GAP),
+        ) {
+            Text(title, style = MaterialTheme.typography.titleSmall)
+            content()
+        }
+    }
+
     /**
      * A section whose controls flow across the width instead of stacking.
      *
@@ -430,26 +533,49 @@ object Form {
     }
 
     /**
-     * The button of the settings windows: square-ish corners and desktop padding.
+     * The shared desktop button used in settings, filter and shortcut areas.
-     *
-     * Material's own Button is a 40dp pill, which is the single strongest reason the
-     * window looked like a phone application.
-     */
-    /**
-     * The button of the settings windows.
      *
      * Material's own Button is a 40dp pill; this one is square-ish and at desktop
      * height. It also carries the two states the JavaFX stylesheets give every button:
      * a gradient while the pointer is over it and a red border while it is held down.
      */
     @Composable
-    fun button(text: String, enabled: Boolean = true, onClick: () -> Unit) {
+    fun button(
+        text: String,
+        enabled: Boolean = true,
+        accented: Boolean = false,
+        selected: Boolean = false,
+        modifier: Modifier = Modifier,
+        horizontalPadding: Dp = 6.dp,
+        onClick: () -> Unit,
+    ) {
         val palette = LocalJavaFxPalette.current
         val interactions = remember { MutableInteractionSource() }
         val hovered by interactions.collectIsHoveredAsState()
         val pressed by interactions.collectIsPressedAsState()
-
         val hoverGradient = palette.buttonHoverGradient
+        val accentGradient = if (palette.windowBackground.luminance() < 0.5f) {
+            listOf(Color(0xFF008000), Color(0xFF90EE90))
+        } else {
+            listOf(Color(0xFF00FFFF), Color(0xFFFF99FF))
+        }
+        val backgroundGradient = when {
+            !enabled -> emptyList()
+            hovered && hoverGradient.size >= 2 -> hoverGradient
+            accented -> accentGradient
+            else -> emptyList()
+        }
+        val containerColor = when {
+            backgroundGradient.isNotEmpty() -> Color.Transparent
+            selected -> MaterialTheme.colorScheme.primary
+            else -> MaterialTheme.colorScheme.surfaceVariant
+        }
+        val contentColor = when {
+            hovered && enabled && hoverGradient.isNotEmpty() -> Color.Black
+            accented -> Color(0xFF395306)
+            selected -> MaterialTheme.colorScheme.onPrimary
+            else -> MaterialTheme.colorScheme.onSurfaceVariant
+        }
 
         CompositionLocalProvider(
             LocalMinimumInteractiveComponentSize provides 0.dp
@@ -458,35 +584,28 @@ object Form {
             onClick = onClick,
             enabled = enabled,
             shape = Density.BUTTON_SHAPE,
-            contentPadding = Density.BUTTON_CONTENT_PADDING,
+            contentPadding = PaddingValues(horizontal = horizontalPadding, vertical = 0.dp),
             interactionSource = interactions,
-            border = if (pressed) {
+            border = when {
-                BorderStroke(Density.SELECTION_BORDER, palette.buttonPressedBorder)
+                pressed -> BorderStroke(Density.SELECTION_BORDER, palette.buttonPressedBorder)
-            } else {
+                enabled -> BorderStroke(Density.HAIRLINE, MaterialTheme.colorScheme.outline)
-                null
+                else -> BorderStroke(
-            },
+                    Density.HAIRLINE,
-            colors = if (hovered && enabled && hoverGradient.isNotEmpty()) {
+                    MaterialTheme.colorScheme.outline.copy(alpha = 0.38f),
-                /*
-                 * Compose paints a solid container, so the gradient is applied as the
-                 * background below and the container itself is cleared. The text turns
-                 * dark because the gradient the sheets use is a bright lime.
-                 */
-                ButtonDefaults.buttonColors(
-                    containerColor = Color.Transparent,
-                    contentColor = Color.Black,
-                )
-            } else {
-                ButtonDefaults.buttonColors(
-                    containerColor = MaterialTheme.colorScheme.surfaceVariant,
-                    contentColor = MaterialTheme.colorScheme.onSurfaceVariant,
                 )
             },
-            modifier = Modifier
+            colors = ButtonDefaults.buttonColors(
-                .heightIn(min = Density.BUTTON_MIN_HEIGHT)
+                containerColor = containerColor,
+                contentColor = contentColor,
+                disabledContainerColor = MaterialTheme.colorScheme.surfaceVariant.copy(alpha = 0.38f),
+                disabledContentColor = MaterialTheme.colorScheme.onSurfaceVariant.copy(alpha = 0.38f),
+            ),
+            modifier = modifier
+                .heightIn(min = Density.CONTROL_HEIGHT)
                 .then(
-                    if (hovered && enabled && hoverGradient.size >= 2) {
+                    if (backgroundGradient.size >= 2) {
                         Modifier.background(
-                            brush = Brush.verticalGradient(hoverGradient),
+                            brush = Brush.verticalGradient(backgroundGradient),
                             shape = Density.BUTTON_SHAPE,
                         )
                     } else {
@@ -499,7 +618,11 @@ object Form {
              * bar instead of simply being too narrow, and that bar then pushes the rest
              * of the window out of view.
              */
-            Text(text, style = MaterialTheme.typography.bodyMedium, maxLines = 1)
+            Text(
+                text,
+                style = compactControlTextStyle(),
+                maxLines = 1,
+            )
         }
         }
     }
@@ -538,6 +661,138 @@ object Form {
     }
 }
 
+/**
+ * A content-sized toggle with the same typography, height and palette as the shared
+ * desktop buttons. Checkbox semantics keep keyboard and accessibility behaviour while
+ * avoiding the extra symbol and label width of a checkbox row.
+ */
+@Composable
+internal fun CompactToggleButton(
+    text: String,
+    checked: Boolean,
+    enabled: Boolean = true,
+    modifier: Modifier = Modifier,
+    onCheckedChange: (Boolean) -> Unit,
+) {
+    val interactions = remember { MutableInteractionSource() }
+    val hovered by interactions.collectIsHoveredAsState()
+    val focused by interactions.collectIsFocusedAsState()
+    val pressed by interactions.collectIsPressedAsState()
+    val containerColor = when {
+        !enabled -> MaterialTheme.colorScheme.surfaceVariant.copy(alpha = 0.38f)
+        pressed -> MaterialTheme.colorScheme.primaryContainer
+        hovered && checked -> MaterialTheme.colorScheme.primaryContainer
+        checked -> MaterialTheme.colorScheme.primary
+        hovered || focused -> MaterialTheme.colorScheme.secondaryContainer.copy(alpha = 0.72f)
+        else -> MaterialTheme.colorScheme.surfaceVariant
+    }
+
+    val contentColor = when {
+        !enabled -> MaterialTheme.colorScheme.onSurfaceVariant.copy(alpha = 0.38f)
+        (pressed || hovered) && checked -> MaterialTheme.colorScheme.onPrimaryContainer
+        checked -> MaterialTheme.colorScheme.onPrimary
+        else -> MaterialTheme.colorScheme.onSurfaceVariant
+    }
+    val outlineColor = when {
+        focused || checked -> MaterialTheme.colorScheme.primary
+        enabled -> MaterialTheme.colorScheme.outline
+        else -> MaterialTheme.colorScheme.outline.copy(alpha = 0.38f)
+    }
+
+    Box(
+        modifier = modifier
+            .heightIn(min = Density.CONTROL_HEIGHT)
+            .background(containerColor, Density.BUTTON_SHAPE)
+            .border(
+                if (focused) Density.SELECTION_BORDER else Density.HAIRLINE,
+                outlineColor,
+                Density.BUTTON_SHAPE,
+            )
+            .toggleable(
+                value = checked,
+                enabled = enabled,
+                role = Role.Checkbox,
+                interactionSource = interactions,
+                indication = null,
+                onValueChange = onCheckedChange,
+            )
+            .padding(horizontal = 6.dp),
+        contentAlignment = Alignment.Center,
+    ) {
+        Text(
+            text = text,
+            style = compactControlTextStyle(),
+            color = contentColor,
+            maxLines = 1,
+        )
+    }
+}
+
+/**
+ * A compact desktop tab with the same interaction palette as the shared controls.
+ * The selected surface visually continues into the content below it, while the border
+ * keeps inactive entries recognizable as tabs in both palettes.
+ */
+@Composable
+internal fun CompactTab(
+    text: String,
+    selected: Boolean,
+    modifier: Modifier = Modifier,
+    onClick: () -> Unit,
+) {
+    val interactions = remember { MutableInteractionSource() }
+    val hovered by interactions.collectIsHoveredAsState()
+    val focused by interactions.collectIsFocusedAsState()
+    val pressed by interactions.collectIsPressedAsState()
+    val primary = MaterialTheme.colorScheme.primary
+    val background = when {
+        pressed -> MaterialTheme.colorScheme.primaryContainer
+        selected -> MaterialTheme.colorScheme.surface
+        hovered || focused -> MaterialTheme.colorScheme.secondaryContainer.copy(alpha = 0.72f)
+        else -> MaterialTheme.colorScheme.surfaceVariant
+    }
+    val outline = when {
+        selected || focused -> primary
+        else -> MaterialTheme.colorScheme.outlineVariant
+    }
+
+    Box(
+        modifier = modifier
+            .heightIn(min = Density.TAB_MIN_HEIGHT)
+            .background(background)
+            .border(
+                if (focused) Density.SELECTION_BORDER else Density.HAIRLINE,
+                outline,
+            )
+            .selectable(
+                selected = selected,
+                interactionSource = interactions,
+                indication = null,
+                role = Role.Tab,
+                onClick = onClick,
+            )
+            .drawBehind {
+                if (selected) {
+                    val thickness = 2.dp.toPx()
+                    drawRect(
+                        color = primary,
+                        topLeft = Offset(0f, size.height - thickness),
+                        size = Size(size.width, thickness),
+                    )
+                }
+            }
+            .padding(horizontal = Density.TAB_HORIZONTAL_PADDING, vertical = 3.dp),
+        contentAlignment = Alignment.Center,
+    ) {
+        Text(
+            text,
+            style = compactControlTextStyle(),
+            color = if (selected) primary else MaterialTheme.colorScheme.onSurfaceVariant,
+            maxLines = 1,
+        )
+    }
+}
+
 /**
  * A text field at desktop density.
  *
@@ -563,6 +818,7 @@ internal fun CompactTextField(
     modifier: Modifier = Modifier,
     enabled: Boolean = true,
     isError: Boolean = false,
+    placeholder: String = "",
     visualTransformation: VisualTransformation = VisualTransformation.None,
     borderColor: Color? = null,
     borderThickness: Dp? = null,
@@ -596,11 +852,11 @@ internal fun CompactTextField(
         onValueChange = onValueChange,
         enabled = enabled,
         singleLine = true,
-        textStyle = MaterialTheme.typography.bodyMedium.copy(color = textColor),
+        textStyle = compactControlTextStyle().copy(color = textColor),
         cursorBrush = SolidColor(MaterialTheme.colorScheme.primary),
         visualTransformation = visualTransformation,
         interactionSource = interactionSource,
-        modifier = modifier.heightIn(min = Density.FIELD_MIN_HEIGHT),
+        modifier = modifier.heightIn(min = Density.CONTROL_HEIGHT),
     ) { innerTextField ->
         OutlinedTextFieldDefaults.DecorationBox(
             value = value,
@@ -612,6 +868,19 @@ internal fun CompactTextField(
             isError = isError,
             colors = colors,
             contentPadding = Density.FIELD_CONTENT_PADDING,
+            placeholder = if (placeholder.isNotEmpty()) {
+                {
+                    Text(
+                        placeholder,
+                        style = compactControlTextStyle().copy(
+                            color = MaterialTheme.colorScheme.onSurfaceVariant,
+                        ),
+                        maxLines = 1,
+                    )
+                }
+            } else {
+                null
+            },
             container = {
                 OutlinedTextFieldDefaults.Container(
                     enabled = enabled,
@@ -628,16 +897,21 @@ internal fun CompactTextField(
 }
 
 /**
- * A checkbox without the 48dp touch target Material reserves around it. On a desktop
+ * A checkbox on the shared compact control surface instead of Material's 48dp touch target.
- * form that target is dead space between every two rows.
  */
 @Composable
-internal fun CompactCheckbox(checked: Boolean, onCheckedChange: (Boolean) -> Unit) {
+internal fun CompactCheckbox(
-    CompositionLocalProvider(LocalMinimumInteractiveComponentSize provides Dp.Unspecified) {
+    checked: Boolean,
+    modifier: Modifier = Modifier,
+    enabled: Boolean = true,
+    onCheckedChange: (Boolean) -> Unit,
+) {
+    CompositionLocalProvider(LocalMinimumInteractiveComponentSize provides 0.dp) {
         Checkbox(
             checked = checked,
+            enabled = enabled,
             onCheckedChange = onCheckedChange,
-            modifier = Modifier.size(Density.CHECK_SIZE),
+            modifier = modifier.size(Density.CONTROL_HEIGHT),
         )
     }
 }

app-desktop/src/main/kotlin/kst4contest/view/compose/MainMenuBar.kt

@@ -6,14 +6,20 @@ import androidx.compose.foundation.hoverable
 import androidx.compose.foundation.interaction.MutableInteractionSource
 import androidx.compose.foundation.interaction.collectIsHoveredAsState
 import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.IntrinsicSize
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.heightIn
 import androidx.compose.foundation.layout.padding
-import androidx.compose.material3.DropdownMenu
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
 import androidx.compose.material3.DropdownMenuItem
 import androidx.compose.material3.HorizontalDivider
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.MenuDefaults
+import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
@@ -21,8 +27,16 @@ import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.unit.IntOffset
+import androidx.compose.ui.unit.IntRect
+import androidx.compose.ui.unit.IntSize
+import androidx.compose.ui.unit.LayoutDirection
+import androidx.compose.ui.unit.dp
 import androidx.compose.ui.window.FrameWindowScope
 import androidx.compose.ui.window.MenuBar
+import androidx.compose.ui.window.Popup
+import androidx.compose.ui.window.PopupPositionProvider
+import androidx.compose.ui.window.PopupProperties
 import kst4contest.controller.On4KstConnectionState
 import kst4contest.utils.PlatformUtils
 import kst4contest.view.i18n.LocalStrings
@@ -163,7 +177,14 @@ private fun MenuTitle(menu: MenuSpec, rowState: MainMenuRowState) {
     val hovered by interactions.collectIsHoveredAsState()
     val open = rowState.openMenu == menu.title
 
-    Box {
+    /*
+     * Full bar height, so the popup anchored to this box starts at the bar's bottom edge
+     * rather than at the centred title text a few pixels above it.
+     */
+    Box(
+        modifier = Modifier.heightIn(min = Density.TAB_MIN_HEIGHT),
+        contentAlignment = Alignment.Center,
+    ) {
         Text(
             text = menu.title,
             style = MaterialTheme.typography.bodyMedium,
@@ -195,29 +216,90 @@ private fun MenuTitle(menu: MenuSpec, rowState: MainMenuRowState) {
                 ),
         )
 
-        DropdownMenu(expanded = open, onDismissRequest = rowState::close) {
+        /*
-            menu.entries.forEach { entry ->
+         * A hand-rolled stand-in for Material3's DropdownMenu, because that one cannot open
-                when (entry) {
+         * flush under a menu bar — see MenuRowPopupPositionProvider. Same dismissal (outside
-                    is MenuEntry.Item -> DropdownMenuItem(
+         * click and Escape come with a focusable popup), same MenuDefaults look; only the
-                        text = {
+         * expand animation is gone, which a menu bar does not have anyway.
-                            Text(entry.label, style = MaterialTheme.typography.bodyMedium)
+         */
-                        },
+        if (open) {
-                        enabled = entry.enabled,
+            Popup(
-                        onClick = { rowState.pick(entry.onClick) },
+                popupPositionProvider = MenuRowPopupPositionProvider,
-                    )
+                onDismissRequest = rowState::close,
+                properties = PopupProperties(focusable = true),
+            ) {
+                Surface(
+                    shape = MenuDefaults.shape,
+                    color = MenuDefaults.containerColor,
+                    tonalElevation = MenuDefaults.TonalElevation,
+                    shadowElevation = MenuDefaults.ShadowElevation,
+                ) {
+                    Column(
+                        modifier = Modifier
+                            .padding(vertical = MENU_POPUP_VERTICAL_PADDING)
+                            .width(IntrinsicSize.Max)
+                            .verticalScroll(rememberScrollState()),
+                    ) {
+                        menu.entries.forEach { entry ->
+                            when (entry) {
+                                is MenuEntry.Item -> DropdownMenuItem(
+                                    text = {
+                                        Text(entry.label, style = MaterialTheme.typography.bodyMedium)
+                                    },
+                                    enabled = entry.enabled,
+                                    onClick = { rowState.pick(entry.onClick) },
+                                )
 
-                    MenuEntry.Separator ->
+                                MenuEntry.Separator ->
-                        HorizontalDivider(
+                                    HorizontalDivider(
-                            thickness = Density.HAIRLINE,
+                                        thickness = Density.HAIRLINE,
-                            color = palette.separatorLine,
+                                        color = palette.separatorLine,
-                        )
+                                    )
+                            }
+                        }
+                    }
                 }
             }
         }
     }
 }
 
+/**
+ * Places a menu-bar menu: flush under its anchor, leading edges aligned.
+ *
+ * Material3's DropdownMenu cannot be told to do this. Its position provider refuses any
+ * position closer than 48 dp (`MenuVerticalMargin`) to the window's top edge, and a menu
+ * bar sits exactly there, so every menu opened pushed down to that margin — a visible gap
+ * below the bar. The margin is applied after the `offset` parameter and the provider is
+ * not replaceable, hence this one and the hand-rolled popup in [MenuTitle].
+ */
+internal object MenuRowPopupPositionProvider : PopupPositionProvider {
+    override fun calculatePosition(
+        anchorBounds: IntRect,
+        windowSize: IntSize,
+        layoutDirection: LayoutDirection,
+        popupContentSize: IntSize,
+    ): IntOffset {
+        val preferredX = when (layoutDirection) {
+            LayoutDirection.Ltr -> anchorBounds.left
+            LayoutDirection.Rtl -> anchorBounds.right - popupContentSize.width
+        }
+        val x = preferredX.coerceIn(0, maxOf(0, windowSize.width - popupContentSize.width))
+        val below = anchorBounds.bottom
+        val above = anchorBounds.top - popupContentSize.height
+        val y = when {
+            below + popupContentSize.height <= windowSize.height -> below
+            above >= 0 -> above
+            else -> maxOf(0, windowSize.height - popupContentSize.height)
+        }
+        return IntOffset(x, y)
+    }
+}
+
 /** Enough tint to show the pointer is over a title, not enough to read as a selection. */
 private const val HOVER_ALPHA = 0.35f
 
 private val MENU_TITLE_VERTICAL_PADDING = androidx.compose.ui.unit.Dp(4f)
+
+/** Material3's DropdownMenuVerticalPadding, which is internal; keep the menus looking alike. */
+private val MENU_POPUP_VERTICAL_PADDING = 8.dp

app-desktop/src/main/kotlin/kst4contest/view/compose/MainWindow.kt

@@ -9,8 +9,8 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.input.key.onPreviewKeyEvent
+import androidx.compose.ui.unit.dp
 import androidx.compose.ui.window.FrameWindowScope
-import kst4contest.model.Band
 import kst4contest.model.ChatMember
 import kst4contest.model.ChatMessage
 import kst4contest.utils.PlatformUtils
@@ -31,7 +31,6 @@ import java.util.function.Consumer
 fun FrameWindowScope.MainWindow(
     state: MainWindowState,
     actions: MainMenuActions,
-    skedBands: List<Band>,
     openInBrowser: Consumer<String>,
     onShowOnMap: () -> Unit,
     onShowPathInAirScout: () -> Unit,
@@ -42,6 +41,7 @@ fun FrameWindowScope.MainWindow(
      * message aims at whoever it was addressed to rather than at oneself.
      */
     onDirectedMessageClicked: (ChatMessage) -> Unit,
+    onMessageStationClicked: (ChatMessage, StationSelectionSource) -> Unit,
     /** Whether a message came from this station; decides its row colour. */
     isOwnMessage: (ChatMessage) -> Boolean,
     /** How old a message is, for the fading highlight. */
@@ -133,6 +133,7 @@ fun FrameWindowScope.MainWindow(
                             state = state,
                             onCandidateClicked = onCandidateClicked,
                             onDirectedMessageClicked = onDirectedMessageClicked,
+                            onMessageStationClicked = onMessageStationClicked,
                             isOwnMessage = isOwnMessage,
                             messageAgeSeconds = messageAgeSeconds,
                         )
@@ -140,7 +141,6 @@ fun FrameWindowScope.MainWindow(
                     {
                         StationColumn(
                             state = state,
-                            skedBands = skedBands,
                             openInBrowser = openInBrowser,
                             onShowOnMap = onShowOnMap,
                             onShowPathInAirScout = onShowPathInAirScout,
@@ -167,6 +167,7 @@ private fun MessageColumn(
     state: MainWindowState,
     onCandidateClicked: (TimelineCandidate) -> Unit,
     onDirectedMessageClicked: (ChatMessage) -> Unit,
+    onMessageStationClicked: (ChatMessage, StationSelectionSource) -> Unit,
     isOwnMessage: (ChatMessage) -> Boolean,
     messageAgeSeconds: (ChatMessage) -> Long,
 ) {
@@ -174,6 +175,13 @@ private fun MessageColumn(
         state = state.messageSplitter,
         orientation = SplitterOrientation.VERTICAL,
         modifier = Modifier.fillMaxSize(),
+        minimumPaneSizes = listOf(
+            SplitterState.DEFAULT_MIN_PANE_PX.dp,
+            Density.CONTROL_HEIGHT,
+            TimelineGeometry.HEIGHT.dp,
+            Density.CONTROL_HEIGHT,
+            SplitterState.DEFAULT_MIN_PANE_PX.dp,
+        ),
         panes = listOf(
             {
                 SnippetContextMenu(state.snippets.entries, state.chatInput) {
@@ -216,6 +224,7 @@ private fun MessageColumn(
                         publicMessages = state.publicMessages,
                         clusterMessages = state.clusterMessages,
                         qsoOfTheOther = state.qsoOfTheOther,
+                        onStationMessageClicked = onMessageStationClicked,
                         modifier = Modifier.fillMaxSize(),
                     )
                 }
@@ -230,7 +239,6 @@ private fun MessageColumn(
 @Composable
 private fun StationColumn(
     state: MainWindowState,
-    skedBands: List<Band>,
     openInBrowser: Consumer<String>,
     onShowOnMap: () -> Unit,
     onShowPathInAirScout: () -> Unit,
@@ -238,6 +246,10 @@ private fun StationColumn(
     onFiltersChanged: () -> Unit,
     onShowMorePriorities: () -> Unit,
 ) {
+    val stationContextMenu = remember(state) {
+        StationContextMenuState(state::selectStation)
+    }
+
     SplitterPane(
         state = state.rightSplitter,
         orientation = SplitterOrientation.VERTICAL,
@@ -248,24 +260,37 @@ private fun StationColumn(
                     StationFilterBar(
                         filters = state.stationFilter,
                         activeBands = state.activeBands,
+                        reachability = state.reachability,
                         onChanged = {
                             onFiltersChanged()
                         },
+                        onQtfDirectionChanged = state::applyExplicitQtfFilterDirection,
+                        onReset = state::resetStationFilters,
                         modifier = Modifier.fillMaxWidth(),
                     )
                     HorizontalDivider(thickness = Density.HAIRLINE)
-                    SnippetContextMenu(state.snippets.entries, state.chatInput) {
+                    DataTableView(
-                        DataTableView(
+                        state = state.stations,
-                            state = state.stations,
+                        modifier = Modifier.fillMaxSize(),
-                            modifier = Modifier.fillMaxSize(),
+                        emphasizeCell = { member, column ->
-                            onRowClick = onStationSelected,
+                            column.id == "callsign" && state.newJoined.isRecent(member)
-                        )
+                        },
-                    }
+                        onRowClick = onStationSelected,
+                        onRowContextMenu = { member, position ->
+                            stationContextMenu.open(
+                                listOf(member),
+                                StationSelectionSource.STATION_CONTEXT_MENU,
+                                position,
+                            )
+                        },
+                        selectOnRowClick = false,
+                    )
                 }
             },
             {
                 TopPriorityBar(
                     state = state.topPriority,
+                    newJoined = state.newJoined,
                     onShowMore = onShowMorePriorities,
                     modifier = Modifier.fillMaxWidth(),
                 )
@@ -274,8 +299,8 @@ private fun StationColumn(
                 SelectedStationPanel(
                     state = state.selectedStation,
                     messages = state.selectedStationMessages,
-                    skedBands = skedBands,
                     activeBands = state.activeBands,
+                    contentSplitter = state.selectedStationSplitter,
                     openInBrowser = openInBrowser,
                     onShowOnMap = onShowOnMap,
                     onShowPathInAirScout = onShowPathInAirScout,
@@ -284,4 +309,5 @@ private fun StationColumn(
             },
         ),
     )
+    StationContextOverlays(stationContextMenu, state, onShowOnMap)
 }

app-desktop/src/main/kotlin/kst4contest/view/compose/MainWindowHost.kt

@@ -1,6 +1,5 @@
 package kst4contest.view.compose
 
-import kst4contest.model.Band
 import kst4contest.model.ChatMember
 import kst4contest.model.ChatMessage
 import java.util.function.Consumer
@@ -34,12 +33,12 @@ object MainWindowHost {
      */
     private var currentState by androidx.compose.runtime.mutableStateOf<MainWindowState?>(null)
     private var currentActions by androidx.compose.runtime.mutableStateOf<MainMenuActions?>(null)
-    private var currentSkedBands by androidx.compose.runtime.mutableStateOf<(() -> List<Band>)?>(null)
     private var currentOpenInBrowser by androidx.compose.runtime.mutableStateOf<Consumer<String>?>(null)
     private var currentOnShowOnMap by androidx.compose.runtime.mutableStateOf<(() -> Unit)?>(null)
     private var currentOnShowPathInAirScout by androidx.compose.runtime.mutableStateOf<(() -> Unit)?>(null)
     private var currentOnStationSelected by androidx.compose.runtime.mutableStateOf<((ChatMember) -> Unit)?>(null)
     private var currentOnDirectedMessageClicked by androidx.compose.runtime.mutableStateOf<((ChatMessage) -> Unit)?>(null)
+    private var currentOnMessageStationClicked by androidx.compose.runtime.mutableStateOf<((ChatMessage, StationSelectionSource) -> Unit)?>(null)
     private var currentIsOwnMessage by androidx.compose.runtime.mutableStateOf<((ChatMessage) -> Boolean)?>(null)
     private var currentMessageAgeSeconds by androidx.compose.runtime.mutableStateOf<((ChatMessage) -> Long)?>(null)
     private var currentOnFiltersChanged by androidx.compose.runtime.mutableStateOf<(() -> Unit)?>(null)
@@ -79,12 +78,12 @@ object MainWindowHost {
          * leave the client running with the chat connected and nothing to see it in.
          */
         onCloseRequest: () -> Unit,
-        skedBands: () -> List<Band>,
         openInBrowser: Consumer<String>,
         onShowOnMap: () -> Unit,
         onShowPathInAirScout: () -> Unit,
         onStationSelected: (ChatMember) -> Unit,
         onDirectedMessageClicked: (ChatMessage) -> Unit,
+        onMessageStationClicked: (ChatMessage, StationSelectionSource) -> Unit,
         isOwnMessage: (ChatMessage) -> Boolean,
         messageAgeSeconds: (ChatMessage) -> Long,
         onFiltersChanged: () -> Unit,
@@ -93,12 +92,12 @@ object MainWindowHost {
     ) {
         currentState = state
         currentActions = actions
-        currentSkedBands = skedBands
         currentOpenInBrowser = openInBrowser
         currentOnShowOnMap = onShowOnMap
         currentOnShowPathInAirScout = onShowPathInAirScout
         currentOnStationSelected = onStationSelected
         currentOnDirectedMessageClicked = onDirectedMessageClicked
+        currentOnMessageStationClicked = onMessageStationClicked
         currentIsOwnMessage = isOwnMessage
         currentMessageAgeSeconds = messageAgeSeconds
         currentOnFiltersChanged = onFiltersChanged
@@ -151,12 +150,12 @@ object MainWindowHost {
             MainWindow(
                 state = s,
                 actions = a,
-                skedBands = currentSkedBands?.invoke() ?: emptyList(),
                 openInBrowser = currentOpenInBrowser ?: Consumer { _ -> },
                 onShowOnMap = currentOnShowOnMap ?: {},
                 onShowPathInAirScout = currentOnShowPathInAirScout ?: {},
                 onStationSelected = currentOnStationSelected ?: {},
                 onDirectedMessageClicked = currentOnDirectedMessageClicked ?: {},
+                onMessageStationClicked = currentOnMessageStationClicked ?: { _, _ -> },
                 isOwnMessage = currentIsOwnMessage ?: { false },
                 messageAgeSeconds = currentMessageAgeSeconds ?: { 0L },
                 onFiltersChanged = currentOnFiltersChanged ?: {},

app-desktop/src/main/kotlin/kst4contest/view/compose/MainWindowState.kt

@@ -10,6 +10,8 @@ import androidx.compose.runtime.setValue
 import kst4contest.controller.On4KstConnectionState
 import kst4contest.model.ChatPreferences
 import kst4contest.observe.SimpleRoster
+import kst4contest.view.compose.map.MapDisplaySettingsState
+import kst4contest.view.compose.map.MapNavigationState
 
 /**
  * Everything the main window draws, in one object.
@@ -55,19 +57,87 @@ class MainWindowState(
     val bandUpgradeNotice: BlinkingNotice,
     val threadButtons: ThreadStatusButtons,
 
-    /** The three splitters, whose positions the operator has arranged and stored. */
+    /** The splitters whose positions the operator has arranged and stored. */
     val outerSplitter: SplitterState,
     val messageSplitter: SplitterState,
     val rightSplitter: SplitterState,
+    val selectedStationSplitter: SplitterState = SplitterState(
+        SELECTED_STATION_PANE_COUNT,
+        doubleArrayOf(0.55),
+    ) {},
+    val newJoined: NewJoinedState = NewJoinedState(onSelect = {}),
+    val reachability: ReachabilityState = ReachabilityState(activeBands),
 ) {
 
+    internal val mapNavigation = MapNavigationState()
+
+    internal val mapDisplaySettings = MapDisplaySettingsState(prefs)
+
+    init {
+        stationSelection.explicitSelectionListener = { member, source ->
+            when {
+                source == StationSelectionSource.RESET_VIEW -> mapNavigation.resetToHome()
+                member != null -> StationIdentity.of(member)?.let(mapNavigation::fitSelectedPath)
+            }
+        }
+    }
+
+    /** Explicit map analysis requested from either station context menu. */
+    val mapReachability = MapReachabilityState(prefs.stn_loginLocatorMainCat.orEmpty())
+
     /** The shortcut buttons above the send line. */
     /**
      * The one path that selects a station for the whole application (panel, table, score
      * service, send line). Set by the host after construction; other windows, such as the
      * map, go through it instead of touching [selectedStation] alone. Null clears.
      */
-    var stationSelector: ((ChatMember?) -> Unit)? = null
+    var stationSelector: ((ChatMember?, StationSelectionSource) -> Unit)? = null
+
+    /** Application callback that rebuilds the controller and Compose station filters. */
+    var stationFiltersChanged: (() -> Unit)? = null
+
+    /** Debounced persistence hook shared by the main and map windows. */
+    var layoutSaveRequested: (() -> Unit)? = null
+
+    /** Contactinfo-equivalent manual Worked action supplied by the controller host. */
+    var markStationWorked: ((ChatMember, kst4contest.model.Band) -> Boolean)? = null
+
+    /** Persistent any-band Worked gross fields used by the optional map overlay. */
+    var workedGrossFieldsProvider: (() -> Set<String>) = { emptySet() }
+
+    val stationSelection: StationSelectionState
+        get() = selectedStation.stationSelection
+
+    /** Routes every explicit station choice through the application-level action. */
+    fun selectStation(member: ChatMember?, source: StationSelectionSource) {
+        mapReachability.selectionChanged(StationIdentity.of(member))
+        val selector = stationSelector
+        if (selector != null) {
+            selector(member, source)
+        } else {
+            selectedStation.select(member, source)
+        }
+    }
+
+    fun resetStationFilters() {
+        stationFilter.reset()
+        stationFiltersChanged?.invoke()
+    }
+
+    /** Applies only a deliberate QTF filter entry, never a restored or reset filter value. */
+    fun applyExplicitQtfFilterDirection(qtf: Double) {
+        mapNavigation.centerOnQtf(qtf)
+        applyExplicitQtfHeading(prefs, qtf)
+    }
+
+    /** Refreshes map geometry after the Station settings draft has been applied. */
+    fun refreshMapDisplaySettings() {
+        mapDisplaySettings.refreshFromPreferences()
+    }
+
+    fun requestLayoutSave() {
+        layoutSaveRequested?.invoke()
+    }
 
     val shortcuts = RosterMirror(prefs.getLst_txtShortCutBtnList())
 
@@ -103,6 +173,9 @@ class MainWindowState(
 
         /** Station list, top priorities, selected station. */
         const val RIGHT_PANE_COUNT = 3
+
+        /** Selected-station message table and its scrollable action area. */
+        const val SELECTED_STATION_PANE_COUNT = 2
     }
 }
 

app-desktop/src/main/kotlin/kst4contest/view/compose/ManualQtfHeadingSynchronizer.kt

@@ -0,0 +1,19 @@
+package kst4contest.view.compose
+
+import kst4contest.model.ChatPreferences
+
+private const val MIN_QTF = 0.0
+private const val MAX_QTF = 360.0
+
+/**
+ * Applies a deliberate filter direction to the runtime antenna heading without sending a rotor command.
+ *
+ * @return true when the runtime heading was updated
+ */
+internal fun applyExplicitQtfHeading(prefs: ChatPreferences, qtf: Double): Boolean {
+    if (!qtf.isFinite() || qtf !in MIN_QTF..MAX_QTF) return false
+    if (!prefs.isQtfFilterDirectionAsAntennaHeadingEnabled) return false
+
+    prefs.actualQTF.set(qtf)
+    return true
+}

app-desktop/src/main/kotlin/kst4contest/view/compose/MapReachabilityState.kt

@@ -0,0 +1,83 @@
+package kst4contest.view.compose
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import kst4contest.model.Band
+import kst4contest.model.ChatMember
+import kst4contest.view.map.PathAnalysisResult
+
+/**
+ * Explicit map reachability request shared by station-list and map context menus.
+ * A monotonically increasing request ID prevents older callbacks from replacing a
+ * result for a newer station or band.
+ */
+class MapReachabilityState(
+    private val ownLocator: String,
+    requester: (ChatMember, Band, (PathAnalysisResult) -> Unit) -> Unit = { _, _, _ -> },
+) {
+    var requester: (ChatMember, Band, (PathAnalysisResult) -> Unit) -> Unit = requester
+
+    var result: PathAnalysisResult? by mutableStateOf(null)
+        private set
+
+    var running: Boolean by mutableStateOf(false)
+        private set
+
+    var requestRevision: Long by mutableStateOf(0L)
+        private set
+
+    var targetIdentity: StationIdentity? by mutableStateOf(null)
+        private set
+
+    var requestedBand: Band? by mutableStateOf(null)
+        private set
+
+    fun calculate(member: ChatMember?, band: Band?): Boolean {
+        if (member == null || band == null) return false
+        val identity = StationIdentity.of(member) ?: return false
+        val requestId = ++requestRevision
+        targetIdentity = identity
+        requestedBand = band
+        running = true
+        result = PathAnalysisResult.loading(ownLocator, member.qra, member.callSignRaw)
+
+        try {
+            requester(member, band) { completed ->
+                if (requestRevision == requestId
+                    && targetIdentity == identity
+                    && requestedBand == band
+                ) {
+                    result = completed
+                    running = false
+                }
+            }
+        } catch (exception: RuntimeException) {
+            if (requestRevision == requestId) {
+                result = PathAnalysisResult.noProfile(
+                    "Failed",
+                    ownLocator,
+                    member.qra,
+                    member.callSignRaw,
+                    Double.NaN,
+                    member.getQTFdirection() ?: Double.NaN,
+                    Double.NaN,
+                    Double.NaN,
+                    band.defaultAnalysisFrequencyMHz,
+                    exception.message ?: "Reachability calculation failed.",
+                )
+                running = false
+            }
+        }
+        return true
+    }
+
+    fun selectionChanged(identity: StationIdentity?) {
+        if (targetIdentity == null || targetIdentity == identity) return
+        requestRevision++
+        targetIdentity = null
+        requestedBand = null
+        result = null
+        running = false
+    }
+}

app-desktop/src/main/kotlin/kst4contest/view/compose/MessageTabs.kt

@@ -2,13 +2,11 @@ package kst4contest.view.compose
 
 import kst4contest.view.i18n.LocalStrings
 import androidx.compose.foundation.background
-import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.heightIn
 import androidx.compose.foundation.layout.padding
 import androidx.compose.material3.HorizontalDivider
 import androidx.compose.material3.MaterialTheme
@@ -18,13 +16,8 @@ import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
-import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.draw.drawBehind
+import androidx.compose.foundation.border
-import androidx.compose.ui.geometry.Offset
-import androidx.compose.ui.geometry.Size
-import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.unit.dp
 import kst4contest.model.ChatMessage
 import kst4contest.model.ClusterMessage
 
@@ -40,6 +33,7 @@ fun MessageTabs(
     publicMessages: DataTableState<ChatMessage>,
     clusterMessages: DataTableState<ClusterMessage>,
     qsoOfTheOther: DataTableState<ChatMessage>,
+    onStationMessageClicked: (ChatMessage, StationSelectionSource) -> Unit = { _, _ -> },
     modifier: Modifier = Modifier,
 ) {
     var selected by remember { mutableStateOf(0) }
@@ -51,35 +45,20 @@ fun MessageTabs(
         strings.messagesQsoOfTheOther,
     )
 
-    Column(modifier = modifier.fillMaxSize()) {
+    Column(
+        modifier = modifier
+            .fillMaxSize()
+            .border(Density.HAIRLINE, MaterialTheme.colorScheme.outlineVariant),
+    ) {
         Row(modifier = Modifier.fillMaxWidth().background(MaterialTheme.colorScheme.surfaceVariant)) {
             titles.forEachIndexed { index, title ->
                 val isSelected = index == selected
-                val underline = MaterialTheme.colorScheme.primary
 
-                Box(
+                CompactTab(
-                    modifier = Modifier
+                    text = title,
-                        .heightIn(min = Density.TAB_MIN_HEIGHT)
+                    selected = isSelected,
-                        .background(
+                    onClick = { selected = index },
-                            if (isSelected) MaterialTheme.colorScheme.secondaryContainer
+                )
-                            else Color.Transparent
-                        )
-                        .clickable { selected = index }
-                        .drawBehind {
-                            if (isSelected) {
-                                val thickness = 2.dp.toPx()
-                                drawRect(
-                                    color = underline,
-                                    topLeft = Offset(0f, size.height - thickness),
-                                    size = Size(size.width, thickness),
-                                )
-                            }
-                        }
-                        .padding(horizontal = Density.TAB_HORIZONTAL_PADDING, vertical = 5.dp),
-                    contentAlignment = Alignment.Center,
-                ) {
-                    Text(title, style = MaterialTheme.typography.bodyMedium, maxLines = 1)
-                }
             }
         }
 
@@ -87,9 +66,21 @@ fun MessageTabs(
 
         Box(modifier = Modifier.fillMaxSize()) {
             when (selected) {
-                0 -> DataTableView(publicMessages, modifier = Modifier.fillMaxSize())
+                0 -> DataTableView(
+                    publicMessages,
+                    modifier = Modifier.fillMaxSize(),
+                    onRowClick = { message ->
+                        onStationMessageClicked(message, StationSelectionSource.PUBLIC_MESSAGE)
+                    },
+                )
                 1 -> DataTableView(clusterMessages, modifier = Modifier.fillMaxSize())
-                else -> DataTableView(qsoOfTheOther, modifier = Modifier.fillMaxSize())
+                else -> DataTableView(
+                    qsoOfTheOther,
+                    modifier = Modifier.fillMaxSize(),
+                    onRowClick = { message ->
+                        onStationMessageClicked(message, StationSelectionSource.QSO_OF_THE_OTHER)
+                    },
+                )
             }
         }
     }

app-desktop/src/main/kotlin/kst4contest/view/compose/MonitorWindow.kt

@@ -4,7 +4,6 @@ import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
-import androidx.compose.material3.HorizontalDivider
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
@@ -17,10 +16,11 @@ import kst4contest.model.ClusterMessage
 /**
  * The cluster and QSO monitor.
  *
- * Two live tables, one above the other. This is the first window in which the table
+ * Two live tables, one above the other, with a divider the operator can drag. This
- * carries data that changes while the operator watches, which is why the row identity
+ * is the first window in which the table carries data that changes while the operator
- * rules in DataTableState matter here and not in the settings window: in Etappe 2 the
+ * watches, which is why the row identity rules in DataTableState matter here and not in
- * visible defects all came from that coupling, not from the table itself.
+ * the settings window: in Etappe 2 the visible defects all came from that coupling, not
+ * from the table itself.
  */
 object MonitorWindow {
 
@@ -44,6 +44,8 @@ object MonitorWindow {
     fun show(
         clusterTable: DataTableState<ClusterMessage>,
         qsoTable: DataTableState<ChatMessage>,
+        /** The divider between the two tables, remembered in the profile (#144). */
+        splitter: SplitterState,
         darkMode: Boolean,
         baseFontSizeSp: Float,
         /**
@@ -70,7 +72,7 @@ object MonitorWindow {
             heightDp = heightDp,
             onResized = onResized,
         ) { _ ->
-            MonitorContent(clusterTable, qsoTable)
+            MonitorContent(clusterTable, qsoTable, splitter)
         }
     }
 }
@@ -80,29 +82,31 @@ object MonitorWindow {
 internal fun MonitorContent(
     clusterTable: DataTableState<ClusterMessage>,
     qsoTable: DataTableState<ChatMessage>,
+    splitter: SplitterState,
 ) {
+    val strings = kst4contest.view.i18n.LocalStrings.current
+
     Surface(modifier = Modifier.fillMaxSize()) {
-        Column(modifier = Modifier.fillMaxSize().padding(4.dp)) {
+        /*
-            Text("DX cluster", style = MaterialTheme.typography.titleSmall)
+         * Each heading sits in the pane of its table, so dragging the divider moves the
+         * heading with the table it names rather than leaving it stranded above the other.
+         */
+        SplitterPane(
+            state = splitter,
+            orientation = SplitterOrientation.VERTICAL,
+            modifier = Modifier.fillMaxSize().padding(4.dp),
+            panes = listOf(
+                { MonitorPane(strings.monitorDxCluster, clusterTable) },
+                { MonitorPane(strings.messagesQsoOfTheOther, qsoTable) },
+            ),
+        )
+    }
+}
 
-            /*
+@Composable
-             * Half each, fixed. The JavaFX window used a SplitPane whose divider the
+private fun <T> MonitorPane(heading: String, table: DataTableState<T>) {
-             * operator could drag, and that position was stored; reproducing the
+    Column(modifier = Modifier.fillMaxSize()) {
-             * gesture belongs with the station list of Etappe 5, where a split pane is
+        Text(heading, style = MaterialTheme.typography.titleSmall, modifier = Modifier.padding(top = 4.dp))
-             * unavoidable. Until then an even split is honest rather than a broken
+        DataTableView(table, modifier = Modifier.weight(1f).fillMaxWidth())
-             * handle.
-             */
-            DataTableView(clusterTable, modifier = Modifier.weight(1f).fillMaxWidth())
-
-            HorizontalDivider(thickness = Density.HAIRLINE)
-
-            Text(
-                kst4contest.view.i18n.LocalStrings.current.messagesQsoOfTheOther,
-                style = MaterialTheme.typography.titleSmall,
-                modifier = Modifier.padding(top = 4.dp),
-            )
-
-            DataTableView(qsoTable, modifier = Modifier.weight(1f).fillMaxWidth())
-        }
     }
 }

app-desktop/src/main/kotlin/kst4contest/view/compose/NewJoinedState.kt

@@ -0,0 +1,100 @@
+package kst4contest.view.compose
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import kst4contest.model.ChatMember
+import kst4contest.model.RecentChatJoin
+
+/** One selectable station in the transient New joined group. */
+class NewJoinedEntry internal constructor(
+    val identity: StationIdentity,
+    val label: String,
+    val joinedAtEpochMillis: Long,
+    private val member: ChatMember,
+    private val onSelect: (ChatMember) -> Unit,
+) {
+    fun select() = onSelect(member)
+}
+
+/**
+ * Compose-facing view of live ON4KST join events.
+ *
+ * Initial and resynchronized user lists never reach this state. It receives the core's
+ * live-event roster and intersects it with the currently active station roster, so a
+ * departed station disappears immediately. The clock is injected to make expiry exact
+ * and testable without waiting ten minutes.
+ */
+class NewJoinedState(
+    private val clock: () -> Long = System::currentTimeMillis,
+    private val onSelect: (ChatMember) -> Unit,
+) {
+
+    private var events: List<RecentChatJoin> = emptyList()
+    private var activeMembers: List<ChatMember> = emptyList()
+    private var liveEntries by mutableStateOf<List<NewJoinedEntry>>(emptyList())
+
+    val entries: List<NewJoinedEntry>
+        get() = liveEntries
+
+    val visibleEntries: List<NewJoinedEntry>
+        get() = liveEntries.take(SHOWN)
+
+    val overflowEntries: List<NewJoinedEntry>
+        get() = liveEntries.drop(SHOWN)
+
+    fun updateEvents(newEvents: List<RecentChatJoin>) {
+        events = newEvents.toList()
+        refresh()
+    }
+
+    fun updateActiveMembers(newMembers: List<ChatMember>) {
+        activeMembers = newMembers.toList()
+        refresh()
+    }
+
+    /** Removes expired or departed entries and resolves each event to the latest row instance. */
+    fun refresh() {
+        val now = clock()
+        val activeByIdentity = activeMembers.mapNotNull { member ->
+            StationIdentity.of(member)?.let { identity -> identity to member }
+        }.toMap()
+
+        val firstJoinByIdentity = linkedMapOf<StationIdentity, RecentChatJoin>()
+        events.forEach { event ->
+            val identity = StationIdentity.of(event.callSign, event.categoryNumber)
+                ?: return@forEach
+            val existing = firstJoinByIdentity[identity]
+            if (existing == null || event.joinedAtEpochMillis < existing.joinedAtEpochMillis) {
+                firstJoinByIdentity[identity] = event
+            }
+        }
+
+        liveEntries = firstJoinByIdentity
+            .mapNotNull { (identity, event) ->
+                val active = activeByIdentity[identity] ?: return@mapNotNull null
+                val ageMillis = now - event.joinedAtEpochMillis
+                if (ageMillis < 0L || ageMillis >= VALIDITY_MILLIS) {
+                    return@mapNotNull null
+                }
+                NewJoinedEntry(
+                    identity = identity,
+                    label = identity.callSign,
+                    joinedAtEpochMillis = event.joinedAtEpochMillis,
+                    member = active,
+                    onSelect = onSelect,
+                )
+            }
+            .sortedByDescending(NewJoinedEntry::joinedAtEpochMillis)
+    }
+
+    fun isRecent(member: ChatMember): Boolean {
+        val identity = StationIdentity.of(member) ?: return false
+        return liveEntries.any { it.identity == identity }
+    }
+
+    companion object {
+        const val VALIDITY_MILLIS = 10L * 60L * 1000L
+        const val SHOWN = 5
+    }
+}

app-desktop/src/main/kotlin/kst4contest/view/compose/ObservedValue.kt

@@ -1,7 +1,11 @@
 package kst4contest.view.compose
 
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.State
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import kst4contest.observe.ObservableValue
 import java.util.function.Consumer
@@ -35,3 +39,19 @@ class ObservedValue<T>(private val source: ObservableValue<T>) {
         source.removeListener(follower)
     }
 }
+
+/** Observes a domain value only for the lifetime of the current composition. */
+@Composable
+internal fun <T> ObservableValue<T>.observeAsState(): State<T?> {
+    val state = remember(this) { mutableStateOf(get()) }
+
+    DisposableEffect(this) {
+        val follower = Consumer<T> { updated -> state.value = updated }
+        addListener(follower)
+        // Close the gap between the initial read and listener registration.
+        state.value = get()
+        onDispose { removeListener(follower) }
+    }
+
+    return state
+}

app-desktop/src/main/kotlin/kst4contest/view/compose/ReachabilityState.kt

@@ -0,0 +1,58 @@
+package kst4contest.view.compose
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import kst4contest.model.Band
+import kst4contest.model.ChatMember
+
+/** One selectable entry in the reachability-band control. A null band means Auto. */
+data class ReachabilityBandOption(val band: Band?, val label: String)
+
+/**
+ * Operator-controlled reachability selection and the one explicit calculation action.
+ *
+ * Band selection only invalidates cached table/filter presentation. Online terrain work
+ * stays behind [calculateSelected], so recomposition and sorting cannot consume API calls.
+ */
+class ReachabilityState(
+    activeBands: Set<Band>,
+    private val resolveAutoBand: (ChatMember) -> Band? = { null },
+    private val selectedStation: () -> ChatMember? = { null },
+    private val calculate: (ChatMember, Band) -> Unit = { _, _ -> },
+    private val refresh: () -> Unit = { },
+) {
+    private val supportedBands = activeBands.toSet()
+
+    val options: List<ReachabilityBandOption> =
+        listOf(ReachabilityBandOption(null, "Auto")) +
+            activeBands.sortedBy(Band::ordinal).map { band ->
+                ReachabilityBandOption(band, band.displayLabel)
+            }
+
+    var bandOverride: Band? by mutableStateOf(null)
+        private set
+
+    val selectedOption: ReachabilityBandOption
+        get() = options.first { it.band == bandOverride }
+
+    val canCalculate: Boolean
+        get() = selectedStation()?.let(::resolveBand) != null
+
+    fun selectBand(band: Band?) {
+        val accepted = band?.takeIf(supportedBands::contains)
+        if (bandOverride == accepted) return
+        bandOverride = accepted
+        refresh()
+    }
+
+    fun resolveBand(member: ChatMember): Band? = bandOverride ?: resolveAutoBand(member)
+
+    /** Returns whether a complete station/band request was handed to the service. */
+    fun calculateSelected(): Boolean {
+        val member = selectedStation() ?: return false
+        val band = resolveBand(member) ?: return false
+        calculate(member, band)
+        return true
+    }
+}

app-desktop/src/main/kotlin/kst4contest/view/compose/SelectedStationMessagePredicate.kt

@@ -0,0 +1,60 @@
+package kst4contest.view.compose
+
+import kst4contest.model.ChatMember
+import kst4contest.model.ChatMessage
+import java.util.Locale
+import java.util.function.Predicate
+
+/** Builds the selected-station message filter without changing the source history. */
+object SelectedStationMessagePredicate {
+
+    @JvmStatic
+    fun forSelection(
+        filter: SelectedMessageFilter,
+        selected: ChatMember?,
+        ownCallSign: String?,
+    ): Predicate<ChatMessage> {
+        val selectedIdentity = StationIdentity.of(selected)
+        val ownCall = ownCallSign.normalizedCall()
+
+        return Predicate { message ->
+            if (selectedIdentity?.categoryNumber == null) {
+                return@Predicate false
+            }
+
+            val senderCall = message?.sender?.callSign.normalizedCall()
+            val receiverCall = message?.receiver?.callSign.normalizedCall()
+            val messageCategory = message?.chatCategory?.categoryNumber
+            if (senderCall.isBlank() || receiverCall.isBlank() ||
+                messageCategory != selectedIdentity.categoryNumber
+            ) {
+                return@Predicate false
+            }
+
+            val selectedIsSender = senderCall == selectedIdentity.callSign
+            val selectedIsReceiver = receiverCall == selectedIdentity.callSign
+            val ownIsSender = senderCall == ownCall
+            val ownIsReceiver = receiverCall == ownCall
+            val isPublic = message.isMessageDirectedToCommunity || receiverCall == PUBLIC_RECEIVER
+
+            when (filter) {
+                SelectedMessageFilter.PM_TO_ME ->
+                    ownCall.isNotBlank() && (
+                        (!isPublic && ((selectedIsSender && ownIsReceiver) ||
+                            (ownIsSender && selectedIsReceiver))) ||
+                            (isPublic && selectedIsSender && message.isMessageDirectedToMe)
+                        )
+
+                SelectedMessageFilter.PM_TO_OTHER ->
+                    ownCall.isNotBlank() && selectedIsSender && !isPublic && !ownIsReceiver
+
+                SelectedMessageFilter.PUBLIC -> selectedIsSender && isPublic
+                SelectedMessageFilter.NOTHING -> selectedIsSender || selectedIsReceiver
+            }
+        }
+    }
+
+    private fun String?.normalizedCall(): String = this?.trim()?.uppercase(Locale.ROOT).orEmpty()
+
+    private const val PUBLIC_RECEIVER = "ALL"
+}

app-desktop/src/main/kotlin/kst4contest/view/compose/SelectedStationPanel.kt

@@ -2,15 +2,36 @@ package kst4contest.view.compose
 
 import kst4contest.view.i18n.LocalStrings
 import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.BoxWithConstraints
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.ExperimentalLayoutApi
 import androidx.compose.foundation.layout.FlowRow
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.heightIn
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.rememberScrollbarAdapter
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.foundation.VerticalScrollbar
+import androidx.compose.foundation.LocalScrollbarStyle
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
+import androidx.compose.material3.DropdownMenu
+import androidx.compose.material3.DropdownMenuItem
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.foundation.selection.selectable
 import androidx.compose.material3.ExperimentalMaterial3Api
@@ -22,8 +43,26 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
+import androidx.compose.ui.platform.testTag
 import kst4contest.model.Band
 import java.util.function.Consumer
+import kotlinx.coroutines.delay
+
+internal const val SELECTED_STATION_PANEL_TAG = "selected-station-panel"
+internal const val SELECTED_MESSAGES_TABLE_TAG = "selected-messages-table"
+internal const val SELECTED_NOT_QRV_GROUP_TAG = "selected-not-qrv-group"
+internal const val SELECTED_SKED_GROUP_TAG = "selected-sked-group"
+internal const val NEW_JOINED_MORE_TAG = "new-joined-more"
+internal const val NEW_JOINED_GROUP_TAG = "new-joined-group"
+internal const val PRIORITY_GROUP_TAG = "priority-group"
+
+internal fun skedBandOptions(activeBands: Set<Band>): List<Band> {
+    val options = ArrayList<Band>(activeBands.size)
+    Band.entries.forEach { band ->
+        if (activeBands.contains(band)) options.add(band)
+    }
+    return options
+}
 
 /**
  * The panel below the station list, for whichever station is selected.
@@ -40,10 +79,9 @@ import java.util.function.Consumer
 fun SelectedStationPanel(
     state: SelectedStationState,
     messages: DataTableState<kst4contest.model.ChatMessage>,
-    /** The bands this station is set up for; BandOpportunityResolver decides them. */
+    /** My own station's enabled bands; used for NOT-QRV and sked controls. */
-    skedBands: List<Band>,
-    /** My own station's enabled bands; used for the "Tag not QRV" checkboxes. */
     activeBands: Set<Band>,
+    contentSplitter: SplitterState? = null,
     openInBrowser: Consumer<String>,
     onShowOnMap: () -> Unit,
     onShowPathInAirScout: () -> Unit,
@@ -51,136 +89,183 @@ fun SelectedStationPanel(
 ) {
     val strings = LocalStrings.current
     val member = state.selected
+    val splitter = contentSplitter ?: remember {
+        SplitterState(2, doubleArrayOf(DEFAULT_SELECTED_MESSAGE_FRACTION)) {}
+    }
 
-    Column(
+    Box(
-        modifier = modifier.fillMaxWidth().padding(4.dp),
+        modifier = modifier
-        verticalArrangement = Arrangement.spacedBy(3.dp),
+            .fillMaxWidth()
+            .testTag(SELECTED_STATION_PANEL_TAG)
+            .background(MaterialTheme.colorScheme.surfaceVariant.copy(alpha = 0.22f))
+            .border(Density.HAIRLINE, MaterialTheme.colorScheme.outlineVariant),
     ) {
+    Column(modifier = Modifier.fillMaxSize()) {
         if (member == null) {
             Text(
                 strings.selectedNone,
                 style = MaterialTheme.typography.bodyMedium,
                 color = MaterialTheme.colorScheme.outline,
+                modifier = Modifier.padding(4.dp),
             )
             return@Column
         }
 
-        Text(
+        SelectedStationHeaderAndFilter(state, member)
-            member.callSign.orEmpty() + "  " + member.qra.orEmpty(),
+
-            style = MaterialTheme.typography.titleSmall,
+        SplitterPane(
-            fontWeight = FontWeight.Bold,
+            state = splitter,
+            orientation = SplitterOrientation.VERTICAL,
+            modifier = Modifier.fillMaxWidth().weight(1f),
+            minimumPaneSizes = listOf(
+                Density.ROW_MIN_HEIGHT * 2,
+                Density.SELECTED_ACTION_AREA_MIN_HEIGHT,
+            ),
+            panes = listOf(
+                {
+                    DataTableView(
+                        state = messages,
+                        modifier = Modifier.fillMaxSize().testTag(SELECTED_MESSAGES_TABLE_TAG),
+                    )
+                },
+                {
+                    SelectedStationFunctions(
+                        state = state,
+                        activeBands = activeBands,
+                        openInBrowser = openInBrowser,
+                        onShowOnMap = onShowOnMap,
+                        onShowPathInAirScout = onShowPathInAirScout,
+                    )
+                },
+            ),
         )
+    }
+    }
+}
 
-        FlowRow(
+@OptIn(ExperimentalLayoutApi::class)
-            horizontalArrangement = Arrangement.spacedBy(16.dp),
+@Composable
-            verticalArrangement = Arrangement.spacedBy(4.dp),
+private fun SelectedStationHeaderAndFilter(
-            modifier = Modifier.padding(bottom = 8.dp)
+    state: SelectedStationState,
-        ) {
+    member: kst4contest.model.ChatMember,
-            val category = member.chatCategory?.let { it.getChatCategoryName(it.categoryNumber) }
+) {
-            if (category != null) {
+    val strings = LocalStrings.current
-                Text(category, style = MaterialTheme.typography.bodySmall)
+    Column(
-            }
+        modifier = Modifier.fillMaxWidth().padding(horizontal = 4.dp, vertical = 2.dp),
-            if (member.getQTFdirection() != null) {
+        verticalArrangement = Arrangement.spacedBy(1.dp),
-                Text("QTF: ${member.getQTFdirection()}°", style = MaterialTheme.typography.bodySmall)
+    ) {
-            }
+        val category = member.chatCategory?.let { it.getChatCategoryName(it.categoryNumber) }
-            if (member.qrb != null) {
+        val detectedBands = state.detectedBands()
-                Text("QRB: ${member.qrb} km", style = MaterialTheme.typography.bodySmall)
+        val metadata = buildList {
-            }
+            category?.let(::add)
-
+            member.getQTFdirection()?.let { add("QTF: $it°") }
+            member.qrb?.let { add("QRB: $it km") }
             val lastActSec = member.activityTimeLastInEpoch
             if (lastActSec > 0L) {
                 val actStr = MessageFormats.clockTime(lastActSec.toString())
-                val minAgo = kst4contest.controller.Utils4KST.time_getSecondsBetweenEpochAndNow(lastActSec.toString()) / 60
+                val minAgo = kst4contest.controller.Utils4KST
-                Text(strings.selectedLastActivity(actStr, minAgo), style = MaterialTheme.typography.bodySmall)
+                    .time_getSecondsBetweenEpochAndNow(lastActSec.toString()) / 60
-            }
+                add(strings.selectedLastActivity(actStr, minAgo))
-
-            val detectedBands = state.detectedBands()
-            if (detectedBands.isNotBlank()) {
-                Text(detectedBands, style = MaterialTheme.typography.bodySmall)
             }
+            add(detectedBands.ifBlank { strings.tooltipBandsNone })
         }
-
+        FlowRow(
-        Form.section(strings.selectedShowMessages) {
+            horizontalArrangement = Arrangement.spacedBy(Density.BUTTON_GAP),
-            FlowRow(horizontalArrangement = Arrangement.spacedBy(Density.BUTTON_GAP)) {
+            verticalArrangement = Arrangement.spacedBy(2.dp),
-                SelectedMessageFilter.entries.forEach { filter ->
+            modifier = Modifier.fillMaxWidth().padding(bottom = 1.dp),
-                    RadioChoice(
+        ) {
-                        label = filter.label,
+            Text(
-                        selected = state.messageFilter == filter,
+                member.callSign.orEmpty(),
-                        onSelect = { state.messageFilter = filter },
+                style = MaterialTheme.typography.titleSmall,
+                fontWeight = FontWeight.Bold,
+            )
+            metadata.forEach { value ->
+                Row(verticalAlignment = Alignment.CenterVertically) {
+                    Text(
+                        "|",
+                        style = MaterialTheme.typography.bodySmall,
+                        color = MaterialTheme.colorScheme.outline,
+                        modifier = Modifier.padding(end = Density.BUTTON_GAP),
                     )
+                    Text(value, style = MaterialTheme.typography.bodySmall)
                 }
             }
         }
 
-        DataTableView(
+        FlowRow(
-            state = messages,
+            modifier = Modifier.fillMaxWidth(),
-            modifier = Modifier.weight(1f).fillMaxWidth(),
+            horizontalArrangement = Arrangement.spacedBy(Density.BUTTON_GAP),
-        )
+            verticalArrangement = Arrangement.spacedBy(Density.FIELD_GAP),
-
+            itemVerticalAlignment = Alignment.CenterVertically,
-        Form.section(strings.selectedTagNotQrv) {
+        ) {
-            FlowRow(horizontalArrangement = Arrangement.spacedBy(Density.BUTTON_GAP)) {
+            Row(
-                val activeNotQrvBands = NotQrvBand.entries.filter { activeBands.contains(it.band) }
+                verticalAlignment = Alignment.CenterVertically,
-                
+                modifier = Modifier.height(Density.CONTROL_HEIGHT),
-                activeNotQrvBands.forEach { band ->
-                    Form.check(band.label, state.isTaggedNotQrv(band)) {
-                        state.tagNotQrv(band, it)
-                    }
-                }
-
-                Form.check(strings.selectedNotQrvAll, activeNotQrvBands.all { state.isTaggedNotQrv(it) }) {
-                    state.tagNotQrvAll(it)
-                }
-            }
-        }
-
-        Form.section("Sked") {
-            FlowRow(
-                horizontalArrangement = Arrangement.spacedBy(16.dp),
-                verticalArrangement = Arrangement.spacedBy(Density.FIELD_GAP)
             ) {
-                Form.inlineChoice(
+                Text(
-                    label = strings.selectedSkedInMinutes,
+                    "${strings.selectedShowMessages}:",
-                    items = SelectedStationState.SKED_MINUTES,
+                    style = MaterialTheme.typography.bodySmall,
-                    selected = state.skedMinutes,
+                    modifier = Modifier.padding(end = Density.BUTTON_GAP),
-                    describe = { it.toString() },
-                    onSelect = { state.skedMinutes = it },
                 )
-                Form.inlineChoice(
+                RadioChoice(
-                    label = strings.selectedBand,
+                    label = SelectedMessageFilter.PM_TO_ME.label,
-                    items = skedBands,
+                    selected = state.messageFilter == SelectedMessageFilter.PM_TO_ME,
-                    selected = state.skedBand,
+                    onSelect = { state.messageFilter = SelectedMessageFilter.PM_TO_ME },
-                    describe = { it.prefix + " MHz" },
-                    onSelect = { state.skedBand = it },
-                )
-                Form.inlineChoice(
-                    label = strings.selectedMode,
-                    items = SelectedStationState.SKED_MODES,
-                    selected = state.skedMode,
-                    describe = { it },
-                    onSelect = { state.skedMode = it },
                 )
             }
-            
+            SelectedMessageFilter.entries.drop(1).forEach { filter ->
-            Row(horizontalArrangement = Arrangement.spacedBy(16.dp), verticalAlignment = Alignment.CenterVertically) {
+                RadioChoice(
-                Form.check(strings.selectedRemindPmIn, state.remindPm) { state.remindPm = it }
+                    label = filter.label,
-                Form.inlineChoice(
+                    selected = state.messageFilter == filter,
-                    label = strings.selectedReminderOffsets,
+                    onSelect = { state.messageFilter = filter },
-                    items = SelectedStationState.REMINDER_OFFSETS,
-                    selected = state.reminderOffsets,
-                    describe = { it },
-                    enabled = state.remindPm,
-                    onSelect = { state.reminderOffsets = it },
                 )
             }
-
-            FlowRow(horizontalArrangement = Arrangement.spacedBy(Density.BUTTON_GAP)) {
-                Form.button(strings.selectedCreateSked, enabled = state.canCreateSked) { state.createSked() }
-                Form.button(strings.selectedSkedFail, enabled = state.canCreateSked) { state.markSkedFail() }
-                Form.button(strings.selectedResetFail, enabled = state.canCreateSked) { state.resetSkedFail() }
-            }
         }
+    }
+}
 
-        Form.section(strings.selectedLookUpAndShow) {
+@OptIn(ExperimentalLayoutApi::class)
+@Composable
+private fun SelectedStationFunctions(
+    state: SelectedStationState,
+    activeBands: Set<Band>,
+    openInBrowser: Consumer<String>,
+    onShowOnMap: () -> Unit,
+    onShowPathInAirScout: () -> Unit,
+) {
+    val strings = LocalStrings.current
+    val scroll = rememberScrollState()
+    Column(
+        modifier = Modifier.fillMaxSize().padding(start = 4.dp, top = 1.dp, bottom = 2.dp),
+        verticalArrangement = Arrangement.spacedBy(1.dp),
+    ) {
+        Box(modifier = Modifier.fillMaxWidth().weight(1f)) {
+            Column(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(end = Density.SCROLLBAR_GUTTER)
+                    .verticalScroll(scroll),
+            ) {
+                SelectedStationActionGroups(
+                    state = state,
+                    activeBands = activeBands,
+                )
+            }
+
+            VerticalScrollbar(
+                adapter = rememberScrollbarAdapter(scroll),
+                modifier = Modifier.align(Alignment.CenterEnd).fillMaxHeight(),
+                style = LocalScrollbarStyle.current.copy(
+                    unhoverColor = MaterialTheme.colorScheme.outline,
+                    hoverColor = MaterialTheme.colorScheme.onSurface,
+                ),
+            )
+        }
+
+        CompactFunctionGroup(
+            title = strings.selectedLookUpAndShow,
+            modifier = Modifier.fillMaxWidth().padding(end = Density.SCROLLBAR_GUTTER),
+        ) {
             FlowRow(horizontalArrangement = Arrangement.spacedBy(Density.BUTTON_GAP)) {
                 Form.button(strings.selectedShowPathInAs, onClick = onShowPathInAirScout)
                 Form.button(strings.selectedShowOnMap, onClick = onShowOnMap)
@@ -202,8 +287,207 @@ fun SelectedStationPanel(
                 }
             }
         }
+    }
+}
 
+private const val DEFAULT_SELECTED_MESSAGE_FRACTION = 0.55
 
+@OptIn(ExperimentalLayoutApi::class)
+@Composable
+private fun SelectedStationActionGroups(
+    state: SelectedStationState,
+    activeBands: Set<Band>,
+) {
+    val strings = LocalStrings.current
+    val member = state.selected ?: return
+    val activeNotQrvBands = NotQrvBand.entries.filter { activeBands.contains(it.band) }
+    val notQrvContent: @Composable () -> Unit = {
+        FlowRow(
+            modifier = Modifier.fillMaxWidth(),
+            horizontalArrangement = Arrangement.spacedBy(Density.BUTTON_GAP),
+            verticalArrangement = Arrangement.spacedBy(Density.FIELD_GAP),
+        ) {
+            activeNotQrvBands.forEach { band ->
+                Form.toggle(band.label, state.isTaggedNotQrv(band)) {
+                    state.tagNotQrv(band, it)
+                }
+            }
+            Form.toggle(
+                strings.selectedNotQrvAll,
+                activeNotQrvBands.all { state.isTaggedNotQrv(it) },
+            ) {
+                state.tagNotQrvAll(it)
+            }
+        }
+    }
+    val skedContent: @Composable () -> Unit = {
+        SkedAlertControls(state, activeBands)
+    }
+
+    BoxWithConstraints(modifier = Modifier.fillMaxWidth()) {
+        if (maxWidth >= Density.SELECTED_ACTION_GROUPS_ROW_MIN_WIDTH) {
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.spacedBy(Density.BUTTON_GAP),
+                verticalAlignment = Alignment.Top,
+            ) {
+                CompactFunctionGroup(
+                    title = strings.selectedTagNotQrv(member.callSign.orEmpty()),
+                    modifier = Modifier.weight(0.35f).testTag(SELECTED_NOT_QRV_GROUP_TAG),
+                    content = notQrvContent,
+                )
+                CompactFunctionGroup(
+                    title = strings.selectedSked,
+                    modifier = Modifier.weight(0.65f).testTag(SELECTED_SKED_GROUP_TAG),
+                    content = skedContent,
+                )
+            }
+        } else {
+            Column(
+                modifier = Modifier.fillMaxWidth(),
+                verticalArrangement = Arrangement.spacedBy(Density.FIELD_GAP),
+            ) {
+                CompactFunctionGroup(
+                    title = strings.selectedTagNotQrv(member.callSign.orEmpty()),
+                    modifier = Modifier.fillMaxWidth().testTag(SELECTED_NOT_QRV_GROUP_TAG),
+                    content = notQrvContent,
+                )
+                CompactFunctionGroup(
+                    title = strings.selectedSked,
+                    modifier = Modifier.fillMaxWidth().testTag(SELECTED_SKED_GROUP_TAG),
+                    content = skedContent,
+                )
+            }
+        }
+    }
+}
+
+@Composable
+private fun CompactFunctionGroup(
+    title: String,
+    modifier: Modifier = Modifier,
+    content: @Composable () -> Unit,
+) {
+    Column(
+        modifier = modifier
+            .background(MaterialTheme.colorScheme.surfaceVariant.copy(alpha = 0.48f))
+            .border(Density.HAIRLINE, MaterialTheme.colorScheme.outlineVariant, Density.BUTTON_SHAPE)
+            .padding(3.dp),
+        verticalArrangement = Arrangement.spacedBy(Density.FIELD_GAP),
+    ) {
+        Text(
+            title,
+            style = MaterialTheme.typography.bodyMedium,
+            fontWeight = FontWeight.SemiBold,
+        )
+        content()
+    }
+}
+
+@OptIn(ExperimentalLayoutApi::class)
+@Composable
+private fun SkedAlertControls(state: SelectedStationState, activeBands: Set<Band>) {
+    val strings = LocalStrings.current
+    SkedEditorControls(
+        activeBands = activeBands,
+        minutes = state.skedMinutes,
+        onMinutesChanged = { state.skedMinutes = it },
+        band = state.skedBand,
+        onBandChanged = { state.skedBand = it },
+        mode = state.skedMode,
+        onModeChanged = { state.skedMode = it },
+        remindPm = state.remindPm,
+        onRemindPmChanged = { state.remindPm = it },
+        reminderOffsets = state.reminderOffsets,
+        onReminderOffsetsChanged = { state.reminderOffsets = it },
+        canCreate = state.canCreateSked,
+        onCreate = { state.createSked() },
+        additionalActions = {
+            Form.button(strings.selectedSkedFail, enabled = state.canCreateSked) { state.markSkedFail() }
+            Form.button(strings.selectedResetFail, enabled = state.canCreateSked) { state.resetSkedFail() }
+        },
+    )
+}
+
+/** Shared compact sked editor used by the station panel and the context popup. */
+@OptIn(ExperimentalLayoutApi::class)
+@Composable
+internal fun SkedEditorControls(
+    activeBands: Set<Band>,
+    minutes: Int,
+    onMinutesChanged: (Int) -> Unit,
+    band: Band?,
+    onBandChanged: (Band) -> Unit,
+    mode: String?,
+    onModeChanged: (String) -> Unit,
+    remindPm: Boolean,
+    onRemindPmChanged: (Boolean) -> Unit,
+    reminderOffsets: String,
+    onReminderOffsetsChanged: (String) -> Unit,
+    canCreate: Boolean,
+    onCreate: () -> Unit,
+    additionalActions: @Composable () -> Unit = {},
+) {
+    val strings = LocalStrings.current
+
+    FlowRow(
+        modifier = Modifier.fillMaxWidth(),
+        horizontalArrangement = Arrangement.spacedBy(Density.BUTTON_GAP),
+        verticalArrangement = Arrangement.spacedBy(Density.FIELD_GAP),
+    ) {
+        Form.inlineChoice(
+            label = strings.selectedSkedIn,
+            items = SelectedStationState.SKED_MINUTES,
+            selected = minutes,
+            describe = { it.toString() },
+            trailingText = strings.selectedSkedMinutesAt,
+            onSelect = onMinutesChanged,
+        )
+        Form.inlineChoice(
+            label = "",
+            items = skedBandOptions(activeBands),
+            selected = band,
+            describe = { it.prefix + " MHz" },
+            trailingText = strings.selectedSkedModeLink,
+            onSelect = onBandChanged,
+        )
+        Form.inlineChoice(
+            label = "",
+            items = SelectedStationState.SKED_MODES,
+            selected = mode,
+            describe = { it },
+            trailingText = ".",
+            onSelect = onModeChanged,
+        )
+        Row(
+            verticalAlignment = Alignment.CenterVertically,
+            modifier = Modifier.height(Density.CONTROL_HEIGHT),
+        ) {
+            CompactCheckbox(remindPm, onCheckedChange = onRemindPmChanged)
+            Text(
+                strings.selectedRemindPmIn,
+                style = compactControlTextStyle(),
+                modifier = Modifier.padding(start = 4.dp, end = 4.dp),
+            )
+            Form.inlineChoice(
+                label = "",
+                items = SelectedStationState.REMINDER_OFFSETS,
+                selected = reminderOffsets,
+                describe = { it },
+                enabled = remindPm,
+                trailingText = strings.selectedMinutes,
+                onSelect = onReminderOffsetsChanged,
+            )
+        }
+    }
+
+    FlowRow(
+        modifier = Modifier.fillMaxWidth(),
+        horizontalArrangement = Arrangement.spacedBy(Density.BUTTON_GAP),
+        verticalArrangement = Arrangement.spacedBy(Density.FIELD_GAP),
+    ) {
+        Form.button(strings.selectedCreateSked, enabled = canCreate, onClick = onCreate)
+        additionalActions()
     }
 }
 
@@ -214,26 +498,111 @@ fun SelectedStationPanel(
 @Composable
 fun TopPriorityBar(
     state: TopPriorityState,
+    newJoined: NewJoinedState? = null,
     onShowMore: () -> Unit,
     modifier: Modifier = Modifier,
 ) {
     val strings = LocalStrings.current
 
-    Row(
+    LaunchedEffect(newJoined) {
-        modifier = modifier.padding(2.dp),
+        while (newJoined != null) {
-        horizontalArrangement = Arrangement.spacedBy(Density.BUTTON_GAP),
+            delay(NEW_JOINED_REFRESH_INTERVAL_MILLIS)
-        verticalAlignment = Alignment.CenterVertically,
+            newJoined.refresh()
-    ) {
-        Text(strings.selectedPriority, style = MaterialTheme.typography.bodySmall)
-
-        state.entries.forEach { entry ->
-            Form.button(entry.label, onClick = entry.select)
         }
+    }
 
-        Form.button(strings.selectedMore, onClick = onShowMore)
+    BoxWithConstraints(modifier = modifier) {
+        val allJoinedEntries = newJoined?.entries.orEmpty()
+        val directCount = when {
+            maxWidth >= 520.dp -> NewJoinedState.SHOWN
+            maxWidth >= 450.dp -> 4
+            maxWidth >= 380.dp -> 3
+            maxWidth >= 310.dp -> 2
+            else -> 1
+        }
+        val joinedEntries = allJoinedEntries.take(directCount)
+        val overflow = allJoinedEntries.drop(directCount)
+
+        FlowRow(
+            modifier = Modifier.fillMaxWidth().padding(2.dp),
+            horizontalArrangement = Arrangement.spacedBy(Density.BUTTON_GAP),
+            verticalArrangement = Arrangement.spacedBy(2.dp),
+            itemVerticalAlignment = Alignment.CenterVertically,
+        ) {
+            if (joinedEntries.isNotEmpty()) {
+                CandidateGroup(Modifier.testTag(NEW_JOINED_GROUP_TAG)) {
+                    Text(strings.selectedNewJoined, style = MaterialTheme.typography.bodySmall)
+
+                    joinedEntries.forEach { entry ->
+                        Form.button(entry.label, horizontalPadding = 4.dp, onClick = entry::select)
+                    }
+
+                    if (overflow.isNotEmpty()) {
+                        NewJoinedOverflow(overflow)
+                    }
+                }
+            }
+
+            CandidateGroup(Modifier.testTag(PRIORITY_GROUP_TAG)) {
+                Text(strings.selectedPriority, style = MaterialTheme.typography.bodySmall)
+
+                state.entries.forEach { entry ->
+                    Form.button(entry.label, onClick = entry.select)
+                }
+
+                Form.button(strings.selectedMore, onClick = onShowMore)
+            }
+        }
     }
 }
 
+@Composable
+private fun CandidateGroup(modifier: Modifier = Modifier, content: @Composable () -> Unit) {
+    FlowRow(
+        modifier = modifier
+            .background(MaterialTheme.colorScheme.surfaceVariant.copy(alpha = 0.35f))
+            .border(Density.HAIRLINE, MaterialTheme.colorScheme.outlineVariant, Density.BUTTON_SHAPE)
+            .padding(2.dp),
+        horizontalArrangement = Arrangement.spacedBy(Density.BUTTON_GAP),
+        verticalArrangement = Arrangement.spacedBy(2.dp),
+        itemVerticalAlignment = Alignment.CenterVertically,
+    ) {
+        content()
+    }
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun NewJoinedOverflow(entries: List<NewJoinedEntry>) {
+    val strings = LocalStrings.current
+    var expanded by remember { mutableStateOf(false) }
+
+    Box {
+        Form.button(
+            strings.selectedMore,
+            modifier = Modifier.testTag(NEW_JOINED_MORE_TAG),
+            horizontalPadding = 4.dp,
+        ) { expanded = true }
+        CompositionLocalProvider(LocalMinimumInteractiveComponentSize provides 0.dp) {
+            DropdownMenu(expanded = expanded, onDismissRequest = { expanded = false }) {
+                entries.forEach { entry ->
+                    DropdownMenuItem(
+                        text = { Text(entry.label, style = compactControlTextStyle()) },
+                        onClick = {
+                            expanded = false
+                            entry.select()
+                        },
+                        contentPadding = PaddingValues(horizontal = 8.dp),
+                        modifier = Modifier.heightIn(min = Density.CONTROL_HEIGHT),
+                    )
+                }
+            }
+        }
+    }
+}
+
+private const val NEW_JOINED_REFRESH_INTERVAL_MILLIS = 1_000L
+
 
 /**
  * One of a set of mutually exclusive choices.
@@ -249,6 +618,7 @@ private fun RadioChoice(label: String, selected: Boolean, onSelect: () -> Unit)
         Row(
             modifier = Modifier
                 .selectable(selected = selected, onClick = onSelect)
+                .height(Density.CONTROL_HEIGHT)
                 .padding(end = Density.BUTTON_GAP),
             verticalAlignment = Alignment.CenterVertically,
         ) {

app-desktop/src/main/kotlin/kst4contest/view/compose/SelectedStationState.kt

@@ -5,6 +5,7 @@ import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.setValue
 import kst4contest.model.Band
 import kst4contest.model.ChatMember
+import kst4contest.model.ChatPreferences
 
 /**
  * The bands a station can be tagged as not being on, under the labels the panel shows.
@@ -39,7 +40,17 @@ enum class SelectedMessageFilter(val label: String) {
     PM_TO_ME("pm to me"),
     PM_TO_OTHER("pm to other"),
     PUBLIC("public msgs"),
-    NOTHING("nothing"),
+    NOTHING("nothing");
+
+    companion object {
+        @JvmStatic
+        fun fromPreferences(prefs: ChatPreferences): SelectedMessageFilter = when {
+            prefs.isGuiOptions_defaultFilterPmToMe -> PM_TO_ME
+            prefs.isGuiOptions_defaultFilterPmToOther -> PM_TO_OTHER
+            prefs.isGuiOptions_defaultFilterPublicMsgs -> PUBLIC
+            else -> NOTHING
+        }
+    }
 }
 
 /**
@@ -61,7 +72,7 @@ enum class SelectedMessageFilter(val label: String) {
  *        every draw, so the supplied lambda has to read Compose state for the button to
  *        follow a settings Apply
  */
-class SelectedStationState(
+class SelectedStationState @JvmOverloads constructor(
     private val propagateNotQrv: (ChatMember) -> Unit,
     private val createSked: (ChatMember, Int, Band?, String?) -> Boolean,
     private val markSkedFail: (ChatMember) -> Unit = { },
@@ -72,10 +83,14 @@ class SelectedStationState(
     private val turnAntennaTo: ((Double) -> Unit)? = null,
     private val turnSecondAntennaTo: ((Double) -> Unit)? = null,
     private val secondAntennaOffered: () -> Boolean = { false },
+    val stationSelection: StationSelectionState = StationSelectionState(),
 ) {
 
-    var selected: ChatMember? by mutableStateOf(null)
+    /** Shared sked action used by both the panel and isolated context-menu drafts. */
-        private set
+    var skedRequestSubmitter: ((SkedRequest) -> Boolean)? = null
+
+    val selected: ChatMember?
+        get() = stationSelection.selected
 
     /** Bumped on a tag so the panel redraws; the flags live on the station itself. */
     private var tagRevision: Int by mutableStateOf(0)
@@ -136,25 +151,36 @@ class SelectedStationState(
         if (heading.isFinite() && showsSecondAntenna) turnSecondAntennaTo?.invoke(heading)
     }
 
-    fun select(member: ChatMember?) {
+    @JvmOverloads
-        if (selected?.callSignRaw != member?.callSignRaw) {
+    fun select(
+        member: ChatMember?,
+        source: StationSelectionSource = StationSelectionSource.PROGRAMMATIC,
+    ) {
+        if (StationIdentity.of(selected) != StationIdentity.of(member)) {
             skedBand = member?.let { resolveDefaultSkedBand(it) }
         }
-        selected = member
+        stationSelection.select(member, source)
     }
 
     fun isTaggedNotQrv(band: NotQrvBand): Boolean {
         @Suppress("UNUSED_EXPRESSION") tagRevision
 
-        val member = selected ?: return false
+        return selected?.let { isTaggedNotQrv(it, band) } ?: false
+    }
 
+    fun isTaggedNotQrv(member: ChatMember, band: NotQrvBand): Boolean {
+        @Suppress("UNUSED_EXPRESSION") tagRevision
         return !band.read(member)
     }
 
     /** Tagged means not QRV, so the station's QRV flag goes the other way. */
     fun tagNotQrv(band: NotQrvBand, tagged: Boolean) {
         val member = selected ?: return
+        tagNotQrv(member, band, tagged)
+    }
 
+    /** Applies a context action to its fixed target instead of the current selection. */
+    fun tagNotQrv(member: ChatMember, band: NotQrvBand, tagged: Boolean) {
         band.write(member, !tagged)
         tagRevision++
         propagateNotQrv(member)
@@ -162,7 +188,10 @@ class SelectedStationState(
 
     fun tagNotQrvAll(tagged: Boolean) {
         val member = selected ?: return
+        tagNotQrvAll(member, tagged)
+    }
 
+    fun tagNotQrvAll(member: ChatMember, tagged: Boolean) {
         NotQrvBand.entries.forEach { it.write(member, !tagged) }
         tagRevision++
         propagateNotQrv(member)
@@ -172,9 +201,33 @@ class SelectedStationState(
     fun createSked(): Boolean {
         val member = selected ?: return false
 
-        return createSked(member, skedMinutes, skedBand, skedMode)
+        val request = SkedRequest(
+            target = member,
+            minutes = skedMinutes,
+            band = skedBand,
+            mode = skedMode,
+            remindPm = remindPm,
+            reminderOffsets = reminderOffsets,
+        )
+        return submitSked(request)
     }
 
+    /** Submits a fixed-target request through the shared application action. */
+    fun submitSked(request: SkedRequest): Boolean =
+        skedRequestSubmitter?.invoke(request)
+            ?: createSked(request.target, request.minutes, request.band, request.mode)
+
+    /** Copies the panel values into an isolated draft for a fixed target. */
+    fun createSkedDraft(target: ChatMember): SkedEditorState = SkedEditorState(
+        target = target,
+        minutes = skedMinutes,
+        band = skedBand ?: resolveDefaultSkedBand(target),
+        mode = skedMode,
+        remindPm = remindPm,
+        reminderOffsets = reminderOffsets,
+        submitter = ::submitSked,
+    )
+
     /**
      * Marks the path to this station as failed.
      *

app-desktop/src/main/kotlin/kst4contest/view/compose/SettingsTabs.kt

@@ -1,10 +1,7 @@
 package kst4contest.view.compose
 
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
-import androidx.compose.runtime.setValue
 import kst4contest.controller.ChatController
 import kst4contest.controller.ActiveOperatorProfile
 import kst4contest.controller.OperatorProfileManagementService
@@ -65,6 +62,9 @@ interface SettingsHost {
      */
     fun refreshSo2rState()
 
+    /** Pushes applied antenna-beam geometry into the open Compose map. */
+    fun refreshMapDisplaySettings()
+
     /** Rebuilds the Ctrl+1..Ctrl+0 context menus from the snippet list. */
     fun refreshTextSnippetContextMenusFromSettings()
 
@@ -151,6 +151,8 @@ fun buildSettingsTabs(
         applySecondCategory = { category -> controller.setChatCategorySecondChat(category) },
         connectionState = connectionState,
         applySecondRotator = { controller.reconfigureSecondRotator(); host.refreshSo2rState() },
+        refreshBeaconStatus = controller::refreshBeaconStatus,
+        applyMapDisplaySettings = host::refreshMapDisplaySettings,
     )
 
     val notificationState = NotificationTabState(
@@ -188,6 +190,8 @@ fun buildSettingsTabs(
         draft,
         validateBeaconTemplate = { template -> controller.validateBeaconTemplate(template) },
         restartBeaconTimer = { controller.restartBeaconTimer() },
+        setMainBeaconEnabled = controller::setMainBeaconEnabled,
+        setSecondBeaconEnabled = controller::setSecondBeaconEnabled,
         mainCategoryName = categoryName(controller.chatCategoryMain, kst4contest.view.i18n.CurrentStrings.get().settingsCategoryMainFallback),
         secondCategoryName = categoryName(controller.chatCategorySecondChat, kst4contest.view.i18n.CurrentStrings.get().settingsCategorySecondFallback),
     )
@@ -324,18 +328,11 @@ fun settingsButtons(
     host: SettingsHost,
     notices: SettingsNotices,
     draft: SettingsDraft,
+    connectionState: () -> On4KstConnectionState,
 ): @Composable (close: () -> Unit) -> Unit {
-    val barState = ConnectionBarState(controller.chatPreferences, controller)
+    val barState = ConnectionBarState(controller.chatPreferences, connectionState)
 
     return { close ->
-        /*
-         * The bar is rebuilt after every action so its labels and enabled states follow
-         * the session. The JavaFX bar was told by onConnectionStateChanged instead.
-         */
-        var revision by remember { mutableStateOf(0) }
-
-        @Suppress("UNUSED_EXPRESSION") revision
-
         ConnectionBar(
             state = barState,
             onConnect = {
@@ -343,14 +340,12 @@ fun settingsButtons(
                     val refusal = host.connectFromSettings()
                     if (refusal != null) notices.problem(refusal)
                 }
-                revision++
             },
             onSave = { applyAndSave(draft, notices, host::savePreferencesFromSettings) },
             onApplyAndClose = { if (applyChecked(draft, notices)) close() },
             onDisconnectAndCloseChat = host::disconnectAndCloseChatFromSettings,
             onDisconnectOnly = {
                 host.disconnectOnlyFromSettings()
-                revision++
             },
         )
     }

app-desktop/src/main/kotlin/kst4contest/view/compose/SkedEditorState.kt

@@ -0,0 +1,50 @@
+package kst4contest.view.compose
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import kst4contest.model.Band
+import kst4contest.model.ChatMember
+
+/** Complete immutable request handed to the shared sked creation action. */
+data class SkedRequest(
+    val target: ChatMember,
+    val minutes: Int,
+    val band: Band?,
+    val mode: String?,
+    val remindPm: Boolean,
+    val reminderOffsets: String,
+)
+
+/**
+ * Isolated editor draft used by the station-context popup.
+ *
+ * The target is captured when the popup opens. Later station selections therefore do
+ * not redirect a partially edited sked.
+ */
+class SkedEditorState(
+    val target: ChatMember,
+    minutes: Int,
+    band: Band?,
+    mode: String?,
+    remindPm: Boolean,
+    reminderOffsets: String,
+    private val submitter: (SkedRequest) -> Boolean,
+) {
+    var minutes by mutableStateOf(minutes)
+    var band by mutableStateOf(band)
+    var mode by mutableStateOf(mode)
+    var remindPm by mutableStateOf(remindPm)
+    var reminderOffsets by mutableStateOf(reminderOffsets)
+
+    fun request(): SkedRequest = SkedRequest(
+        target = target,
+        minutes = minutes,
+        band = band,
+        mode = mode,
+        remindPm = remindPm,
+        reminderOffsets = reminderOffsets,
+    )
+
+    fun submit(): Boolean = submitter(request())
+}

app-desktop/src/main/kotlin/kst4contest/view/compose/SplitterPane.kt

@@ -18,6 +18,7 @@ import androidx.compose.ui.input.pointer.pointerHoverIcon
 import androidx.compose.ui.input.pointer.pointerInput
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.dp
 import java.awt.Cursor
 
@@ -41,6 +42,7 @@ fun SplitterPane(
     orientation: SplitterOrientation,
     panes: List<@Composable () -> Unit>,
     modifier: Modifier = Modifier,
+    minimumPaneSizes: List<Dp> = emptyList(),
 ) {
     BoxWithConstraints(modifier) {
         val density = LocalDensity.current
@@ -55,7 +57,10 @@ fun SplitterPane(
          * cursor rather than drifting from it by a handle width per divider.
          */
         val totalPx = SplitterState.availableFor(fullPx, handlePx, state.paneCount)
-        val sizes = state.paneSizes(totalPx)
+        val minimumPaneSizesPx = FloatArray(minimumPaneSizes.size) { index ->
+            with(density) { minimumPaneSizes[index].toPx() }
+        }
+        val sizes = state.paneSizes(totalPx, minimumPaneSizesPx)
 
         val body: @Composable () -> Unit = {
             panes.forEachIndexed { index, pane ->
@@ -77,6 +82,7 @@ fun SplitterPane(
                         index = index,
                         orientation = orientation,
                         totalPx = totalPx,
+                        minimumPaneSizesPx = minimumPaneSizesPx,
                     )
                 }
             }
@@ -100,6 +106,7 @@ private fun SplitterHandle(
     index: Int,
     orientation: SplitterOrientation,
     totalPx: Float,
+    minimumPaneSizesPx: FloatArray,
 ) {
     val horizontal = orientation == SplitterOrientation.HORIZONTAL
     val cursor = if (horizontal) Cursor.E_RESIZE_CURSOR else Cursor.N_RESIZE_CURSOR
@@ -111,15 +118,20 @@ private fun SplitterHandle(
                 else Modifier.height(Density.COLUMN_HANDLE_WIDTH).fillMaxWidth(),
             )
             .pointerHoverIcon(PointerIcon(Cursor(cursor)))
-            .pointerInput(index, totalPx) {
+            .pointerInput(index, totalPx, minimumPaneSizesPx.contentHashCode()) {
                 detectDragGestures(
                     onDragEnd = { state.dragFinished() },
                     onDragCancel = { state.dragFinished() },
                 ) { _, dragAmount ->
                     if (totalPx <= 0f) return@detectDragGestures
                     val delta = if (horizontal) dragAmount.x else dragAmount.y
-                    val current = state.positions.getOrElse(index) { 0f }
+                    val current = state.dividerPosition(index, totalPx, minimumPaneSizesPx)
-                    state.drag(index, current + delta / totalPx, totalPx)
+                    state.drag(
+                        index = index,
+                        to = current + delta / totalPx,
+                        totalPx = totalPx,
+                        minimumPaneSizesPx = minimumPaneSizesPx,
+                    )
                 }
             },
         contentAlignment = Alignment.Center,

app-desktop/src/main/kotlin/kst4contest/view/compose/SplitterState.kt

@@ -39,9 +39,27 @@ class SplitterState(
      * @param to the wanted position as a fraction of the whole
      * @param totalPx the splitter's length, needed to turn the minimum into a fraction
      */
-    fun drag(index: Int, to: Float, totalPx: Float) {
+    fun drag(
+        index: Int,
+        to: Float,
+        totalPx: Float,
+        minimumPaneSizesPx: FloatArray = EMPTY_MINIMUMS,
+    ) {
         if (index !in 0 until dividerCount) return
 
+        if (minimumPaneSizesPx.isNotEmpty()) {
+            val minimums = scaledMinimums(totalPx, minimumPaneSizesPx)
+            val effective = effectiveDividerPositions(totalPx, minimumPaneSizesPx)
+            val lowerBound = (effective.getOrElse(index - 1) { 0f } + minimums[index]) / totalPx
+            val upperBound = (effective.getOrElse(index + 1) { totalPx } - minimums[index + 1]) / totalPx
+            livePositions[index] = if (lowerBound > upperBound) {
+                (lowerBound + upperBound) / 2f
+            } else {
+                to.coerceIn(lowerBound, upperBound)
+            }
+            return
+        }
+
         val minFraction = if (totalPx > 0f) minPanePx / totalPx else 0f
         val lowerBound = (if (index == 0) 0f else livePositions[index - 1]) + minFraction
         val upperBound = (if (index == dividerCount - 1) 1f else livePositions[index + 1]) - minFraction
@@ -64,18 +82,71 @@ class SplitterState(
     }
 
     /** The pane lengths for a given splitter length; they always add up to the whole. */
-    fun paneSizes(totalPx: Float): List<Float> {
+    fun paneSizes(totalPx: Float, minimumPaneSizesPx: FloatArray = EMPTY_MINIMUMS): List<Float> {
         if (paneCount <= 1) return listOf(totalPx)
         val edges = buildList {
             add(0f)
-            livePositions.forEach { add(it * totalPx) }
+            effectiveDividerPositions(totalPx, minimumPaneSizesPx).forEach { add(it) }
             add(totalPx)
         }
         return (0 until paneCount).map { edges[it + 1] - edges[it] }
     }
 
+    /** The position the pointer sees after pane-specific minimums have been applied. */
+    internal fun dividerPosition(
+        index: Int,
+        totalPx: Float,
+        minimumPaneSizesPx: FloatArray = EMPTY_MINIMUMS,
+    ): Float = effectiveDividerPositions(totalPx, minimumPaneSizesPx)
+        .getOrElse(index) { 0f } / totalPx.coerceAtLeast(1f)
+
+    private fun effectiveDividerPositions(
+        totalPx: Float,
+        minimumPaneSizesPx: FloatArray,
+    ): FloatArray {
+        if (minimumPaneSizesPx.isEmpty()) {
+            return FloatArray(dividerCount) { index -> livePositions[index] * totalPx }
+        }
+
+        val minimums = scaledMinimums(totalPx, minimumPaneSizesPx)
+        val effective = FloatArray(dividerCount)
+        var previous = 0f
+        repeat(dividerCount) { index ->
+            val lowerBound = previous + minimums[index]
+            var trailingMinimum = 0f
+            for (remainingIndex in index + 1 until paneCount) {
+                trailingMinimum += minimums[remainingIndex]
+            }
+            val upperBound = totalPx - trailingMinimum
+            val wanted = livePositions[index] * totalPx
+            // Scaling impossible minimums can leave the two bounds a few float ULPs
+            // apart. Treat that rounding-only empty range like drag() does instead of
+            // letting coerceIn throw during layout.
+            val position = if (lowerBound > upperBound) {
+                (lowerBound + upperBound) / 2f
+            } else {
+                wanted.coerceIn(lowerBound, upperBound)
+            }
+            effective[index] = position
+            previous = position
+        }
+        return effective
+    }
+
+    private fun scaledMinimums(totalPx: Float, minimumPaneSizesPx: FloatArray): FloatArray {
+        val minimums = FloatArray(paneCount) { index ->
+            minimumPaneSizesPx.getOrNull(index)?.coerceAtLeast(minPanePx) ?: minPanePx
+        }
+        val sum = minimums.sum()
+        if (sum <= totalPx || sum <= 0f) return minimums
+        val scale = totalPx.coerceAtLeast(0f) / sum
+        return FloatArray(paneCount) { index -> minimums[index] * scale }
+    }
+
     companion object {
 
+        private val EMPTY_MINIMUMS = FloatArray(0)
+
         /** Enough to still see a table header and grab the divider again. */
         const val DEFAULT_MIN_PANE_PX = 24f
 

app-desktop/src/main/kotlin/kst4contest/view/compose/StationColumns.kt

@@ -45,7 +45,14 @@ object StationColumns {
         formatBand: (ChatMember, kst4contest.model.Band, Boolean) -> String,
         activeBands: EnumSet<kst4contest.model.Band> = EnumSet.allOf(kst4contest.model.Band::class.java),
     ): List<DataColumn<ChatMember>> = buildList {
-        add(DataColumn(id = "callsign", title = { kst4contest.view.i18n.CurrentStrings.get().columnCallsign }, value = { it.callSign.orEmpty() }))
+        add(DataColumn(
+            id = "callsign",
+            title = { kst4contest.view.i18n.CurrentStrings.get().columnCallsign },
+            value = { it.callSign.orEmpty() },
+            comparator = compareBy(String.CASE_INSENSITIVE_ORDER) { member: ChatMember ->
+                member.callSign?.trim().orEmpty()
+            },
+        ))
         add(DataColumn(id = "name", title = { kst4contest.view.i18n.CurrentStrings.get().columnName }, value = { it.name.orEmpty() }))
         add(DataColumn(id = "qra", title = "QRA", value = { it.qra.orEmpty() }, weight = 0.8f))
         add(DataColumn(

app-desktop/src/main/kotlin/kst4contest/view/compose/StationContextMenu.kt

@@ -0,0 +1,314 @@
+package kst4contest.view.compose
+
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.heightIn
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.widthIn
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.DropdownMenuItem
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.LocalMinimumInteractiveComponentSize
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.MenuDefaults
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.testTag
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.IntOffset
+import androidx.compose.ui.unit.IntRect
+import androidx.compose.ui.unit.IntSize
+import androidx.compose.ui.unit.LayoutDirection
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.window.Popup
+import androidx.compose.ui.window.PopupPositionProvider
+import androidx.compose.ui.window.PopupProperties
+import kst4contest.model.Band
+import kst4contest.model.ChatMember
+import kst4contest.view.i18n.LocalStrings
+
+internal const val STATION_CONTEXT_MENU_TAG = "station-context-menu"
+internal const val STATION_CONTEXT_TARGET_CHOOSER_TAG = "station-context-target-chooser"
+internal const val STATION_SKED_POPUP_TAG = "station-sked-popup"
+
+private enum class StationContextPage {
+    ROOT,
+    SNIPPETS,
+    NOT_QRV,
+    WORKED,
+    REACHABILITY,
+}
+
+/** Shared station action popup used by the user list and the map. */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun StationContextOverlays(
+    menuState: StationContextMenuState,
+    mainWindowState: MainWindowState,
+    onShowMap: (() -> Unit)? = null,
+) {
+    val strings = LocalStrings.current
+    var page by remember { mutableStateOf(StationContextPage.ROOT) }
+    var skedDraft by remember { mutableStateOf<SkedEditorState?>(null) }
+    var skedPosition by remember { mutableStateOf(IntOffset.Zero) }
+
+    LaunchedEffect(menuState.candidates, menuState.target) {
+        page = StationContextPage.ROOT
+    }
+
+    if (menuState.isOpen) {
+        Popup(
+            popupPositionProvider = WindowPointPopupPositionProvider(menuState.position),
+            onDismissRequest = menuState::close,
+            properties = PopupProperties(focusable = true),
+        ) {
+            Surface(
+                modifier = Modifier.testTag(STATION_CONTEXT_MENU_TAG),
+                shape = MenuDefaults.shape,
+                color = MenuDefaults.containerColor,
+                tonalElevation = MenuDefaults.TonalElevation,
+                shadowElevation = MenuDefaults.ShadowElevation,
+            ) {
+                CompositionLocalProvider(LocalMinimumInteractiveComponentSize provides Dp.Unspecified) {
+                    Column(
+                        modifier = Modifier
+                            .widthIn(min = 190.dp, max = 360.dp)
+                            .verticalScroll(rememberScrollState())
+                            .padding(vertical = 4.dp),
+                    ) {
+                        val target = menuState.target
+                        if (target == null) {
+                            ContextHeading(
+                                strings.contextChooseStation,
+                                Modifier.testTag(STATION_CONTEXT_TARGET_CHOOSER_TAG),
+                            )
+                            menuState.candidates.forEach { candidate ->
+                                ContextItem(stationContextTargetLabel(candidate)) {
+                                    menuState.chooseTarget(candidate)
+                                }
+                            }
+                        } else {
+                            when (page) {
+                                StationContextPage.ROOT -> {
+                                    ContextSubmenu(strings.contextMessageSnippets) {
+                                        page = StationContextPage.SNIPPETS
+                                    }
+                                    ContextItem(strings.contextCreateSked) {
+                                        skedPosition = menuState.position
+                                        skedDraft = mainWindowState.selectedStation.createSkedDraft(target)
+                                        menuState.close()
+                                    }
+                                    ContextSeparator()
+                                    ContextSubmenu(strings.contextTagNotQrv) {
+                                        page = StationContextPage.NOT_QRV
+                                    }
+                                    ContextSubmenu(strings.contextMarkWorked) {
+                                        page = StationContextPage.WORKED
+                                    }
+                                    ContextSeparator()
+                                    ContextSubmenu(strings.contextCalculateReachability) {
+                                        page = StationContextPage.REACHABILITY
+                                    }
+                                }
+
+                                StationContextPage.SNIPPETS -> {
+                                    ContextBack { page = StationContextPage.ROOT }
+                                    mainWindowState.snippets.entries.forEach { snippet ->
+                                        ContextItem(snippet) {
+                                            mainWindowState.chatInput.appendSnippet(snippet)
+                                            menuState.close()
+                                        }
+                                    }
+                                }
+
+                                StationContextPage.NOT_QRV -> {
+                                    ContextBack { page = StationContextPage.ROOT }
+                                    NotQrvBand.entries
+                                        .filter { it.band in mainWindowState.activeBands }
+                                        .forEach { band ->
+                                            val tagged = mainWindowState.selectedStation
+                                                .isTaggedNotQrv(target, band)
+                                            ContextCheckItem(band.label, tagged) {
+                                                mainWindowState.selectedStation
+                                                    .tagNotQrv(target, band, !tagged)
+                                            }
+                                        }
+                                }
+
+                                StationContextPage.WORKED -> {
+                                    ContextBack { page = StationContextPage.ROOT }
+                                    mainWindowState.activeBands.sortedBy(Band::ordinal).forEach { band ->
+                                        val worked = target.isWorkedOn(band)
+                                        ContextCheckItem(band.displayLabel, worked, enabled = !worked) {
+                                            if (mainWindowState.markStationWorked?.invoke(target, band) == true) {
+                                                menuState.close()
+                                            }
+                                        }
+                                    }
+                                }
+
+                                StationContextPage.REACHABILITY -> {
+                                    ContextBack { page = StationContextPage.ROOT }
+                                    mainWindowState.activeBands.sortedBy(Band::ordinal).forEach { band ->
+                                        ContextItem(band.displayLabel) {
+                                            if (mainWindowState.mapReachability.calculate(target, band)) {
+                                                onShowMap?.invoke()
+                                                menuState.close()
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    skedDraft?.let { draft ->
+        Popup(
+            popupPositionProvider = WindowPointPopupPositionProvider(skedPosition),
+            onDismissRequest = { skedDraft = null },
+            properties = PopupProperties(focusable = true),
+        ) {
+            Surface(
+                modifier = Modifier
+                    .widthIn(min = 420.dp, max = 560.dp)
+                    .testTag(STATION_SKED_POPUP_TAG),
+                shape = MaterialTheme.shapes.small,
+                color = MaterialTheme.colorScheme.surface,
+                tonalElevation = 4.dp,
+                shadowElevation = 8.dp,
+            ) {
+                Column(
+                    modifier = Modifier.padding(8.dp),
+                ) {
+                    Text(
+                        strings.contextSkedTitle(draft.target.callSign.orEmpty()),
+                        style = MaterialTheme.typography.titleSmall,
+                        modifier = Modifier.padding(bottom = 4.dp),
+                    )
+                    SkedEditorControls(
+                        activeBands = mainWindowState.activeBands,
+                        minutes = draft.minutes,
+                        onMinutesChanged = { draft.minutes = it },
+                        band = draft.band,
+                        onBandChanged = { draft.band = it },
+                        mode = draft.mode,
+                        onModeChanged = { draft.mode = it },
+                        remindPm = draft.remindPm,
+                        onRemindPmChanged = { draft.remindPm = it },
+                        reminderOffsets = draft.reminderOffsets,
+                        onReminderOffsetsChanged = { draft.reminderOffsets = it },
+                        canCreate = draft.band != null,
+                        onCreate = {
+                            if (draft.submit()) skedDraft = null
+                        },
+                        additionalActions = {
+                            Form.button(strings.contextCancel) { skedDraft = null }
+                        },
+                    )
+                }
+            }
+        }
+    }
+}
+
+@Composable
+private fun ContextHeading(text: String, modifier: Modifier = Modifier) {
+    Text(
+        text = text,
+        style = MaterialTheme.typography.bodyMedium,
+        modifier = modifier.fillMaxWidth().padding(horizontal = 8.dp, vertical = 4.dp),
+    )
+}
+
+@Composable
+private fun ContextBack(onClick: () -> Unit) {
+    val strings = LocalStrings.current
+    ContextItem("‹ ${strings.contextBack}", onClick = onClick)
+    ContextSeparator()
+}
+
+@Composable
+private fun ContextSubmenu(text: String, onClick: () -> Unit) {
+    ContextItem("$text  ›", onClick = onClick)
+}
+
+@Composable
+private fun ContextCheckItem(
+    text: String,
+    checked: Boolean,
+    enabled: Boolean = true,
+    onClick: () -> Unit,
+) {
+    ContextItem((if (checked) "✓ " else "  ") + text, enabled, onClick)
+}
+
+@Composable
+private fun ContextItem(text: String, enabled: Boolean = true, onClick: () -> Unit) {
+    DropdownMenuItem(
+        text = { Text(text, style = compactControlTextStyle(), maxLines = 1) },
+        enabled = enabled,
+        onClick = onClick,
+        contentPadding = PaddingValues(horizontal = 8.dp),
+        modifier = Modifier.heightIn(min = Density.CONTROL_HEIGHT),
+    )
+}
+
+@Composable
+private fun ContextSeparator() {
+    HorizontalDivider(
+        thickness = Density.HAIRLINE,
+        color = MaterialTheme.colorScheme.outlineVariant,
+    )
+}
+
+internal fun stationContextTargetLabel(member: ChatMember): String {
+    val category = member.chatCategory
+    val categoryName = category?.getChatCategoryName(category.categoryNumber)
+        ?.takeIf { it.isNotBlank() }
+        ?: category?.categoryNumber?.toString().orEmpty()
+    return if (categoryName.isBlank()) member.callSign.orEmpty()
+    else "${member.callSign.orEmpty()} | $categoryName"
+}
+
+internal fun ChatMember.isWorkedOn(band: Band): Boolean = when (band) {
+    Band.B_50 -> isWorked50
+    Band.B_70 -> isWorked70
+    Band.B_144 -> isWorked144
+    Band.B_432 -> isWorked432
+    Band.B_1296 -> isWorked1240
+    Band.B_2320 -> isWorked2300
+    Band.B_3400 -> isWorked3400
+    Band.B_5760 -> isWorked5600
+    Band.B_10G -> isWorked10G
+    Band.B_24G -> isWorked24G
+}
+
+/** Window-relative popup position clamped to the visible window on every DPI scale. */
+internal data class WindowPointPopupPositionProvider(
+    val point: IntOffset,
+) : PopupPositionProvider {
+    override fun calculatePosition(
+        anchorBounds: IntRect,
+        windowSize: IntSize,
+        layoutDirection: LayoutDirection,
+        popupContentSize: IntSize,
+    ): IntOffset = IntOffset(
+        x = point.x.coerceIn(0, maxOf(0, windowSize.width - popupContentSize.width)),
+        y = point.y.coerceIn(0, maxOf(0, windowSize.height - popupContentSize.height)),
+    )
+}

app-desktop/src/main/kotlin/kst4contest/view/compose/StationContextMenuState.kt

@@ -0,0 +1,59 @@
+package kst4contest.view.compose
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.unit.IntOffset
+import kst4contest.model.ChatMember
+
+/** Current target and window-relative anchor of a station context menu. */
+class StationContextMenuState(
+    private val selectStation: (ChatMember, StationSelectionSource) -> Unit,
+) {
+    var position: IntOffset by mutableStateOf(IntOffset.Zero)
+        private set
+
+    var candidates: List<ChatMember> by mutableStateOf(emptyList())
+        private set
+
+    var target: ChatMember? by mutableStateOf(null)
+        private set
+
+    var source: StationSelectionSource by mutableStateOf(StationSelectionSource.PROGRAMMATIC)
+        private set
+
+    val isOpen: Boolean
+        get() = candidates.isNotEmpty()
+
+    fun open(
+        members: List<ChatMember>,
+        source: StationSelectionSource,
+        position: IntOffset,
+    ) {
+        val unique = members
+            .filter { StationIdentity.of(it) != null }
+            .distinctBy(StationIdentity::of)
+        if (unique.isEmpty()) {
+            close()
+            return
+        }
+
+        this.position = position
+        this.source = source
+        candidates = unique
+        target = unique.singleOrNull()
+        target?.let { selectStation(it, source) }
+    }
+
+    fun chooseTarget(member: ChatMember) {
+        val identity = StationIdentity.of(member) ?: return
+        val resolved = candidates.firstOrNull { StationIdentity.of(it) == identity } ?: return
+        target = resolved
+        selectStation(resolved, source)
+    }
+
+    fun close() {
+        candidates = emptyList()
+        target = null
+    }
+}

app-desktop/src/main/kotlin/kst4contest/view/compose/StationFilterBar.kt

@@ -3,49 +3,53 @@ package kst4contest.view.compose
 import kst4contest.view.i18n.LocalStrings
 import androidx.compose.foundation.background
 import androidx.compose.foundation.border
-import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.ExperimentalLayoutApi
 import androidx.compose.foundation.layout.FlowRow
 import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.height
-import androidx.compose.foundation.layout.heightIn
-import androidx.compose.foundation.layout.IntrinsicSize
 import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.width
-import androidx.compose.foundation.text.BasicTextField
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.testTag
-import androidx.compose.ui.graphics.luminance
 import androidx.compose.ui.unit.dp
 
+internal const val FILTER_DISTANCE_GROUP_TAG = "filter-distance-group"
+internal const val FILTER_DIRECTION_GROUP_TAG = "filter-direction-group"
+internal const val FILTER_STATION_GROUP_TAG = "filter-station-group"
+internal const val FILTER_WORKED_GROUP_TAG = "filter-worked-group"
+internal const val FILTER_PROPAGATION_GROUP_TAG = "filter-propagation-group"
+
 /**
  * The station filter bar above the station table.
  *
- * Laid out to match the JavaFX original: three tight rows of controls separated
+ * Compact surfaces keep related filters together while the outer flow rows still wrap
- * by thin vertical rules between logical groups.
+ * against the station panel's actual width.
  */
 @OptIn(ExperimentalLayoutApi::class)
 @Composable
 fun StationFilterBar(
     filters: StationFilterState,
     activeBands: Set<kst4contest.model.Band>,
+    reachability: ReachabilityState,
     onChanged: () -> Unit,
+    onQtfDirectionChanged: (Double) -> Unit = {},
+    onReset: (() -> Unit)? = null,
     modifier: Modifier = Modifier,
 ) {
     val strings = LocalStrings.current
 
     Column(
-        modifier = modifier.fillMaxWidth().padding(horizontal = 2.dp, vertical = 1.dp),
+        modifier = modifier
+            .fillMaxWidth()
+            .background(MaterialTheme.colorScheme.surfaceVariant.copy(alpha = 0.18f))
+            .border(Density.HAIRLINE, MaterialTheme.colorScheme.outlineVariant)
+            .padding(horizontal = 2.dp, vertical = 1.dp),
         verticalArrangement = Arrangement.spacedBy(1.dp),
     ) {
         /*
@@ -61,121 +65,6 @@ fun StationFilterBar(
             horizontalArrangement = Arrangement.spacedBy(4.dp),
             verticalArrangement = Arrangement.spacedBy(1.dp),
             itemVerticalAlignment = Alignment.CenterVertically,
-        ) {
-            // Reset filters
-            FilterButton(strings.filterReset, on = false, isAccent = true) {
-                filters.reset()
-                onChanged()
-            }
-
-            // QRB maximum + minimum (#21): together they make a range, so they stay one group
-            FilterGroup {
-                GroupSeparator()
-                FlowRow(
-                    horizontalArrangement = Arrangement.spacedBy(4.dp),
-                    verticalArrangement = Arrangement.spacedBy(1.dp),
-                    itemVerticalAlignment = Alignment.CenterVertically,
-                ) {
-                    FilterGroup {
-                        CompactCheckbox(
-                            checked = filters.maxQrbEnabled,
-                            onCheckedChange = {
-                                filters.maxQrbEnabled = it
-                                onChanged()
-                            },
-                        )
-                        Text(strings.filterShowOnlyQrb, style = MaterialTheme.typography.bodySmall)
-                        CompactTextField(
-                            value = if (filters.maxQrbKm.rem(1) == 0.0) filters.maxQrbKm.toInt().toString() else filters.maxQrbKm.toString(),
-                            onValueChange = {
-                                val parsed = parseQrbKm(it)
-                                if (parsed != null) {
-                                    filters.maxQrbKm = parsed
-                                    if (filters.maxQrbEnabled) onChanged()
-                                } else if (it.isEmpty()) {
-                                    filters.maxQrbKm = 0.0
-                                    if (filters.maxQrbEnabled) onChanged()
-                                }
-                            },
-                            modifier = Modifier.width(50.dp)
-                        )
-                    }
-                    FilterGroup {
-                        CompactCheckbox(
-                            checked = filters.minQrbEnabled,
-                            onCheckedChange = {
-                                filters.minQrbEnabled = it
-                                onChanged()
-                            },
-                        )
-                        Text(strings.filterShowOnlyQrbAbove, style = MaterialTheme.typography.bodySmall)
-                        CompactTextField(
-                            value = if (filters.minQrbKm.rem(1) == 0.0) filters.minQrbKm.toInt().toString() else filters.minQrbKm.toString(),
-                            onValueChange = {
-                                val parsed = parseQrbKm(it)
-                                if (parsed != null) {
-                                    filters.minQrbKm = parsed
-                                    if (filters.minQrbEnabled) onChanged()
-                                } else if (it.isEmpty()) {
-                                    filters.minQrbKm = 0.0
-                                    if (filters.minQrbEnabled) onChanged()
-                                }
-                            },
-                            modifier = Modifier.width(50.dp)
-                        )
-                    }
-                }
-            }
-
-            // QTF checkbox + field
-            FilterGroup {
-                GroupSeparator()
-                CompactCheckbox(
-                    checked = filters.qtfEnabled,
-                    onCheckedChange = {
-                        filters.qtfEnabled = it
-                        onChanged()
-                    },
-                )
-                Text(strings.filterShowOnlyQtf, style = MaterialTheme.typography.bodySmall)
-                CompactTextField(
-                    value = if (filters.qtfDegrees.rem(1) == 0.0) filters.qtfDegrees.toInt().toString() else filters.qtfDegrees.toString(),
-                    onValueChange = {
-                        val parsed = it.toDoubleOrNull()
-                        if (parsed != null) {
-                            filters.qtfDegrees = parsed
-                            filters.bearing = null
-                            if (filters.qtfEnabled) onChanged()
-                        } else if (it.isEmpty()) {
-                            filters.qtfDegrees = 0.0
-                            filters.bearing = null
-                            if (filters.qtfEnabled) onChanged()
-                        }
-                    },
-                    modifier = Modifier.width(50.dp)
-                )
-                Text("± BW/2", style = MaterialTheme.typography.bodySmall)
-            }
-
-            // Bearings
-            FlowRow(
-                horizontalArrangement = Arrangement.spacedBy(4.dp),
-                verticalArrangement = Arrangement.spacedBy(1.dp),
-            ) {
-                Bearing.entries.forEach { bearing ->
-                    FilterButton(bearing.name, on = filters.bearing == bearing) {
-                        filters.toggleBearing(bearing)
-                        onChanged()
-                    }
-                }
-            }
-        }
-
-        // ROW 2: Find | Hide worked: wkd 50 70 144 432 | Inactive stations | Only new grids
-        Row(
-            modifier = Modifier.fillMaxWidth().height(IntrinsicSize.Min),
-            horizontalArrangement = Arrangement.spacedBy(4.dp),
-            verticalAlignment = Alignment.CenterVertically,
         ) {
             CompactTextField(
                 value = filters.searchText,
@@ -187,100 +76,225 @@ fun StationFilterBar(
                 modifier = Modifier.width(90.dp),
             )
 
-            VerticalSeparator()
+            // Reset filters
-
+            FilterButton(strings.filterReset, on = false, isAccent = true) {
-            Text(strings.filterHideWorked, style = MaterialTheme.typography.bodySmall)
+                if (onReset != null) {
-            FilterButton("wkdany", on = filters.hideWorkedAny) {
+                    onReset()
-                filters.hideWorkedAny = !filters.hideWorkedAny
+                } else {
-                onChanged()
+                    filters.reset()
+                    onChanged()
+                }
             }
-            WorkedBandFilter.entries.forEach { band ->
+
-                if (band.modelBand in activeBands) {
+            // Distance and bearing-width controls form one functional surface.
-                    FilterButton(band.label, on = filters.isHideWorkedOn(band)) {
+            FilterGroupSurface(FILTER_DISTANCE_GROUP_TAG) {
-                        filters.setHideWorkedOn(band, !filters.isHideWorkedOn(band))
+                FilterGroup {
-                        onChanged()
+                    FlowRow(
+                        horizontalArrangement = Arrangement.spacedBy(4.dp),
+                        verticalArrangement = Arrangement.spacedBy(1.dp),
+                        itemVerticalAlignment = Alignment.CenterVertically,
+                    ) {
+                        FilterGroup {
+                            CompactCheckbox(
+                                checked = filters.maxQrbEnabled,
+                                onCheckedChange = {
+                                    filters.maxQrbEnabled = it
+                                    onChanged()
+                                },
+                            )
+                            Text(strings.filterShowOnlyQrb, style = compactControlTextStyle())
+                            CompactTextField(
+                                value = if (filters.maxQrbKm.rem(1) == 0.0) {
+                                    filters.maxQrbKm.toInt().toString()
+                                } else {
+                                    filters.maxQrbKm.toString()
+                                },
+                                onValueChange = {
+                                    val parsed = parseQrbKm(it)
+                                    if (parsed != null) {
+                                        filters.maxQrbKm = parsed
+                                        if (filters.maxQrbEnabled) onChanged()
+                                    } else if (it.isEmpty()) {
+                                        filters.maxQrbKm = 0.0
+                                        if (filters.maxQrbEnabled) onChanged()
+                                    }
+                                },
+                                modifier = Modifier.width(50.dp),
+                            )
+                        }
+                        FilterGroup {
+                            CompactCheckbox(
+                                checked = filters.minQrbEnabled,
+                                onCheckedChange = {
+                                    filters.minQrbEnabled = it
+                                    onChanged()
+                                },
+                            )
+                            Text(strings.filterShowOnlyQrbAbove, style = compactControlTextStyle())
+                            CompactTextField(
+                                value = if (filters.minQrbKm.rem(1) == 0.0) {
+                                    filters.minQrbKm.toInt().toString()
+                                } else {
+                                    filters.minQrbKm.toString()
+                                },
+                                onValueChange = {
+                                    val parsed = parseQrbKm(it)
+                                    if (parsed != null) {
+                                        filters.minQrbKm = parsed
+                                        if (filters.minQrbEnabled) onChanged()
+                                    } else if (it.isEmpty()) {
+                                        filters.minQrbKm = 0.0
+                                        if (filters.minQrbEnabled) onChanged()
+                                    }
+                                },
+                                modifier = Modifier.width(50.dp),
+                            )
+                        }
                     }
                 }
             }
 
-            VerticalSeparator()
+            FilterGroupSurface(FILTER_DIRECTION_GROUP_TAG) {
+                FilterGroup {
+                    CompactCheckbox(
+                        checked = filters.qtfEnabled,
+                        onCheckedChange = {
+                            filters.qtfEnabled = it
+                            onChanged()
+                        },
+                    )
+                    Text(strings.filterShowOnlyQtf, style = compactControlTextStyle())
+                    CompactTextField(
+                        value = if (filters.qtfDegrees.rem(1) == 0.0) {
+                            filters.qtfDegrees.toInt().toString()
+                        } else {
+                            filters.qtfDegrees.toString()
+                        },
+                        onValueChange = {
+                            val parsed = parseQtfDegrees(it)
+                            if (parsed != null) {
+                                filters.qtfDegrees = parsed
+                                filters.bearing = null
+                                onQtfDirectionChanged(parsed)
+                                if (filters.qtfEnabled) onChanged()
+                            } else if (it.isEmpty()) {
+                                filters.qtfDegrees = 0.0
+                                filters.bearing = null
+                                if (filters.qtfEnabled) onChanged()
+                            }
+                        },
+                        modifier = Modifier.width(50.dp),
+                    )
+                    Text("± BW/2", style = compactControlTextStyle())
+                }
 
-            FilterButton(strings.filterInactiveStations, on = filters.hideInactive) {
+                FlowRow(
-                filters.hideInactive = !filters.hideInactive
+                    horizontalArrangement = Arrangement.spacedBy(4.dp),
-                onChanged()
+                    verticalArrangement = Arrangement.spacedBy(1.dp),
+                ) {
+                    Bearing.entries.forEach { bearing ->
+                        FilterButton(
+                            bearing.name,
+                            on = filters.bearing == bearing,
+                            modifier = Modifier.width(Density.DIRECTION_BUTTON_WIDTH),
+                            horizontalPadding = Density.DIRECTION_BUTTON_HORIZONTAL_PADDING,
+                        ) {
+                            filters.toggleBearing(bearing)
+                            if (filters.bearing == bearing) {
+                                onQtfDirectionChanged(bearing.degrees)
+                            }
+                            onChanged()
+                        }
+                    }
+                }
             }
-            FilterButton(strings.filterOnlyNewGrids, on = filters.onlyNewGrids) {
-                filters.onlyNewGrids = !filters.onlyNewGrids
-                onChanged()
-            }
-        }
 
-        // ROW 3: Grid color | Tropo | New bands | AS next 5m
+            FilterGroupSurface(FILTER_STATION_GROUP_TAG) {
-        Row(
+                Text(strings.filterHide, style = compactControlTextStyle())
-            modifier = Modifier.fillMaxWidth().height(IntrinsicSize.Min),
+                FilterButton("wkdany", on = filters.hideWorkedAny) {
-            horizontalArrangement = Arrangement.spacedBy(4.dp),
+                    filters.hideWorkedAny = !filters.hideWorkedAny
-            verticalAlignment = Alignment.CenterVertically,
+                    onChanged()
-        ) {
+                }
-            FilterButton(strings.filterGridColour, on = filters.gridColouring) {
+                WorkedBandFilter.entries.forEach { band ->
-                filters.gridColouring = !filters.gridColouring
+                    if (band.modelBand in activeBands) {
+                        FilterButton(band.label, on = filters.isHideWorkedOn(band)) {
+                            filters.setHideWorkedOn(band, !filters.isHideWorkedOn(band))
+                            onChanged()
+                        }
+                    }
+                }
+                FilterButton(strings.filterInactiveStations, on = filters.hideInactive) {
+                    filters.hideInactive = !filters.hideInactive
+                    onChanged()
+                }
             }
-            FilterButton(strings.filterTropo, on = filters.tropoReachable) {
+
-                filters.tropoReachable = !filters.tropoReachable
+            FilterGroupSurface(FILTER_WORKED_GROUP_TAG) {
-                onChanged()
+                Text(strings.filterShow, style = compactControlTextStyle())
+                FilterButton(strings.filterOnlyNewGrids, on = filters.onlyNewGrids) {
+                    filters.onlyNewGrids = !filters.onlyNewGrids
+                    onChanged()
+                }
+                FilterButton(strings.filterGridColour, on = filters.gridColouring) {
+                    filters.gridColouring = !filters.gridColouring
+                }
+                FilterButton(strings.filterTropo, on = filters.tropoReachable) {
+                    filters.tropoReachable = !filters.tropoReachable
+                    onChanged()
+                }
+                FilterButton(strings.filterNewBands, on = filters.newBands) {
+                    filters.newBands = !filters.newBands
+                    onChanged()
+                }
+                FilterButton("AS next 5m", on = filters.airScoutNext5Min) {
+                    filters.airScoutNext5Min = !filters.airScoutNext5Min
+                    onChanged()
+                }
             }
-            FilterButton(strings.filterNewBands, on = filters.newBands) {
+
-                filters.newBands = !filters.newBands
+            FilterGroupSurface(FILTER_PROPAGATION_GROUP_TAG) {
-                onChanged()
+                FilterGroup {
-            }
+                    Text(strings.filterReachability, style = compactControlTextStyle())
-            FilterButton("AS next 5m", on = filters.airScoutNext5Min) {
+                    Form.inlineChoice(
-                filters.airScoutNext5Min = !filters.airScoutNext5Min
+                        label = "",
-                onChanged()
+                        items = reachability.options,
+                        selected = reachability.selectedOption,
+                        describe = ReachabilityBandOption::label,
+                        onSelect = { reachability.selectBand(it.band) },
+                    )
+                    Form.button(
+                        text = strings.filterCalcSelected,
+                        enabled = reachability.canCalculate,
+                        onClick = { reachability.calculateSelected() },
+                    )
+                }
             }
         }
     }
 }
 
 /**
- * A compact toggle button that does NOT use Material 3 Button (which enforces 40dp).
+ * A compact toggle using the same interaction states as every other desktop button.
- * Instead it is a plain clickable Box with border and background, matching the tiny
- * JavaFX filter buttons.
  */
 @Composable
-private fun FilterButton(label: String, on: Boolean, isAccent: Boolean = false, onClick: () -> Unit) {
+private fun FilterButton(
-    val palette = LocalJavaFxPalette.current
+    label: String,
-    val isDark = palette.windowBackground.luminance() < 0.5f
+    on: Boolean,
-
+    isAccent: Boolean = false,
-    val accentBrush = if (isDark) {
+    enabled: Boolean = true,
-        androidx.compose.ui.graphics.Brush.linearGradient(
+    modifier: Modifier = Modifier,
-            colors = listOf(Color(0xFF008000), Color(0xFF90EE90))
+    horizontalPadding: androidx.compose.ui.unit.Dp = 6.dp,
-        )
+    onClick: () -> Unit,
-    } else {
+) {
-        androidx.compose.ui.graphics.Brush.linearGradient(
+    Form.button(
-            colors = listOf(Color(0xFF00FFFF), Color(0xFFFF99FF))
+        text = label,
-        )
+        enabled = enabled,
-    }
+        accented = isAccent,
-
+        selected = on,
-    val bgModifier = if (isAccent) {
+        modifier = modifier,
-        Modifier.background(accentBrush, Density.BUTTON_SHAPE)
+        horizontalPadding = horizontalPadding,
-    } else {
+        onClick = onClick,
-        val bg = if (on) MaterialTheme.colorScheme.primary else Color.Transparent
+    )
-        Modifier.background(bg, Density.BUTTON_SHAPE)
-    }
-
-    val fg = if (isAccent) Color(0xFF395306) else if (on) MaterialTheme.colorScheme.onPrimary else MaterialTheme.colorScheme.onSurface
-    val borderColor = if (isAccent) Color.Transparent else if (on) MaterialTheme.colorScheme.primary else MaterialTheme.colorScheme.outline
-
-    Box(
-        modifier = Modifier
-            .heightIn(min = 20.dp)
-            .then(if (borderColor != Color.Transparent) Modifier.border(Density.HAIRLINE, borderColor, Density.BUTTON_SHAPE) else Modifier)
-            .then(bgModifier)
-            .clickable { onClick() }
-            .padding(horizontal = 6.dp, vertical = 2.dp),
-        contentAlignment = Alignment.Center,
-    ) {
-        Text(label, style = MaterialTheme.typography.bodySmall, color = fg, maxLines = 1)
-    }
 }
 
 /** Controls that belong together and move to the next line of a wrapping row as one. */
@@ -294,62 +308,20 @@ private fun FilterGroup(content: @Composable () -> Unit) {
     }
 }
 
-/**
+/** A compact surface that keeps related filters visually and spatially together. */
- * The group divider for a wrapping row. A fixed height, because [VerticalSeparator] fills
+@OptIn(ExperimentalLayoutApi::class)
- * the row's intrinsic height, which a line of a flow row does not offer.
- */
 @Composable
-private fun GroupSeparator() {
+private fun FilterGroupSurface(tag: String, content: @Composable () -> Unit) {
-    Box(
+    FlowRow(
         modifier = Modifier
-            .width(Density.HAIRLINE)
+            .testTag(tag)
-            .height(18.dp)
+            .background(MaterialTheme.colorScheme.surfaceVariant.copy(alpha = 0.42f))
-            .background(MaterialTheme.colorScheme.outline),
+            .border(Density.HAIRLINE, MaterialTheme.colorScheme.outlineVariant, Density.BUTTON_SHAPE)
-    )
+            .padding(2.dp),
-}
+        horizontalArrangement = Arrangement.spacedBy(4.dp),
-
+        verticalArrangement = Arrangement.spacedBy(2.dp),
-/** Thin vertical separator matching JavaFX's group dividers. */
+        itemVerticalAlignment = Alignment.CenterVertically,
-@Composable
+    ) {
-private fun VerticalSeparator() {
+        content()
-    Box(
+    }
-        modifier = Modifier
-            .width(Density.HAIRLINE)
-            .fillMaxHeight()
-            .background(MaterialTheme.colorScheme.outline),
-    )
-}
-
-
-@Composable
-private fun CompactTextField(
-    value: String,
-    onValueChange: (String) -> Unit,
-    placeholder: String = "",
-    modifier: Modifier = Modifier,
-) {
-    BasicTextField(
-        value = value,
-        onValueChange = onValueChange,
-        singleLine = true,
-        textStyle = MaterialTheme.typography.bodySmall.copy(color = MaterialTheme.colorScheme.onSurface),
-        decorationBox = { innerTextField ->
-            Box(
-                modifier = modifier
-                    .background(MaterialTheme.colorScheme.surfaceVariant, Density.BUTTON_SHAPE)
-                    .border(1.dp, MaterialTheme.colorScheme.outline, Density.BUTTON_SHAPE)
-                    .padding(horizontal = 4.dp, vertical = 2.dp),
-                contentAlignment = Alignment.CenterStart,
-            ) {
-                if (value.isEmpty() && placeholder.isNotEmpty()) {
-                    Text(
-                        placeholder,
-                        style = MaterialTheme.typography.bodySmall.copy(
-                            color = MaterialTheme.colorScheme.onSurfaceVariant,
-                        ),
-                    )
-                }
-                innerTextField()
-            }
-        },
-    )
 }

app-desktop/src/main/kotlin/kst4contest/view/compose/StationFilterState.kt

@@ -45,6 +45,10 @@ enum class StationFilter {
 internal fun parseQrbKm(text: String): Double? =
     text.toDoubleOrNull()?.takeIf { it.isFinite() && it >= 0.0 }
 
+/** A deliberate antenna/filter heading in the convention used by the QTF display. */
+internal fun parseQtfDegrees(text: String): Double? =
+    text.toDoubleOrNull()?.takeIf { it.isFinite() && it in 0.0..360.0 }
+
 /** The bands the "hide worked" row offers, under the labels the bar shows. */
 enum class WorkedBandFilter(val label: String, val filter: StationFilter, val modelBand: kst4contest.model.Band) {
     B_50("50", StationFilter.HIDE_WORKED_50, kst4contest.model.Band.B_50),

app-desktop/src/main/kotlin/kst4contest/view/compose/StationSelectionState.kt

@@ -0,0 +1,151 @@
+package kst4contest.view.compose
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import kst4contest.model.ChatMember
+import kst4contest.model.ChatMessage
+import java.util.Locale
+
+/** Full ON4KST station identity used across tables, messages and the map. */
+data class StationIdentity(
+    val callSign: String,
+    val categoryNumber: Int?,
+) {
+    companion object {
+        @JvmStatic
+        fun of(member: ChatMember?): StationIdentity? =
+            of(member?.callSign, member?.chatCategory?.categoryNumber)
+
+        @JvmStatic
+        fun of(callSignValue: String?, categoryNumber: Int?): StationIdentity? {
+            val callSign = callSignValue?.trim()?.uppercase(Locale.ROOT).orEmpty()
+            if (callSign.isBlank()) return null
+
+            return StationIdentity(callSign, categoryNumber)
+        }
+    }
+}
+
+/** Resolves the station navigated to by a directed-message row click. */
+object DirectedMessageStationTarget {
+
+    @JvmStatic
+    fun forMessage(message: ChatMessage?, ownCallSign: String?): StationIdentity? {
+        val senderCallSign = message?.sender?.callSign ?: return null
+        val ownCall = ownCallSign?.trim()?.uppercase(Locale.ROOT).orEmpty()
+        val senderCall = senderCallSign.trim().uppercase(Locale.ROOT)
+        val targetCall = if (senderCall == ownCall) {
+            message.receiver?.callSign ?: receiverFromPayload(message.messageText)
+        } else {
+            senderCallSign
+        }
+
+        return StationIdentity.of(targetCall, message.chatCategory?.categoryNumber)
+    }
+
+    private fun receiverFromPayload(messageText: String?): String? {
+        if (messageText == null || !messageText.startsWith('(')) return null
+        val closing = messageText.indexOf(')')
+        return if (closing > 1) messageText.substring(1, closing).trim() else null
+    }
+}
+
+/** Where an explicit station selection came from. */
+enum class StationSelectionSource {
+    STATION_TABLE,
+    STATION_CONTEXT_MENU,
+    DIRECTED_MESSAGE,
+    PUBLIC_MESSAGE,
+    QSO_OF_THE_OTHER,
+    MAP,
+    MAP_CONTEXT_MENU,
+    PRIORITY,
+    NEW_JOINED,
+    TIMELINE,
+    RESET_VIEW,
+    PROGRAMMATIC,
+}
+
+/**
+ * Canonical station selection shared by the station table and detail views.
+ *
+ * Data refreshes reconcile the selected instance without moving the table. Explicit
+ * user navigation increments [scrollRequestRevision], even when the identity is the
+ * same as before.
+ */
+class StationSelectionState : TableSelectionModel<ChatMember> {
+
+    private var current: ChatMember? by mutableStateOf(null)
+
+    override val selected: ChatMember?
+        get() = current
+
+    override var selectionRevision: Long by mutableStateOf(0L)
+        private set
+
+    override var scrollRequestRevision: Long by mutableStateOf(0L)
+        private set
+
+    var lastSource: StationSelectionSource by mutableStateOf(StationSelectionSource.PROGRAMMATIC)
+        private set
+
+    /** Changes only for deliberate station choices, including repeated choices. */
+    var explicitSelectionRevision: Long by mutableStateOf(0L)
+        private set
+
+    /** Receives deliberate station choices without observing roster reconciliation. */
+    internal var explicitSelectionListener: ((ChatMember?, StationSelectionSource) -> Unit)? = null
+
+    val identity: StationIdentity?
+        get() = StationIdentity.of(current)
+
+    override fun select(row: ChatMember?) {
+        select(row, StationSelectionSource.STATION_TABLE)
+    }
+
+    fun select(row: ChatMember?, source: StationSelectionSource) {
+        current = row
+        lastSource = source
+        selectionRevision++
+        if (source.isExplicitSelection()) {
+            explicitSelectionRevision++
+            explicitSelectionListener?.invoke(row, source)
+        }
+        if (row != null && source.requestsStationTableScroll()) {
+            scrollRequestRevision++
+        }
+    }
+
+    override fun reconcile(row: ChatMember?) {
+        current = row
+        selectionRevision++
+    }
+
+    override fun requestScroll() {
+        if (current != null) {
+            scrollRequestRevision++
+        }
+    }
+}
+
+private fun StationSelectionSource.isExplicitSelection(): Boolean = when (this) {
+    StationSelectionSource.PROGRAMMATIC -> false
+    else -> true
+}
+
+private fun StationSelectionSource.requestsStationTableScroll(): Boolean = when (this) {
+    StationSelectionSource.STATION_TABLE,
+    StationSelectionSource.STATION_CONTEXT_MENU,
+    StationSelectionSource.RESET_VIEW,
+    StationSelectionSource.PROGRAMMATIC -> false
+
+    StationSelectionSource.DIRECTED_MESSAGE,
+    StationSelectionSource.PUBLIC_MESSAGE,
+    StationSelectionSource.QSO_OF_THE_OTHER,
+    StationSelectionSource.MAP,
+    StationSelectionSource.MAP_CONTEXT_MENU,
+    StationSelectionSource.PRIORITY,
+    StationSelectionSource.NEW_JOINED,
+    StationSelectionSource.TIMELINE -> true
+}

app-desktop/src/main/kotlin/kst4contest/view/compose/StatusBar.kt

@@ -7,6 +7,7 @@ import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.TooltipArea
 import androidx.compose.foundation.background
 import androidx.compose.foundation.border
+import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.ExperimentalLayoutApi
@@ -25,6 +26,7 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.alpha
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.semantics.Role
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
@@ -39,11 +41,9 @@ import kst4contest.controller.On4KstConnectionState
  * only the indicators are left here — which is also what finally makes the bar wrap
  * properly on a narrow window instead of pushing the badges out of sight.
  *
- * Nothing in this bar is clickable. The three indicators were mouse-transparent and
+ * The connection and notice indicators remain non-clickable. A background-thread status is
- * non-focusable in JavaFX and stay that way: the operator is typing into the chat, and a
+ * actionable only when the application explicitly registers an action for that source; the
- * status badge must never take the keyboard. The background-thread buttons were ordinary
+ * beacon uses this for its quick switch, while every other worker remains a plain label.
- * focusable Buttons there, with no action attached — they are drawn as plain labels here,
- * which is what they always behaved like.
  */
 @OptIn(ExperimentalLayoutApi::class)
 @Composable
@@ -206,10 +206,16 @@ private fun ThreadStatusButtonView(button: ThreadStatusButton) {
     val foreground = if (button.highlighted) scheme.onPrimary else scheme.onSurfaceVariant
 
     TooltipArea(tooltip = { TooltipCard(button.tooltip) }) {
+        val actionModifier = if (button.hasAction) {
+            Modifier.clickable(role = Role.Button) { button.activate() }
+        } else {
+            Modifier
+        }
         Box(
             modifier = Modifier
                 .defaultMinSize(minHeight = 22.dp)
                 .background(background, NOTICE_SHAPE)
+                .then(actionModifier)
                 .padding(NOTICE_PADDING),
             contentAlignment = Alignment.Center,
         ) {

app-desktop/src/main/kotlin/kst4contest/view/compose/StatusIndicatorState.kt

@@ -176,20 +176,34 @@ object StatusIndicators {
 class ThreadStatusButtons {
 
     private val bySource = LinkedHashMap<String, ThreadStatusButton>()
+    private val actions = LinkedHashMap<String, () -> Unit>()
+    private val statusProviders = LinkedHashMap<String, () -> ThreadStateMessage>()
     private val ordered = mutableStateListOf<ThreadStatusButton>()
 
     val buttons: List<ThreadStatusButton> get() = ordered
 
     fun update(sourceName: String, message: ThreadStateMessage) {
+        val effectiveMessage = statusProviders[sourceName]?.invoke() ?: message
         val button = bySource.getOrPut(sourceName) {
-            ThreadStatusButton(sourceName).also { ordered.add(it) }
+            ThreadStatusButton(sourceName, actions[sourceName]).also { ordered.add(it) }
         }
         button.report(
-            label = "$sourceName: ${message.runningInformationTextDescription}",
+            label = "$sourceName: ${effectiveMessage.runningInformationTextDescription}",
-            tooltip = message.runningInformation.orEmpty(),
+            tooltip = effectiveMessage.runningInformation.orEmpty(),
         )
     }
 
+    /** Gives one status source an explicit action without changing any other source. */
+    fun registerAction(sourceName: String, action: () -> Unit) {
+        actions[sourceName] = action
+        bySource[sourceName]?.setAction(action)
+    }
+
+    /** Resolves a status only when its queued UI update is actually applied. */
+    fun registerStatusProvider(sourceName: String, provider: () -> ThreadStateMessage) {
+        statusProviders[sourceName] = provider
+    }
+
     companion object {
         /** How long the flash stays on; JavaFX used a 0.2 s PauseTransition. */
         const val HIGHLIGHT_MILLIS = 200L
@@ -197,7 +211,10 @@ class ThreadStatusButtons {
 }
 
 /** One background thread's button. */
-class ThreadStatusButton(val sourceName: String) {
+class ThreadStatusButton(
+    val sourceName: String,
+    initialAction: (() -> Unit)? = null,
+) {
 
     var label: String by mutableStateOf(sourceName)
         private set
@@ -212,6 +229,12 @@ class ThreadStatusButton(val sourceName: String) {
     var revision: Int by mutableStateOf(0)
         private set
 
+    var action: (() -> Unit)? by mutableStateOf(initialAction)
+        private set
+
+    val hasAction: Boolean
+        get() = action != null
+
     internal fun report(label: String, tooltip: String) {
         this.label = label
         this.tooltip = tooltip
@@ -222,4 +245,15 @@ class ThreadStatusButton(val sourceName: String) {
     fun clearHighlight() {
         highlighted = false
     }
+
+    internal fun setAction(action: () -> Unit) {
+        this.action = action
+    }
+
+    /** Runs the registered action and reports whether this status is actionable. */
+    fun activate(): Boolean {
+        val current = action ?: return false
+        current()
+        return true
+    }
 }

app-desktop/src/main/kotlin/kst4contest/view/compose/TimelineState.kt

@@ -49,6 +49,23 @@ data class TimelineCandidate(
     val tooltipText: String?,
 )
 
+/** The four candidate groups produced for every minute bucket, in display order. */
+enum class TimelineLane(val index: Int) {
+    IN_BEAM_1(0),
+    IN_BEAM_2(1),
+    PRIORITY_1(2),
+    PRIORITY_2(3);
+
+    companion object {
+        fun forIndex(index: Int): TimelineLane = entries[index.coerceIn(0, entries.lastIndex)]
+    }
+}
+
+data class TimelineTick(
+    val minutes: Int,
+    val x: Float,
+)
+
 /**
  * Where things sit on the strip.
  *
@@ -67,27 +84,27 @@ object TimelineGeometry {
      * is why the candidate labels and the sked labels landed on top of each other. The
      * lanes below are laid out for the real height.
      */
-    const val HEIGHT: Float = 80f
+    const val HEIGHT: Float = 104f
 
     /** The time axis, with the candidate lanes above it and the skeds below. */
-    const val AXIS_Y: Float = 44f
+    const val AXIS_Y: Float = 70f
+    const val TICK_LABEL_Y: Float = 72f
 
     /** Candidates keep further from the edges than skeds do, because their labels are wider. */
     const val CANDIDATE_MARGIN: Float = 30f
     const val SKED_MARGIN: Float = 10f
 
     const val LANE_BASE_Y: Float = 2f
-    const val LANE_HEIGHT: Float = 20f
+    const val LANE_HEIGHT: Float = 16f
 
     /**
-     * How many candidate lanes fit above the axis. The producer keeps at most two
+     * How many candidate lanes the producer defines: two in-beam choices followed by
-     * candidates per minute, so this is a guard rather than a limit in practice: a third
+     * two global priority choices.
-     * lane shares the second one instead of being drawn across the axis.
      */
-    const val LANE_COUNT: Int = 2
+    const val LANE_COUNT: Int = 4
 
     /** Skeds get their own lane below the axis, which is what frees the labels. */
-    const val SKED_Y: Float = 52f
+    const val SKED_Y: Float = 86f
 
     const val DEFAULT_BEAM_WIDTH_DEG: Double = 50.0
 
@@ -124,6 +141,23 @@ object TimelineGeometry {
 
     fun laneY(laneIndex: Int): Float =
         LANE_BASE_Y + LANE_HEIGHT * laneIndex.coerceIn(0, LANE_COUNT - 1)
+
+    /**
+     * Relative minute ticks for the current preview window. Five-minute ticks are used
+     * whenever their labels fit; compact layouts increase the interval instead of
+     * drawing overlapping text.
+     */
+    fun minuteTicks(axisWidth: Float, minimumLabelSpacing: Float): List<TimelineTick> {
+        if (axisWidth <= 0f) return emptyList()
+
+        val previewMinutes = (PREVIEW_MILLIS / 60_000L).toInt()
+        val interval = listOf(5, 10, 15, previewMinutes).first { minutes ->
+            axisWidth * minutes / previewMinutes >= minimumLabelSpacing
+        }
+        return (0..previewMinutes step interval).map { minutes ->
+            TimelineTick(minutes, axisWidth * minutes / previewMinutes)
+        }
+    }
 }
 
 /**

app-desktop/src/main/kotlin/kst4contest/view/compose/TimelineView.kt

@@ -11,6 +11,7 @@ import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.offset
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
@@ -34,6 +35,7 @@ import androidx.compose.ui.unit.IntOffset
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import kst4contest.model.ContestSked
+import kst4contest.view.i18n.LocalStrings
 import kotlin.math.roundToInt
 
 /** The strip is read like a radar screen, so it stays dark in both designs. */
@@ -47,6 +49,8 @@ private val MARKER_SIZE = 12.dp
 private val LABEL_GAP = 4.dp
 private val CHIP_SHAPE = RoundedCornerShape(6.dp)
 private val CHIP_BACKGROUND = Color(0xA6000000)
+private val LANE_LABEL_WIDTH = 68.dp
+private val AXIS_LABEL_PADDING = 6.dp
 
 /**
  * The strip above the send field: what is coming in the next half hour.
@@ -82,6 +86,7 @@ fun TimelineView(
 
     val density = LocalDensity.current
     val measurer = rememberTextMeasurer()
+    val strings = LocalStrings.current
 
     BoxWithConstraints(
         modifier
@@ -89,17 +94,60 @@ fun TimelineView(
             .background(STRIP_BACKGROUND),
     ) {
         val widthPx = with(density) { maxWidth.toPx() }
+        val labelGutterPx = with(density) { LANE_LABEL_WIDTH.toPx() }.coerceAtMost(widthPx)
+        val axisWidthPx = (widthPx - labelGutterPx).coerceAtLeast(0f)
         val axisY = with(density) { TimelineGeometry.AXIS_Y.dp.toPx() }
         val candidateMargin = with(density) { TimelineGeometry.CANDIDATE_MARGIN.dp.toPx() }
         val skedMargin = with(density) { TimelineGeometry.SKED_MARGIN.dp.toPx() }
+        val tickLabels = TimelineGeometry.minuteTicks(
+            axisWidth = axisWidthPx,
+            minimumLabelSpacing = measurer.measure("+30 ${strings.timelineMinuteSuffix}", AXIS_TEXT_STYLE)
+                .size.width.toFloat() + with(density) { AXIS_LABEL_PADDING.toPx() },
+        ).map { tick ->
+            tick to if (tick.minutes == 0) {
+                "0 ${strings.timelineMinuteSuffix}"
+            } else {
+                "+${tick.minutes} ${strings.timelineMinuteSuffix}"
+            }
+        }
 
         Canvas(Modifier.fillMaxSize()) {
-            drawLine(AXIS_COLOR, Offset(0f, axisY), Offset(size.width, axisY))
+            drawLine(AXIS_COLOR, Offset(labelGutterPx, axisY), Offset(size.width, axisY))
+            tickLabels.forEach { (tick, _) ->
+                val x = labelGutterPx + tick.x
+                drawLine(AXIS_COLOR, Offset(x, axisY - 2.dp.toPx()), Offset(x, axisY + 3.dp.toPx()))
+            }
+        }
+
+        val laneLabels = listOf(
+            strings.timelineInBeam1,
+            strings.timelineInBeam2,
+            strings.timelinePriority1,
+            strings.timelinePriority2,
+        )
+        laneLabels.forEachIndexed { index, label ->
+            TimelineAxisLabel(label, TimelineGeometry.laneY(index).dp)
+        }
+        TimelineAxisLabel(strings.timelineSkeds, TimelineGeometry.SKED_Y.dp)
+
+        tickLabels.forEach { (tick, label) ->
+            val labelWidthPx = measurer.measure(label, AXIS_TEXT_STYLE).size.width.toFloat()
+            val x = (labelGutterPx + tick.x - labelWidthPx / 2f)
+                .coerceIn(labelGutterPx, (widthPx - labelWidthPx).coerceAtLeast(labelGutterPx))
+            Text(
+                text = label,
+                modifier = Modifier.offset {
+                    IntOffset(x.roundToInt(), with(density) { TimelineGeometry.TICK_LABEL_Y.dp.toPx() }.roundToInt())
+                },
+                style = AXIS_TEXT_STYLE,
+                maxLines = 1,
+            )
         }
 
         // The candidate lanes, above the axis.
         state.candidates.forEach { candidate ->
-            val x = TimelineGeometry.xFor(candidate.timeUntilMs, widthPx, candidateMargin)
+            val x = TimelineGeometry.xFor(candidate.timeUntilMs, axisWidthPx, candidateMargin)
+                ?.plus(labelGutterPx)
                 ?: return@forEach
 
             TimelineMarker(
@@ -120,7 +168,8 @@ fun TimelineView(
         // above it, which is why their labels sat on top of the candidates'.
         val now = nowMillis.value
         state.skeds.forEach { sked ->
-            val x = TimelineGeometry.xFor(sked.skedTimeEpoch - now, widthPx, skedMargin)
+            val x = TimelineGeometry.xFor(sked.skedTimeEpoch - now, axisWidthPx, skedMargin)
+                ?.plus(labelGutterPx)
                 ?: return@forEach
 
             TimelineMarker(
@@ -157,6 +206,23 @@ private val CHIP_TEXT_STYLE = TextStyle(
     fontWeight = FontWeight.Bold,
 )
 
+private val AXIS_TEXT_STYLE = TextStyle(
+    color = Color(0xFFB8B8B8),
+    fontSize = 8.sp,
+)
+
+@Composable
+private fun TimelineAxisLabel(text: String, top: Dp) {
+    Text(
+        text = text,
+        modifier = Modifier
+            .offset(x = 4.dp, y = top)
+            .width(LANE_LABEL_WIDTH - 8.dp),
+        style = AXIS_TEXT_STYLE,
+        maxLines = 1,
+    )
+}
+
 /**
  * One marker: the symbol on the time axis and its callsign beside it.
  *

app-desktop/src/main/kotlin/kst4contest/view/compose/map/ComposeStationMap.kt

@@ -12,6 +12,7 @@ import androidx.compose.runtime.remember
 import androidx.compose.runtime.snapshotFlow
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.ExperimentalComposeUiApi
 import androidx.compose.ui.draw.clipToBounds
 import androidx.compose.ui.layout.onSizeChanged
 import androidx.compose.ui.geometry.Offset
@@ -24,7 +25,11 @@ import androidx.compose.ui.graphics.drawscope.Fill
 import androidx.compose.ui.graphics.drawscope.Stroke
 import androidx.compose.ui.graphics.toComposeImageBitmap
 import androidx.compose.ui.input.pointer.PointerEventType
+import androidx.compose.ui.input.pointer.isSecondaryPressed
+import androidx.compose.ui.input.pointer.onPointerEvent
 import androidx.compose.ui.input.pointer.pointerInput
+import androidx.compose.ui.layout.LayoutCoordinates
+import androidx.compose.ui.layout.onGloballyPositioned
 import androidx.compose.ui.text.TextLayoutResult
 import androidx.compose.ui.text.TextMeasurer
 import androidx.compose.ui.text.TextStyle
@@ -50,6 +55,7 @@ import kotlin.math.ceil
 import kotlin.math.floor
 import kotlin.math.log2
 import kotlin.math.sign
+import kotlin.math.roundToInt
 
 /**
  * Where the map is looking. Compose state, so a pan or a zoom reaches the screen.
@@ -94,6 +100,7 @@ class MapState(
  * any zoom with a fraction, the antenna beam did not start where the map said home was.
  * Neither failure is possible here, because nothing is scaled.
  */
+@OptIn(ExperimentalComposeUiApi::class)
 @Composable
 fun ComposeStationMap(
     markers: List<MapCallsignRawSnapshot>,
@@ -105,8 +112,15 @@ fun ComposeStationMap(
     antennaAzimuthDeg: Double,
     antennaBeamWidthDeg: Double,
     maxQrbKm: Double,
+    selectedTarget: MapCallsignRawSnapshot? = markers.firstOrNull {
+        it.callSignRaw() == selectedMarkerCallsign
+    },
+    spatialFilterOverlay: SpatialFilterOverlayState? = null,
     onMarkerClicked: ((MapCallsignRawSnapshot) -> Unit)?,
+    onMarkerContextRequested: ((List<MapCallsignRawSnapshot>, IntOffset) -> Unit)? = null,
+    workedGrossFields: Set<String> = emptySet(),
     darkMode: Boolean = true,
+    onCanvasSizeChanged: (Size) -> Unit = { },
     modifier: Modifier = Modifier,
 ) {
     val imageCache = remember { TileBitmapCache() }
@@ -122,6 +136,7 @@ fun ComposeStationMap(
      * wrongly grouped markers whenever the window is resized.
      */
     var canvasSize by remember { mutableStateOf(Size.Zero) }
+    var canvasCoordinates by remember { mutableStateOf<LayoutCoordinates?>(null) }
 
     /* Bumped when a tile arrives, which is what asks for the frame that shows it. */
     var tileRevision by remember { mutableStateOf(0) }
@@ -137,6 +152,13 @@ fun ComposeStationMap(
      * one linear pass over a few hundred markers.
      */
     val home = remember(ownLocator6) { homePosition(ownLocator6) }
+    val selectedTargetOutsideMarkers by remember(markers, selectedTarget) {
+        derivedStateOf {
+            selectedTarget?.takeIf { target ->
+                target.hasUsablePosition() && markers.none { it.callSignRaw() == target.callSignRaw() }
+            }
+        }
+    }
     val clusterResult by remember(markers, groupingEnabled, canvasSize) {
         derivedStateOf {
             StationMapClusterer.cluster(
@@ -195,7 +217,53 @@ fun ComposeStationMap(
     Canvas(
         modifier = modifier
             .clipToBounds()
-            .onSizeChanged { canvasSize = Size(it.width.toFloat(), it.height.toFloat()) }
+            .onSizeChanged {
+                canvasSize = Size(it.width.toFloat(), it.height.toFloat())
+                onCanvasSizeChanged(canvasSize)
+            }
+            .onGloballyPositioned { canvasCoordinates = it }
+            .onPointerEvent(PointerEventType.Press) { event ->
+                if (event.buttons.isSecondaryPressed) {
+                    val local = event.changes.firstOrNull()?.position ?: return@onPointerEvent
+                    val viewport = mapState.viewportFor(canvasSize.width, canvasSize.height)
+                    val result = StationMapClusterer.cluster(markers, viewport, groupingEnabled)
+                    val selectedOutside = selectedTargetOutsideMarkers?.takeIf { marker ->
+                        within(
+                            local,
+                            viewport.screenXWrapped(marker.longitudeDeg()).toFloat(),
+                            viewport.screenY(marker.latitudeDeg()).toFloat(),
+                            MARKER_HIT_RADIUS_PX,
+                        )
+                    }
+                    val cluster = result.clusters().firstOrNull { candidate ->
+                        within(
+                            local,
+                            viewport.screenXWrapped(candidate.centerLon).toFloat(),
+                            viewport.screenY(candidate.centerLat).toFloat(),
+                            clusterRadiusPx(candidate.size()),
+                        )
+                    }
+                    val individual = result.individual().firstOrNull { marker ->
+                        within(
+                            local,
+                            viewport.screenXWrapped(marker.longitudeDeg()).toFloat(),
+                            viewport.screenY(marker.latitudeDeg()).toFloat(),
+                            MARKER_HIT_RADIUS_PX,
+                        )
+                    }
+                    val targets = selectedOutside?.let(::listOf)
+                        ?: cluster?.getMarkers()
+                        ?: individual?.let(::listOf)
+                    val window = canvasCoordinates?.localToWindow(local)
+                    if (!targets.isNullOrEmpty() && window != null) {
+                        onMarkerContextRequested?.invoke(
+                            targets,
+                            IntOffset(window.x.roundToInt(), window.y.roundToInt()),
+                        )
+                        event.changes.forEach { it.consume() }
+                    }
+                }
+            }
             .pointerInput(Unit) {
                 detectTransformGestures { centroid, pan, zoomChange, _ ->
                     var viewport = mapState.viewportFor(size.width.toFloat(), size.height.toFloat())
@@ -238,15 +306,28 @@ fun ComposeStationMap(
                     }
                 }
             }
-            .pointerInput(markers, groupingEnabled, onMarkerClicked) {
+            .pointerInput(markers, selectedTargetOutsideMarkers, groupingEnabled, onMarkerClicked) {
                 detectTapGestures { offset ->
                     val viewport = mapState.viewportFor(size.width.toFloat(), size.height.toFloat())
                     val result = StationMapClusterer.cluster(markers, viewport, groupingEnabled)
 
+                    val selectedOutside = selectedTargetOutsideMarkers?.takeIf { marker ->
+                        within(
+                            offset,
+                            viewport.screenXWrapped(marker.longitudeDeg()).toFloat(),
+                            viewport.screenY(marker.latitudeDeg()).toFloat(),
+                            MARKER_HIT_RADIUS_PX,
+                        )
+                    }
+                    if (selectedOutside != null) {
+                        onMarkerClicked?.invoke(selectedOutside)
+                        return@detectTapGestures
+                    }
+
                     val hitCluster = result.clusters().firstOrNull { cluster ->
                         within(
                             offset,
-                            viewport.screenX(cluster.centerLon).toFloat(),
+                            viewport.screenXWrapped(cluster.centerLon).toFloat(),
                             viewport.screenY(cluster.centerLat).toFloat(),
                             clusterRadiusPx(cluster.size()),
                         )
@@ -269,14 +350,12 @@ fun ComposeStationMap(
                     val hit = result.individual().firstOrNull { marker ->
                         within(
                             offset,
-                            viewport.screenX(marker.longitudeDeg()).toFloat(),
+                            viewport.screenXWrapped(marker.longitudeDeg()).toFloat(),
                             viewport.screenY(marker.latitudeDeg()).toFloat(),
                             MARKER_HIT_RADIUS_PX,
                         )
                     }
-                    if (hit != null) {
+                    if (hit != null) onMarkerClicked?.invoke(hit)
-                        onMarkerClicked?.invoke(hit)
-                    }
                 }
             }
     ) {
@@ -292,10 +371,34 @@ fun ComposeStationMap(
         drawRect(color = if (darkMode) MAP_BACKGROUND_DARK else MAP_BACKGROUND_LIGHT)
 
         drawTiles(viewport, imageCache, darkMode)
+        if (home != null && spatialFilterOverlay != null) {
+            drawSpatialFilterOverlay(
+                viewport = viewport,
+                homeLatitudeDeg = home.first,
+                homeLongitudeDeg = home.second,
+                state = spatialFilterOverlay,
+                darkMode = darkMode,
+            )
+        }
         drawMaidenheadGrid(viewport, textMeasurer, darkMode)
-        drawBeamAndPath(viewport, home, antennaAzimuthDeg, antennaBeamWidthDeg, maxQrbKm, markers, selectedMarkerCallsign, darkMode)
+        drawWorkedGrossFields(viewport, workedGrossFields)
+        drawBeamAndPath(
+            viewport,
+            home,
+            antennaAzimuthDeg,
+            antennaBeamWidthDeg,
+            maxQrbKm,
+            selectedTarget,
+            darkMode,
+        )
         drawStations(viewport, clusterResult, selectedMarkerCallsign, textMeasurer, darkMode)
-        drawHover(viewport, hoverPosition, clusterResult, textMeasurer)
+        selectedTargetOutsideMarkers?.let { target ->
+            val x = viewport.screenXWrapped(target.longitudeDeg()).toFloat()
+            val y = viewport.screenY(target.latitudeDeg()).toFloat()
+            drawStationDot(x, y, selected = true, worked = target.worked(), warning = target.warningToMyDirection())
+            drawStationLabel(x, y, target.markerLabel(), target.warningToMyDirection(), textMeasurer, darkMode)
+        }
+        drawHover(viewport, hoverPosition, clusterResult, selectedTargetOutsideMarkers, textMeasurer)
     }
 }
 
@@ -430,8 +533,8 @@ private fun DrawScope.drawMaidenheadGrid(
     val verticals = sortedSetOf<Float>()
     val horizontals = sortedSetOf<Float>()
     for (cell in cells) {
-        verticals.add(viewport.screenX(cell.westLon()).toFloat())
+        verticals.add(viewport.screenXWrapped(cell.westLon()).toFloat())
-        verticals.add(viewport.screenX(cell.eastLon()).toFloat())
+        verticals.add(viewport.screenXWrapped(cell.eastLon()).toFloat())
         horizontals.add(viewport.screenY(cell.northLat()).toFloat())
         horizontals.add(viewport.screenY(cell.southLat()).toFloat())
     }
@@ -472,7 +575,7 @@ private fun DrawScope.drawMaidenheadGrid(
         }
 
         /* Centred in the cell, the way the stylesheet's translate(-50%, -50%) was. */
-        val centerX = viewport.screenX((cell.westLon() + cell.eastLon()) / 2.0).toFloat()
+        val centerX = viewport.screenXWrapped((cell.westLon() + cell.eastLon()) / 2.0).toFloat()
         val centerY = viewport.screenY((cell.southLat() + cell.northLat()) / 2.0).toFloat()
 
         val layout = textMeasurer.measure(cell.locatorLabel(), style = labelStyle)
@@ -496,8 +599,7 @@ private fun DrawScope.drawBeamAndPath(
     antennaAzimuthDeg: Double,
     antennaBeamWidthDeg: Double,
     maxQrbKm: Double,
-    markers: List<MapCallsignRawSnapshot>,
+    selectedTarget: MapCallsignRawSnapshot?,
-    selectedMarkerCallsign: String?,
     darkMode: Boolean,
 ) {
     if (home == null) {
@@ -505,32 +607,40 @@ private fun DrawScope.drawBeamAndPath(
     }
     val (homeLat, homeLon) = home
 
-    if (antennaBeamWidthDeg > 0.0 && maxQrbKm > 0.0) {
+    if (isAntennaSectorDrawable(home, antennaAzimuthDeg, antennaBeamWidthDeg, maxQrbKm)) {
         val polygon = Path()
         buildBeamPolygon(homeLat, homeLon, antennaAzimuthDeg, antennaBeamWidthDeg, maxQrbKm)
             .forEachIndexed { index, point ->
-                val x = viewport.screenX(point.second).toFloat()
+                val x = viewport.screenXWrapped(point.second).toFloat()
                 val y = viewport.screenY(point.first).toFloat()
                 if (index == 0) polygon.moveTo(x, y) else polygon.lineTo(x, y)
             }
         polygon.close()
 
-        drawPath(path = polygon, color = BEAM_COLOR, alpha = BEAM_FILL_ALPHA, style = Fill)
+        drawPath(path = polygon, color = ANTENNA_OVERLAY_COLOR, alpha = BEAM_FILL_ALPHA, style = Fill)
-        drawPath(path = polygon, color = BEAM_COLOR, style = Stroke(width = BEAM_STROKE_WIDTH_PX))
+        drawPath(path = polygon, color = ANTENNA_OVERLAY_COLOR, style = Stroke(width = BEAM_STROKE_WIDTH_PX))
     }
 
-    val selected = markers.firstOrNull {
+    val selected = selectedTarget?.takeIf(MapCallsignRawSnapshot::hasUsablePosition)
-        it.callSignRaw() == selectedMarkerCallsign && it.hasUsablePosition()
-    }
     if (selected != null) {
+        val start = Offset(viewport.screenXWrapped(homeLon).toFloat(), viewport.screenY(homeLat).toFloat())
+        val end = Offset(
+            viewport.screenXWrapped(selected.longitudeDeg()).toFloat(),
+            viewport.screenY(selected.latitudeDeg()).toFloat(),
+        )
+        drawLine(
+            color = if (darkMode) CONNECTION_HALO_DARK else CONNECTION_HALO_LIGHT,
+            alpha = CONNECTION_HALO_ALPHA,
+            start = start,
+            end = end,
+            strokeWidth = CONNECTION_HALO_WIDTH_PX,
+            pathEffect = PathEffect.dashPathEffect(CONNECTION_DASH_PX),
+        )
         drawLine(
             color = if (darkMode) CONNECTION_COLOR_DARK else CONNECTION_COLOR_LIGHT,
             alpha = CONNECTION_ALPHA,
-            start = Offset(viewport.screenX(homeLon).toFloat(), viewport.screenY(homeLat).toFloat()),
+            start = start,
-            end = Offset(
+            end = end,
-                viewport.screenX(selected.longitudeDeg()).toFloat(),
-                viewport.screenY(selected.latitudeDeg()).toFloat(),
-            ),
             strokeWidth = CONNECTION_STROKE_WIDTH_PX,
             pathEffect = PathEffect.dashPathEffect(CONNECTION_DASH_PX),
         )
@@ -541,9 +651,9 @@ private fun DrawScope.drawBeamAndPath(
      * home is, and with the beam switched off there was none. A small dot is kept here
      * deliberately.
      */
-    val homeX = viewport.screenX(homeLon).toFloat()
+    val homeX = viewport.screenXWrapped(homeLon).toFloat()
     val homeY = viewport.screenY(homeLat).toFloat()
-    drawCircle(color = BEAM_COLOR, radius = HOME_RADIUS_PX, center = Offset(homeX, homeY))
+    drawCircle(color = ANTENNA_OVERLAY_COLOR, radius = HOME_RADIUS_PX, center = Offset(homeX, homeY))
     drawCircle(color = Color.White, radius = HOME_INNER_RADIUS_PX, center = Offset(homeX, homeY))
 }
 
@@ -558,7 +668,7 @@ private fun DrawScope.drawStations(
 ) {
     for (cluster in clusterResult.clusters()) {
         drawClusterBubble(
-            x = viewport.screenX(cluster.centerLon).toFloat(),
+            x = viewport.screenXWrapped(cluster.centerLon).toFloat(),
             y = viewport.screenY(cluster.centerLat).toFloat(),
             count = cluster.size(),
             containsWorked = cluster.getMarkers().any { it.worked() },
@@ -567,7 +677,7 @@ private fun DrawScope.drawStations(
     }
 
     for (marker in clusterResult.individual()) {
-        val x = viewport.screenX(marker.longitudeDeg()).toFloat()
+        val x = viewport.screenXWrapped(marker.longitudeDeg()).toFloat()
         val y = viewport.screenY(marker.latitudeDeg()).toFloat()
         val selected = marker.callSignRaw() == selectedMarkerCallsign
 
@@ -685,14 +795,23 @@ private fun DrawScope.drawHover(
     viewport: MapViewport,
     hoverPosition: Offset?,
     clusterResult: StationMapClusterer.Result,
+    selectedTargetOutsideMarkers: MapCallsignRawSnapshot?,
     textMeasurer: TextMeasurer,
 ) {
     val position = hoverPosition ?: return
 
+    val selectedTargetUnderPointer = selectedTargetOutsideMarkers?.takeIf { marker ->
+        within(
+            position,
+            viewport.screenXWrapped(marker.longitudeDeg()).toFloat(),
+            viewport.screenY(marker.latitudeDeg()).toFloat(),
+            MARKER_HIT_RADIUS_PX,
+        )
+    }
     val clusterUnderPointer = clusterResult.clusters().firstOrNull { cluster ->
         within(
             position,
-            viewport.screenX(cluster.centerLon).toFloat(),
+            viewport.screenXWrapped(cluster.centerLon).toFloat(),
             viewport.screenY(cluster.centerLat).toFloat(),
             clusterRadiusPx(cluster.size()),
         )
@@ -700,19 +819,17 @@ private fun DrawScope.drawHover(
     val markerUnderPointer = clusterResult.individual().firstOrNull { marker ->
         within(
             position,
-            viewport.screenX(marker.longitudeDeg()).toFloat(),
+            viewport.screenXWrapped(marker.longitudeDeg()).toFloat(),
             viewport.screenY(marker.latitudeDeg()).toFloat(),
             MARKER_HIT_RADIUS_PX,
         )
     }
-
     val text = when {
+        selectedTargetUnderPointer != null -> selectedTargetUnderPointer.tooltipText()
+
         clusterUnderPointer != null -> MapMarkerClusterTooltip.build(clusterUnderPointer)
 
-        markerUnderPointer != null -> markerUnderPointer.locator6().let { locator ->
+        markerUnderPointer != null -> markerUnderPointer.tooltipText()
-            if (locator.isBlank()) markerUnderPointer.displayCallSign()
-            else "${markerUnderPointer.displayCallSign()} ($locator)"
-        }
 
         else -> return
     }
@@ -758,6 +875,46 @@ private fun DrawScope.drawHover(
     )
 }
 
+private fun DrawScope.drawWorkedGrossFields(
+    viewport: MapViewport,
+    workedGrossFields: Set<String>,
+) {
+    visibleWorkedGrossFieldCells(viewport, workedGrossFields).forEach { cell ->
+        val left = viewport.screenXWrapped(cell.westLon()).toFloat()
+        val right = viewport.screenXWrapped(cell.eastLon()).toFloat()
+        val top = viewport.screenY(cell.northLat()).toFloat()
+        val bottom = viewport.screenY(cell.southLat()).toFloat()
+        val topLeft = Offset(minOf(left, right), minOf(top, bottom))
+        val cellSize = Size(kotlin.math.abs(right - left), kotlin.math.abs(bottom - top))
+        drawRect(
+            color = WORKED_GRID_FILL,
+            topLeft = topLeft,
+            size = cellSize,
+        )
+        drawRect(
+            color = WORKED_GRID_BORDER,
+            topLeft = topLeft,
+            size = cellSize,
+            style = Stroke(width = WORKED_GRID_BORDER_WIDTH_PX),
+        )
+    }
+}
+
+/** Worked four-character cells visible in the current viewport, independent of markers. */
+internal fun visibleWorkedGrossFieldCells(
+    viewport: MapViewport,
+    workedGrossFields: Set<String>,
+): List<MaidenheadGridUtils.GridCell> {
+    if (workedGrossFields.isEmpty()) return emptyList()
+    return MaidenheadGridUtils.buildVisibleCells(
+        viewport.southLat(),
+        viewport.westLon(),
+        viewport.northLat(),
+        viewport.eastLon(),
+        MaidenheadGridUtils.GridPrecision.SQUARE_4,
+    ).filter { it.locatorLabel() in workedGrossFields }
+}
+
 /* ----------------------------------------------------------- helpers */
 
 private val MapMarkerCluster.centerLon: Double get() = getCenterLon()
@@ -782,7 +939,7 @@ private fun clusterFontSizePx(count: Int): Float = when {
 }
 
 /** Null rather than a guess when the operator has no usable locator configured. */
-private fun homePosition(ownLocator6: String): Pair<Double, Double>? {
+internal fun homePosition(ownLocator6: String): Pair<Double, Double>? {
     if (ownLocator6.length < 4) {
         return null
     }
@@ -794,6 +951,15 @@ private fun homePosition(ownLocator6: String): Pair<Double, Double>? {
     }
 }
 
+internal fun isAntennaSectorDrawable(
+    home: Pair<Double, Double>?,
+    antennaAzimuthDeg: Double,
+    antennaBeamWidthDeg: Double,
+    maxQrbKm: Double,
+): Boolean = home != null && antennaAzimuthDeg.isFinite() &&
+    antennaBeamWidthDeg.isFinite() && antennaBeamWidthDeg > 0.0 &&
+    maxQrbKm.isFinite() && maxQrbKm > 0.0
+
 fun calculateDestinationPoint(
     startLatDeg: Double,
     startLonDeg: Double,
@@ -864,6 +1030,9 @@ private const val GRID_LINE_WIDTH_PX = 1.4f
 private val GRID_LABEL_COLOR = Color(0xFF63067A)
 private val GRID_LABEL_BACKGROUND_LIGHT = Color.White.copy(alpha = 0.18f)
 private val GRID_LABEL_BACKGROUND_DARK = Color(0xFF22262B).copy(alpha = 0.20f)
+private val WORKED_GRID_FILL = Color.Black.copy(alpha = 0.30f)
+private val WORKED_GRID_BORDER = Color.Black
+private const val WORKED_GRID_BORDER_WIDTH_PX = 3f
 private const val GRID_LABEL_PADDING_PX = 3f
 
 private val DOT_FILL = Color(0xFF1D1D1D)
@@ -898,16 +1067,20 @@ private const val CLUSTER_RADIUS_SMALL_PX = 16f
 private const val CLUSTER_RADIUS_MEDIUM_PX = 18f
 private const val CLUSTER_RADIUS_LARGE_PX = 21f
 
-private val BEAM_COLOR = Color(0xFFFF4D4D)
+internal val ANTENNA_OVERLAY_COLOR = Color(0xFFFF4D4D)
 private const val BEAM_FILL_ALPHA = 0.12f
 private const val BEAM_STROKE_WIDTH_PX = 2f
 private const val HOME_RADIUS_PX = 6f
 private const val HOME_INNER_RADIUS_PX = 2f
 
-private val CONNECTION_COLOR_DARK = Color(0xFF2FD7FF)
+private val CONNECTION_COLOR_DARK = Color(0xFF52E7FF)
-private val CONNECTION_COLOR_LIGHT = Color(0xFF00A4CF)
+private val CONNECTION_COLOR_LIGHT = Color(0xFF007A9E)
-private const val CONNECTION_ALPHA = 0.85f
+private val CONNECTION_HALO_DARK = Color.White
-private const val CONNECTION_STROKE_WIDTH_PX = 2f
+private val CONNECTION_HALO_LIGHT = Color.Black
+private const val CONNECTION_ALPHA = 0.98f
+private const val CONNECTION_HALO_ALPHA = 0.82f
+private const val CONNECTION_STROKE_WIDTH_PX = 3f
+private const val CONNECTION_HALO_WIDTH_PX = 5f
 private val CONNECTION_DASH_PX = floatArrayOf(6f, 6f)
 
 private val TOOLTIP_BACKGROUND = Color.White.copy(alpha = 0.92f)

app-desktop/src/main/kotlin/kst4contest/view/compose/map/MapDisplaySettingsState.kt

@@ -0,0 +1,21 @@
+package kst4contest.view.compose.map
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import kst4contest.model.ChatPreferences
+
+/** Compose-observable map geometry read from the active profile. */
+internal class MapDisplaySettingsState(private val prefs: ChatPreferences) {
+
+    var antennaBeamWidthDeg: Double by mutableStateOf(prefs.stn_antennaBeamWidthDeg)
+        private set
+
+    var maxQrbKm: Double by mutableStateOf(prefs.stn_maxQRBDefault)
+        private set
+
+    fun refreshFromPreferences() {
+        antennaBeamWidthDeg = prefs.stn_antennaBeamWidthDeg
+        maxQrbKm = prefs.stn_maxQRBDefault
+    }
+}

app-desktop/src/main/kotlin/kst4contest/view/compose/map/MapNavigationState.kt

@@ -0,0 +1,48 @@
+package kst4contest.view.compose.map
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import kst4contest.view.compose.StationIdentity
+
+/** A deliberate operator action that may move the station-map camera. */
+internal sealed interface MapNavigationRequest {
+    data class FitSelectedPath(val identity: StationIdentity) : MapNavigationRequest
+
+    data class CenterOnQtf(val qtfDegrees: Double) : MapNavigationRequest
+
+    data object ResetToHome : MapNavigationRequest
+}
+/**
+ * The latest deliberate map-navigation request.
+ *
+ * Ordinary model refreshes never write this state. Keeping one monotonically increasing
+ * revision makes repeated selections observable and gives the most recent station or QTF
+ * action deterministic precedence when several actions happen before the map draws.
+ */
+internal class MapNavigationState {
+
+    var request: MapNavigationRequest? by mutableStateOf(null)
+        private set
+
+    var requestRevision: Long by mutableStateOf(0L)
+        private set
+
+    fun fitSelectedPath(identity: StationIdentity) {
+        publish(MapNavigationRequest.FitSelectedPath(identity))
+    }
+
+    fun centerOnQtf(qtfDegrees: Double) {
+        if (!qtfDegrees.isFinite() || qtfDegrees !in 0.0..360.0) return
+        publish(MapNavigationRequest.CenterOnQtf(qtfDegrees))
+    }
+
+    fun resetToHome() {
+        publish(MapNavigationRequest.ResetToHome)
+    }
+
+    private fun publish(next: MapNavigationRequest) {
+        request = next
+        requestRevision++
+    }
+}

app-desktop/src/main/kotlin/kst4contest/view/compose/map/MapOverlayLegend.kt

@@ -0,0 +1,79 @@
+package kst4contest.view.compose.map
+
+import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.foundation.TooltipArea
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.ExperimentalLayoutApi
+import androidx.compose.foundation.layout.FlowRow
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.size
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.testTag
+import androidx.compose.ui.unit.dp
+import kst4contest.view.compose.TooltipCard
+import kst4contest.view.i18n.LocalStrings
+
+@OptIn(ExperimentalFoundationApi::class, ExperimentalLayoutApi::class)
+@Composable
+internal fun MapOverlayLegend(
+    showAntenna: Boolean,
+    showSpatialFilters: Boolean,
+    darkMode: Boolean,
+    modifier: Modifier = Modifier,
+) {
+    if (!showAntenna && !showSpatialFilters) return
+
+    val strings = LocalStrings.current
+    TooltipArea(
+        tooltip = { TooltipCard(strings.mapOverlayLegendTooltip) },
+        modifier = modifier,
+    ) {
+        FlowRow(
+            horizontalArrangement = Arrangement.spacedBy(8.dp),
+            verticalArrangement = Arrangement.spacedBy(2.dp),
+            itemVerticalAlignment = Alignment.CenterVertically,
+        ) {
+            if (showAntenna) {
+                LegendItem(
+                    color = ANTENNA_OVERLAY_COLOR,
+                    label = strings.mapOverlayAntenna,
+                    tag = MAP_ANTENNA_LEGEND_TAG,
+                )
+            }
+            if (showSpatialFilters) {
+                LegendItem(
+                    color = spatialFilterOverlayLineColor(darkMode),
+                    label = strings.mapOverlayFilters,
+                    tag = MAP_FILTER_LEGEND_TAG,
+                )
+            }
+        }
+    }
+}
+
+@Composable
+private fun LegendItem(color: Color, label: String, tag: String) {
+    Row(
+        modifier = Modifier.testTag(tag),
+        horizontalArrangement = Arrangement.spacedBy(4.dp),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        androidx.compose.foundation.layout.Box(
+            Modifier
+                .size(9.dp)
+                .clip(androidx.compose.foundation.shape.CircleShape)
+                .background(color),
+        )
+        Text(text = label, style = MaterialTheme.typography.bodySmall)
+    }
+}
+
+internal const val MAP_ANTENNA_LEGEND_TAG = "station-map-antenna-legend"
+internal const val MAP_FILTER_LEGEND_TAG = "station-map-filter-legend"

app-desktop/src/main/kotlin/kst4contest/view/compose/map/SpatialFilterOverlay.kt

@@ -0,0 +1,273 @@
+package kst4contest.view.compose.map
+
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.geometry.Rect
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.Path
+import androidx.compose.ui.graphics.PathEffect
+import androidx.compose.ui.graphics.PathFillType
+import androidx.compose.ui.graphics.drawscope.DrawScope
+import androidx.compose.ui.graphics.drawscope.Fill
+import androidx.compose.ui.graphics.drawscope.Stroke
+import kst4contest.locatorUtils.DirectionUtils
+import kst4contest.view.map.MapViewport
+import kst4contest.view.map.PathGeometryUtils
+import kotlin.math.ceil
+
+/** Immutable effective QTF/QRB filter values drawn by the station map. */
+data class SpatialFilterOverlayState(
+    val qtfEnabled: Boolean,
+    val qtfDegrees: Double,
+    val beamWidthDeg: Double,
+    val minQrbEnabled: Boolean,
+    val minQrbKm: Double,
+    val maxQrbEnabled: Boolean,
+    val maxQrbKm: Double,
+) {
+    val isActive: Boolean
+        get() = qtfEnabled || minQrbEnabled || maxQrbEnabled
+
+    val hasEmptyDistanceRange: Boolean
+        get() = minQrbEnabled && maxQrbEnabled && minQrbKm >= maxQrbKm
+
+    val hasRenderableValues: Boolean
+        get() = (!qtfEnabled || qtfDegrees.isFinite() && beamWidthDeg.isFinite()) &&
+            (!minQrbEnabled || minQrbKm.isFinite()) &&
+            (!maxQrbEnabled || maxQrbKm.isFinite())
+
+    /** True when the current values produce at least one visible fill or boundary. */
+    val hasDrawableGeometry: Boolean
+        get() {
+            if (!isActive || !hasRenderableValues) return false
+            if (minQrbEnabled && !maxQrbEnabled) return true
+            if (minQrbEnabled && minQrbKm > 0.0) return true
+            if (maxQrbEnabled && maxQrbKm > 0.0) return true
+            return qtfEnabled && !maxQrbEnabled
+        }
+
+    /** Mirrors the filter predicate: minimum exclusive, maximum inclusive. */
+    fun accepts(distanceKm: Double, bearingDeg: Double): Boolean {
+        if (!distanceKm.isFinite() || !bearingDeg.isFinite()) return false
+        if (minQrbEnabled && distanceKm <= minQrbKm) return false
+        if (maxQrbEnabled && distanceKm > maxQrbKm) return false
+        if (qtfEnabled && !DirectionUtils.isAngleInRange(bearingDeg, qtfDegrees, beamWidthDeg)) return false
+        return true
+    }
+}
+
+internal fun DrawScope.drawSpatialFilterOverlay(
+    viewport: MapViewport,
+    homeLatitudeDeg: Double,
+    homeLongitudeDeg: Double,
+    state: SpatialFilterOverlayState,
+    darkMode: Boolean,
+) {
+    if (!state.hasDrawableGeometry ||
+        !homeLatitudeDeg.isFinite() || !homeLongitudeDeg.isFinite()
+    ) return
+
+    val fillColor = if (darkMode) FILTER_FILL_DARK else FILTER_FILL_LIGHT
+    val lineColor = spatialFilterOverlayLineColor(darkMode)
+    val angular = state.qtfEnabled && state.beamWidthDeg.isFinite()
+    val validAngularArea = !angular || state.beamWidthDeg > 0.0 && state.beamWidthDeg < 360.0
+    val visibleRadius = visibleRadiusKm(viewport, homeLatitudeDeg, homeLongitudeDeg)
+    val outerRadius = if (state.maxQrbEnabled) state.maxQrbKm else visibleRadius
+    val innerRadius = if (state.minQrbEnabled) state.minQrbKm else 0.0
+
+    if (!state.hasEmptyDistanceRange && validAngularArea && outerRadius > innerRadius && outerRadius > 0.0) {
+        val fillPath = when {
+            angular -> annularSectorPath(
+                viewport,
+                homeLatitudeDeg,
+                homeLongitudeDeg,
+                state.qtfDegrees,
+                state.beamWidthDeg,
+                innerRadius.coerceAtLeast(0.0),
+                outerRadius,
+            )
+
+            state.minQrbEnabled && !state.maxQrbEnabled -> outsideCirclePath(
+                viewport,
+                homeLatitudeDeg,
+                homeLongitudeDeg,
+                innerRadius.coerceAtLeast(0.0),
+            )
+
+            else -> ringPath(
+                viewport,
+                homeLatitudeDeg,
+                homeLongitudeDeg,
+                innerRadius.coerceAtLeast(0.0),
+                outerRadius,
+            )
+        }
+        drawPath(fillPath, fillColor, style = Fill)
+    }
+
+    val stroke = Stroke(
+        width = FILTER_LINE_WIDTH_PX,
+        pathEffect = PathEffect.dashPathEffect(FILTER_DASH_PX),
+    )
+    if (state.minQrbEnabled && state.minQrbKm > 0.0) {
+        drawPath(circlePath(viewport, homeLatitudeDeg, homeLongitudeDeg, state.minQrbKm), lineColor, style = stroke)
+    }
+    if (state.maxQrbEnabled && state.maxQrbKm > 0.0) {
+        drawPath(circlePath(viewport, homeLatitudeDeg, homeLongitudeDeg, state.maxQrbKm), lineColor, style = stroke)
+    }
+    if (angular) {
+        val boundaryRadius = if (state.maxQrbEnabled) state.maxQrbKm else visibleRadius
+        val halfWidth = state.beamWidthDeg.coerceAtLeast(0.0) / 2.0
+        listOf(state.qtfDegrees - halfWidth, state.qtfDegrees + halfWidth).forEach { bearing ->
+            val endpoint = calculateDestinationPoint(
+                homeLatitudeDeg,
+                homeLongitudeDeg,
+                bearing,
+                boundaryRadius,
+            )
+            drawLine(
+                color = lineColor,
+                start = Offset(
+                    viewport.screenXWrapped(homeLongitudeDeg).toFloat(),
+                    viewport.screenY(homeLatitudeDeg).toFloat(),
+                ),
+                end = Offset(
+                    viewport.screenXWrapped(endpoint.second).toFloat(),
+                    viewport.screenY(endpoint.first).toFloat(),
+                ),
+                strokeWidth = FILTER_LINE_WIDTH_PX,
+                pathEffect = PathEffect.dashPathEffect(FILTER_DASH_PX),
+            )
+        }
+    }
+}
+
+private fun outsideCirclePath(
+    viewport: MapViewport,
+    homeLatitudeDeg: Double,
+    homeLongitudeDeg: Double,
+    radiusKm: Double,
+): Path = Path().apply {
+    fillType = PathFillType.EvenOdd
+    addRect(Rect(0f, 0f, viewport.widthPx().toFloat(), viewport.heightPx().toFloat()))
+    addPath(circlePath(viewport, homeLatitudeDeg, homeLongitudeDeg, radiusKm))
+}
+
+private fun ringPath(
+    viewport: MapViewport,
+    homeLatitudeDeg: Double,
+    homeLongitudeDeg: Double,
+    innerRadiusKm: Double,
+    outerRadiusKm: Double,
+): Path = Path().apply {
+    fillType = PathFillType.EvenOdd
+    addPath(circlePath(viewport, homeLatitudeDeg, homeLongitudeDeg, outerRadiusKm))
+    if (innerRadiusKm > 0.0) {
+        addPath(circlePath(viewport, homeLatitudeDeg, homeLongitudeDeg, innerRadiusKm))
+    }
+}
+
+private fun annularSectorPath(
+    viewport: MapViewport,
+    homeLatitudeDeg: Double,
+    homeLongitudeDeg: Double,
+    centerBearingDeg: Double,
+    beamWidthDeg: Double,
+    innerRadiusKm: Double,
+    outerRadiusKm: Double,
+): Path {
+    val halfWidth = beamWidthDeg / 2.0
+    val outer = arcPoints(
+        homeLatitudeDeg,
+        homeLongitudeDeg,
+        centerBearingDeg - halfWidth,
+        beamWidthDeg,
+        outerRadiusKm,
+    )
+    val inner = if (innerRadiusKm > 0.0) {
+        arcPoints(
+            homeLatitudeDeg,
+            homeLongitudeDeg,
+            centerBearingDeg - halfWidth,
+            beamWidthDeg,
+            innerRadiusKm,
+        ).asReversed()
+    } else {
+        listOf(homeLatitudeDeg to homeLongitudeDeg)
+    }
+
+    return pathThrough(viewport, outer + inner, close = true)
+}
+
+private fun circlePath(
+    viewport: MapViewport,
+    homeLatitudeDeg: Double,
+    homeLongitudeDeg: Double,
+    radiusKm: Double,
+): Path = pathThrough(
+    viewport,
+    arcPoints(homeLatitudeDeg, homeLongitudeDeg, 0.0, 360.0, radiusKm),
+    close = true,
+)
+
+private fun arcPoints(
+    homeLatitudeDeg: Double,
+    homeLongitudeDeg: Double,
+    startBearingDeg: Double,
+    sweepDeg: Double,
+    radiusKm: Double,
+): List<Pair<Double, Double>> {
+    val segmentCount = maxOf(24, ceil(kotlin.math.abs(sweepDeg) / 3.0).toInt())
+    return (0..segmentCount).map { segment ->
+        calculateDestinationPoint(
+            homeLatitudeDeg,
+            homeLongitudeDeg,
+            startBearingDeg + sweepDeg * segment / segmentCount,
+            radiusKm,
+        )
+    }
+}
+
+private fun pathThrough(
+    viewport: MapViewport,
+    points: List<Pair<Double, Double>>,
+    close: Boolean,
+): Path = Path().apply {
+    points.forEachIndexed { index, point ->
+        val x = viewport.screenXWrapped(point.second).toFloat()
+        val y = viewport.screenY(point.first).toFloat()
+        if (index == 0) moveTo(x, y) else lineTo(x, y)
+    }
+    if (close && points.isNotEmpty()) close()
+}
+
+private fun visibleRadiusKm(
+    viewport: MapViewport,
+    homeLatitudeDeg: Double,
+    homeLongitudeDeg: Double,
+): Double {
+    val corners = listOf(
+        viewport.northLat() to viewport.westLon(),
+        viewport.northLat() to viewport.eastLon(),
+        viewport.southLat() to viewport.westLon(),
+        viewport.southLat() to viewport.eastLon(),
+    )
+    val farthestCorner = corners.maxOfOrNull { (latitude, longitude) ->
+        PathGeometryUtils.calculateGreatCircleDistanceKm(
+            homeLatitudeDeg,
+            homeLongitudeDeg,
+            latitude,
+            longitude,
+        )
+    } ?: 0.0
+    return farthestCorner * VIEWPORT_RADIUS_MARGIN
+}
+
+private val FILTER_FILL_LIGHT = Color(0xFF5B4BC4).copy(alpha = 0.16f)
+private val FILTER_FILL_DARK = Color(0xFF78A9FF).copy(alpha = 0.18f)
+private val FILTER_LINE_LIGHT = Color(0xFF4937B8).copy(alpha = 0.88f)
+private val FILTER_LINE_DARK = Color(0xFF8CB8FF).copy(alpha = 0.92f)
+internal fun spatialFilterOverlayLineColor(darkMode: Boolean): Color =
+    if (darkMode) FILTER_LINE_DARK else FILTER_LINE_LIGHT
+private const val FILTER_LINE_WIDTH_PX = 2f
+private val FILTER_DASH_PX = floatArrayOf(7f, 5f)
+private const val VIEWPORT_RADIUS_MARGIN = 1.12

app-desktop/src/main/kotlin/kst4contest/view/compose/map/StationMapWindow.kt

@@ -11,6 +11,8 @@ import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.alpha
+import androidx.compose.ui.geometry.Size
+import androidx.compose.ui.platform.LocalDensity
 import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.text.font.FontStyle
 import androidx.compose.ui.text.style.TextOverflow
@@ -20,13 +22,21 @@ import kst4contest.view.ApplicationRuntimeLauncher
 import kst4contest.view.compose.PaletteStore
 import kst4contest.view.compose.ComposeWindowHost
 import kst4contest.view.compose.MainWindowState
+import kst4contest.view.compose.StationIdentity
+import kst4contest.view.compose.StationContextMenuState
+import kst4contest.view.compose.StationContextOverlays
+import kst4contest.view.compose.StationSelectionSource
 import kst4contest.view.map.MapCallsignRawSnapshotBuilder
 import kst4contest.view.map.PathAnalysisResult
+import kst4contest.view.map.MapViewportNavigation
 import kst4contest.view.map.StationMapStatusText
 import kst4contest.view.map.TileFetcher
 import java.util.EnumSet
 
-@OptIn(androidx.compose.foundation.ExperimentalFoundationApi::class)
+@OptIn(
+    androidx.compose.foundation.ExperimentalFoundationApi::class,
+    androidx.compose.foundation.layout.ExperimentalLayoutApi::class,
+)
 object StationMapWindow {
 
     private val host = ComposeWindowHost("Map")
@@ -60,14 +70,16 @@ object StationMapWindow {
             widthDp = widthDp,
             heightDp = heightDp,
             onResized = onResized,
+            alwaysOnTop = mainWindowState.prefs.isGUIstationMapAlwaysOnTop,
         ) { _ ->
             val window = this.window
             /*
              * Never larger than the smallest screen: AWT enforces a minimum size even past
              * the edge, and some operators work on 640x480.
              */
-            androidx.compose.runtime.LaunchedEffect(window) {
+            androidx.compose.runtime.LaunchedEffect(window, mainWindowState.prefs.isGUIstationMapAlwaysOnTop) {
                 window?.minimumSize = WindowPlacementOnScreen.minimumSizeOnScreens(900, 600)
+                window?.isAlwaysOnTop = mainWindowState.prefs.isGUIstationMapAlwaysOnTop
             }
             val tileFetcher = remember { TileFetcher() }
 
@@ -80,7 +92,11 @@ object StationMapWindow {
                 onDispose { tileFetcher.close() }
             }
 
-            Content(mainWindowState = mainWindowState, tileFetcher = tileFetcher)
+            Content(
+                mainWindowState = mainWindowState,
+                tileFetcher = tileFetcher,
+                onAlwaysOnTopChanged = { enabled -> window?.isAlwaysOnTop = enabled },
+            )
         } // host.show content
     }
 
@@ -95,9 +111,8 @@ object StationMapWindow {
      * @param chatMembers the roster a marker click looks its station up in; a marker stands
      *        for a raw callsign, and this is where its category variants come from
      * @param mapState where the map is looking
-     * @param pathAnalysis asked each time the selection changes; null means there is no
+     * @param pathAnalysis asked for an explicit selection; null disables only the terrain
-     *        running application, and then the map neither pans nor analyses, exactly as
+     *        analysis while viewport navigation remains available
-     *        when no chat controller existed before the split
      */
     @Composable
     internal fun Content(
@@ -108,6 +123,7 @@ object StationMapWindow {
         },
         mapState: MapState = remember { MapState() },
         pathAnalysis: () -> MapPathAnalysis? = ::runtimePathAnalysis,
+        onAlwaysOnTopChanged: (Boolean) -> Unit = { },
     ) {
             val strings = LocalStrings.current
 
@@ -128,13 +144,17 @@ object StationMapWindow {
             
             var groupingEnabled by remember { mutableStateOf(prefs.isGUIstationMapClusteringEnabled) }
             var pathAnalysisVisible by remember { mutableStateOf(prefs.isGUIstationMapPathAnalysisVisible) }
+            var alwaysOnTop by remember { mutableStateOf(prefs.isGUIstationMapAlwaysOnTop) }
+            val stationContextMenu = remember(mainWindowState) {
+                StationContextMenuState(mainWindowState::selectStation)
+            }
             
             val selectedMember = mainWindowState.selectedStation.selected
             
             val ownLocator6 by remember { androidx.compose.runtime.mutableStateOf(mainWindowState.prefs.stn_loginLocatorMainCat) }
             val antennaAzimuthDeg = mainWindowState.antennaQtf.value
-            val antennaBeamWidthDeg = mainWindowState.prefs.stn_antennaBeamWidthDeg
+            val antennaBeamWidthDeg = mainWindowState.mapDisplaySettings.antennaBeamWidthDeg
-            val maxQrbKm = mainWindowState.prefs.stn_maxQRBDefault
+            val maxQrbKm = mainWindowState.mapDisplaySettings.maxQrbKm
 
             /*
              * The markers are the stations the list shows, not all of them (#21): the
@@ -159,59 +179,60 @@ object StationMapWindow {
                     }
 
                     builder.buildSnapshots(
-                        mainWindowState.stations.visibleRows,
+                        mainWindowState.stations.filteredRows,
                         selectedMember,
                         bandSet
                     )
                 }
             }
 
+            /*
+             * Selection is independent of the filtered marker set. A selected station
+             * remains a target even when an active filter removes its normal marker; it is
+             * drawn in a separate selection layer and never enters marker counts or clusters.
+             */
+            val selectedTarget by remember(
+                selectedMember,
+                mainWindowState.stations.contentRevision,
+                mainWindowState.activeBands,
+            ) {
+                derivedStateOf {
+                    selectedMember?.let { selected ->
+                        val variants = chatMembers().filter { it.callSignRaw == selected.callSignRaw }
+                            .ifEmpty { listOf(selected) }
+                        val bands = EnumSet.noneOf(Band::class.java).apply {
+                            addAll(mainWindowState.activeBands)
+                        }
+                        MapCallsignRawSnapshotBuilder()
+                            .buildSnapshots(variants, selected, bands)
+                            .firstOrNull()
+                    }
+                }
+            }
+
             var pathAnalysisResult by remember { mutableStateOf<PathAnalysisResult?>(null) }
+            var automaticAnalysisRevision by remember { mutableStateOf(0L) }
 
             // Read through updated state so a caller passing a new lambda is never served a stale one.
             val currentPathAnalysis by rememberUpdatedState(pathAnalysis)
 
-            /*
+            LaunchedEffect(mainWindowState.stationSelection.explicitSelectionRevision) {
-             * Whether the selected station has a marker. A filter can hide it (#21), and a
+                val automaticRequest = ++automaticAnalysisRevision
-             * station without a locator never has one; then there is nothing to analyse.
+                val explicitRevisionAtStart = mainWindowState.mapReachability.requestRevision
-             */
-            val selectedHasMarker = selectedMember != null &&
-                markers.any { it.callSignRaw() == selectedMember.callSignRaw }
-
-            LaunchedEffect(selectedMember, selectedHasMarker) {
                 if (selectedMember == null) {
                     pathAnalysisResult = null
                     return@LaunchedEffect
                 }
 
-                val selectedSnapshot = markers.find { it.callSignRaw() == selectedMember.callSignRaw }
+                val selectedSnapshot = selectedTarget
                 if (selectedSnapshot == null) {
-                    // No marker: no request, and no "Loading" for a station the map does not show.
+                    // No valid locator: no request and no misleading loading state.
                     pathAnalysisResult = null
                     return@LaunchedEffect
                 }
 
                 val analysis = currentPathAnalysis()
                 if (analysis != null) {
-                    if (selectedSnapshot.hasUsablePosition()) {
-                        /*
-                         * Pan to the station and leave the zoom alone. The Leaflet map
-                         * did exactly this (focusCallsignRaw) and touched the zoom only
-                         * when the station was hidden inside a bubble, and then only far
-                         * enough to break the bubble open. An earlier Compose version
-                         * recomputed a zoom from a bounding box on every selection and
-                         * clamped it into 4..12, which threw an operator working at zoom
-                         * 15 out to about 7 every time they picked the next station.
-                         * AGENTS.md names zoom first among the things not to change as
-                         * an incidental side effect.
-                         */
-                        mapState.centerLon = selectedSnapshot.longitudeDeg()
-                        mapState.centerLat = selectedSnapshot.latitudeDeg()
-                        mapState.zoom = kst4contest.view.map.StationMapClusterer
-                            .zoomToRevealStations(mapState.zoom.toDouble(), groupingEnabled)
-                            .toFloat()
-                    }
-
                     pathAnalysisResult = PathAnalysisResult.loading(
                         prefs.stn_loginLocatorMainCat,
                         selectedSnapshot.locator6(),
@@ -219,11 +240,115 @@ object StationMapWindow {
                     )
                     
                     analysis.request(selectedMember, selectedSnapshot) { result ->
-                        pathAnalysisResult = result
+                        if (automaticAnalysisRevision == automaticRequest &&
+                            mainWindowState.mapReachability.requestRevision == explicitRevisionAtStart
+                        ) {
+                            pathAnalysisResult = result
+                        }
                     }
                 }
             }
 
+            var mapCanvasSize by remember { mutableStateOf(Size.Zero) }
+            var consumedNavigationRevision by remember(mapState) { mutableStateOf(Long.MIN_VALUE) }
+            val navigationRevision = mainWindowState.mapNavigation.requestRevision
+            val navigationRequest = mainWindowState.mapNavigation.request
+            val navigationPaddingPx = with(LocalDensity.current) { 40.dp.toPx().toDouble() }
+
+            LaunchedEffect(
+                navigationRevision,
+                navigationRequest,
+                mapCanvasSize,
+                selectedTarget,
+                ownLocator6,
+            ) {
+                if (navigationRevision == consumedNavigationRevision ||
+                    mapCanvasSize.width <= 0f || mapCanvasSize.height <= 0f
+                ) {
+                    return@LaunchedEffect
+                }
+
+                val home = runCatching { kst4contest.locatorUtils.Location(ownLocator6) }.getOrNull()
+                val current = mapState.viewportFor(mapCanvasSize.width, mapCanvasSize.height)
+                val next = when (val request = navigationRequest) {
+                    is MapNavigationRequest.FitSelectedPath -> {
+                        val target = selectedTarget
+                        if (home == null || target == null || !target.hasUsablePosition() ||
+                            request.identity != StationIdentity.of(selectedMember)
+                        ) {
+                            null
+                        } else {
+                            MapViewportNavigation.fitPath(
+                                current,
+                                home.latitude.toDegrees(),
+                                home.longitude.toDegrees(),
+                                target.latitudeDeg(),
+                                target.longitudeDeg(),
+                                navigationPaddingPx,
+                            )
+                        }
+                    }
+
+                    is MapNavigationRequest.CenterOnQtf -> {
+                        if (home == null) null else MapViewportNavigation.centreOnBearing(
+                            current,
+                            home.latitude.toDegrees(),
+                            home.longitude.toDegrees(),
+                            request.qtfDegrees,
+                            QTF_FORWARD_CENTRE_FRACTION,
+                        )
+                    }
+
+                    MapNavigationRequest.ResetToHome -> {
+                        if (home == null) null else MapViewportNavigation.centreOnHome(
+                            current,
+                            home.latitude.toDegrees(),
+                            home.longitude.toDegrees(),
+                        )
+                    }
+
+                    null -> null
+                }
+                consumedNavigationRevision = navigationRevision
+                if (next != null) {
+                    mapState.applyFrom(next)
+                }
+            }
+
+            val explicitReachabilityResult = mainWindowState.mapReachability.result
+            LaunchedEffect(mainWindowState.mapReachability.requestRevision, explicitReachabilityResult) {
+                if (explicitReachabilityResult != null) {
+                    automaticAnalysisRevision++
+                    pathAnalysisResult = explicitReachabilityResult
+                    pathAnalysisVisible = true
+                }
+            }
+
+            val workedGrossFields = if (mainWindowState.stationFilter.gridColouring) {
+                mainWindowState.stations.contentRevision
+                mainWindowState.workedGrossFieldsProvider()
+            } else {
+                emptySet()
+            }
+            val spatialFilterOverlay = SpatialFilterOverlayState(
+                qtfEnabled = mainWindowState.stationFilter.qtfEnabled,
+                qtfDegrees = mainWindowState.stationFilter.qtfDegrees,
+                beamWidthDeg = antennaBeamWidthDeg,
+                minQrbEnabled = mainWindowState.stationFilter.minQrbEnabled,
+                minQrbKm = mainWindowState.stationFilter.minQrbKm,
+                maxQrbEnabled = mainWindowState.stationFilter.maxQrbEnabled,
+                maxQrbKm = mainWindowState.stationFilter.maxQrbKm,
+            )
+            val mapHome = remember(ownLocator6) { homePosition(ownLocator6) }
+            val showAntennaOverlay = isAntennaSectorDrawable(
+                mapHome,
+                antennaAzimuthDeg ?: 0.0,
+                antennaBeamWidthDeg,
+                maxQrbKm,
+            )
+            val showSpatialFilterOverlay = mapHome != null && spatialFilterOverlay.hasDrawableGeometry
+            val isDarkTheme = isDarkThemeState.value
+
             androidx.compose.material3.Surface(
                 color = androidx.compose.material3.MaterialTheme.colorScheme.background,
                 contentColor = androidx.compose.material3.MaterialTheme.colorScheme.onBackground,
@@ -237,16 +362,17 @@ object StationMapWindow {
                  * the theme's primary colour, which in the evening sheet is a bright
                  * green, and the map window was the only one wearing it.
                  */
-                Row(
+                FlowRow(
                     modifier = Modifier.fillMaxWidth().padding(8.dp),
-                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.spacedBy(10.dp),
-                    horizontalArrangement = Arrangement.spacedBy(10.dp)
+                    verticalArrangement = Arrangement.spacedBy(4.dp),
+                    itemVerticalAlignment = Alignment.CenterVertically,
                 ) {
                     val statusText = StationMapStatusText.build(
                         markers.size,
                         mainWindowState.stationFilter.activeFilters.isNotEmpty() ||
                             mainWindowState.stationFilter.searchText.isNotBlank(),
-                        markers.firstOrNull { it.callSignRaw() == selectedMember?.callSignRaw },
+                        selectedTarget,
                     )
 
                     /*
@@ -266,6 +392,12 @@ object StationMapWindow {
                         )
                     }
 
+                    MapOverlayLegend(
+                        showAntenna = showAntennaOverlay,
+                        showSpatialFilters = showSpatialFilterOverlay,
+                        darkMode = isDarkTheme,
+                    )
+
                     if (selectedMember != null) {
                         kst4contest.view.compose.Form.button(strings.mapTriggerClusterSpot) {
                             ApplicationRuntimeLauncher.getCurrent()?.chatController
@@ -274,22 +406,41 @@ object StationMapWindow {
                     }
 
                     kst4contest.view.compose.Form.button(strings.mapResetView) {
-                        mainWindowState.stationSelector?.invoke(null)
+                        mainWindowState.selectStation(null, StationSelectionSource.RESET_VIEW)
-                            ?: mainWindowState.selectedStation.select(null)
+                    }
-                        val home = runCatching {
+
-                            kst4contest.locatorUtils.Location(ownLocator6)
+                    kst4contest.view.compose.Form.button(strings.filterReset) {
-                        }.getOrNull()
+                        mainWindowState.resetStationFilters()
-                        mapState.centerLon = home?.longitude?.toDegrees() ?: 10.0
+                    }
-                        mapState.centerLat = home?.latitude?.toDegrees() ?: 51.0
+
-                        /* The zoom is deliberately left alone; see AGENTS.md, UI behaviour. */
+                    androidx.compose.foundation.TooltipArea(
+                        tooltip = { kst4contest.view.compose.TooltipCard(strings.mapGroupNearbyTooltip) },
+                    ) {
+                        Row(verticalAlignment = Alignment.CenterVertically) {
+                            kst4contest.view.compose.CompactCheckbox(
+                                checked = groupingEnabled,
+                                modifier = Modifier.testTag(GROUPING_TAG),
+                            ) {
+                                groupingEnabled = it
+                                prefs.isGUIstationMapClusteringEnabled = it
+                                mainWindowState.requestLayoutSave()
+                            }
+                            Text(strings.mapGroupNearby, modifier = Modifier.padding(start = 4.dp))
+                        }
                     }
 
                     Row(verticalAlignment = Alignment.CenterVertically) {
-                        kst4contest.view.compose.CompactCheckbox(groupingEnabled) {
+                        kst4contest.view.compose.CompactCheckbox(
-                            groupingEnabled = it
+                            checked = alwaysOnTop,
-                            prefs.isGUIstationMapClusteringEnabled = it
+                            onCheckedChange = { enabled ->
-                        }
+                                alwaysOnTop = enabled
-                        Text(strings.mapGroupNearby, modifier = Modifier.padding(start = 4.dp))
+                                prefs.isGUIstationMapAlwaysOnTop = enabled
+                                onAlwaysOnTopChanged(enabled)
+                                mainWindowState.requestLayoutSave()
+                            },
+                            modifier = Modifier.testTag(ALWAYS_ON_TOP_TAG),
+                        )
+                        Text(strings.mapAlwaysOnTop, modifier = Modifier.padding(start = 4.dp))
                     }
 
                     if (!pathAnalysisVisible) {
@@ -305,6 +456,7 @@ object StationMapWindow {
                     ) {
                         pathAnalysisVisible = !pathAnalysisVisible
                         prefs.isGUIstationMapPathAnalysisVisible = pathAnalysisVisible
+                        mainWindowState.requestLayoutSave()
                     }
                 }
 
@@ -320,7 +472,6 @@ object StationMapWindow {
 
                 val leftPane: @Composable () -> Unit = {
                     Column(Modifier.fillMaxHeight()) {
-                        val isDarkTheme = isDarkThemeState.value
                         androidx.compose.foundation.layout.Box(Modifier.weight(1f).fillMaxWidth()) {
                         ComposeStationMap(
                             markers = markers,
@@ -332,7 +483,11 @@ object StationMapWindow {
                             antennaAzimuthDeg = antennaAzimuthDeg ?: 0.0,
                             antennaBeamWidthDeg = antennaBeamWidthDeg,
                             maxQrbKm = maxQrbKm,
+                            selectedTarget = selectedTarget,
+                            spatialFilterOverlay = spatialFilterOverlay,
                             darkMode = isDarkTheme,
+                            workedGrossFields = workedGrossFields,
+                            onCanvasSizeChanged = { mapCanvasSize = it },
                             onMarkerClicked = { snapshot ->
                                 val variants = chatMembers()
                                     .filter { it.callSignRaw == snapshot.callSignRaw() }
@@ -340,19 +495,28 @@ object StationMapWindow {
                                  * A marker stands for a raw callsign, not a category. Keep the
                                  * category already selected when it is one of the variants.
                                  */
-                                val member = variants.firstOrNull { it === mainWindowState.selectedStation.selected }
+                                val selectedIdentity = StationIdentity.of(mainWindowState.selectedStation.selected)
-                                    ?: variants.firstOrNull()
+                                val member = variants.firstOrNull {
+                                    StationIdentity.of(it) == selectedIdentity
+                                } ?: variants.firstOrNull {
+                                    it.chatCategory?.categoryNumber ==
+                                        prefs.loginChatCategoryMain?.categoryNumber
+                                } ?: variants.singleOrNull()
                                 if (member != null) {
-                                    val selector = mainWindowState.stationSelector
+                                    mainWindowState.selectStation(member, StationSelectionSource.MAP)
-                                    if (selector != null) {
-                                        selector(member)
-                                    } else {
-                                        mainWindowState.selectedStation.select(member)
-                                    }
                                     // Mirror old JavaFX handleMapCallsignSelection logic: prefill /cq
                                     mainWindowState.chatInput.prepareCq(member.callSign ?: "", forceOverwrite = true)
                                 }
                             },
+                            onMarkerContextRequested = { snapshots, position ->
+                                val callsigns = snapshots.mapTo(linkedSetOf()) { it.callSignRaw() }
+                                val candidates = chatMembers().filter { it.callSignRaw in callsigns }
+                                stationContextMenu.open(
+                                    candidates,
+                                    StationSelectionSource.MAP_CONTEXT_MENU,
+                                    position,
+                                )
+                            },
                             modifier = Modifier.fillMaxSize().testTag(MAP_CANVAS_TAG)
                         )
 
@@ -416,10 +580,14 @@ object StationMapWindow {
                 } // main layout column
             } // window column
             } // Surface
+            StationContextOverlays(stationContextMenu, mainWindowState)
     } // Content
 
     /** Marks the map canvas so a test can click a marker on it. */
     internal const val MAP_CANVAS_TAG = "station-map-canvas"
+    internal const val GROUPING_TAG = "station-map-grouping"
+    internal const val ALWAYS_ON_TOP_TAG = "station-map-always-on-top"
+    private const val QTF_FORWARD_CENTRE_FRACTION = 0.25
 
     @JvmStatic
     fun applyDarkMode(darkMode: Boolean) {

app-desktop/src/main/kotlin/kst4contest/view/compose/tabs/BeaconTab.kt

@@ -4,9 +4,11 @@ import kst4contest.view.i18n.LocalStrings
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
 import kst4contest.view.compose.Form
+import kst4contest.view.compose.observeAsState
 
 /**
  * The beacon tab: one CQ template per chat category and the interval they share.
@@ -18,12 +20,14 @@ import kst4contest.view.compose.Form
 @Composable
 fun BeaconTab(state: BeaconTabState, onRefused: (String) -> Unit) {
     val strings = LocalStrings.current
+    val mainEnabled by state.mainBeaconEnabled.observeAsState()
+    val secondEnabled by state.secondBeaconEnabled.observeAsState()
 
     Column(
         verticalArrangement = Arrangement.spacedBy(4.dp),
     ) {
         Form.section(strings.beaconSectionFor(state.mainCategoryName)) {
-            Form.check(strings.beaconEnabled, state.bcn_beaconsEnabledMainCat) {
+            Form.check(strings.beaconEnabled, mainEnabled == true) {
                 state.bcn_beaconsEnabledMainCat = it
             }
             Form.committed(
@@ -36,7 +40,7 @@ fun BeaconTab(state: BeaconTabState, onRefused: (String) -> Unit) {
         }
 
         Form.section(strings.beaconSectionFor(state.secondCategoryName)) {
-            Form.check(strings.beaconEnabled, state.bcn_beaconsEnabledSecondCat) {
+            Form.check(strings.beaconEnabled, secondEnabled == true) {
                 state.bcn_beaconsEnabledSecondCat = it
             }
             Form.committed(

app-desktop/src/main/kotlin/kst4contest/view/compose/tabs/BeaconTabState.kt

@@ -12,8 +12,9 @@ import kst4contest.view.compose.setting
  * The two commit methods are the ports of `applyBeaconTextSetting` and
  * `applySharedBeaconInterval`. Both returned nothing and opened an alert; here they
  * return the refusal text instead, so the tab decides how to show it and a test can
- * read it. An accepted value is staged in the window's [SettingsDraft] and takes effect
+ * read it. Accepted templates and intervals are staged in the window's [SettingsDraft]
- * when the operator applies it; a refused one never gets there.
+ * and take effect when the operator applies them. The two enable switches deliberately
+ * bypass the draft so the running timer sees their values immediately.
  *
  * @param validateBeaconTemplate throws IllegalArgumentException with the reason,
  *        the contract of `ChatController.validateBeaconTemplate`.
@@ -27,15 +28,20 @@ class BeaconTabState(
     private val restartBeaconTimer: () -> Unit,
     val mainCategoryName: String,
     val secondCategoryName: String,
+    private val setMainBeaconEnabled: (Boolean) -> Unit = prefs::setBcn_beaconsEnabledMainCat,
+    private val setSecondBeaconEnabled: (Boolean) -> Unit = prefs::setBcn_beaconsEnabledSecondCat,
 ) {
 
-    var bcn_beaconsEnabledMainCat: Boolean by draft.setting(
+    val mainBeaconEnabled = prefs.bcnBeaconsEnabledMainCatProperty()
-        { prefs.isBcn_beaconsEnabledMainCat() },
+    val secondBeaconEnabled = prefs.bcnBeaconsEnabledSecondCatProperty()
-    ) { prefs.setBcn_beaconsEnabledMainCat(it) }
 
-    var bcn_beaconsEnabledSecondCat: Boolean by draft.setting(
+    var bcn_beaconsEnabledMainCat: Boolean
-        { prefs.isBcn_beaconsEnabledSecondCat() },
+        get() = prefs.isBcn_beaconsEnabledMainCat()
-    ) { prefs.setBcn_beaconsEnabledSecondCat(it) }
+        set(value) = setMainBeaconEnabled(value)
+
+    var bcn_beaconsEnabledSecondCat: Boolean
+        get() = prefs.isBcn_beaconsEnabledSecondCat()
+        set(value) = setSecondBeaconEnabled(value)
 
     private var textMainCat: String by draft.setting(
         { prefs.getBcn_beaconTextMainCat() },
@@ -69,7 +75,7 @@ class BeaconTabState(
      *
      * The clamp is not cosmetic: a stored zero would otherwise be displayed as a
      * valid setting while `ChatController` sends at the minimum anyway
-     * (ChatController:3425). The JavaFX field applied the same `Math.max` when it
+     * when scheduling the timer. The JavaFX field applied the same `Math.max` when it
      * restored the value after a rejected entry.
      */
     val beaconIntervalMinutes: Int

app-desktop/src/main/kotlin/kst4contest/view/compose/tabs/StationTab.kt

@@ -1,12 +1,15 @@
 package kst4contest.view.compose.tabs
 
 import kst4contest.view.i18n.LocalStrings
+import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.foundation.TooltipArea
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
 import kst4contest.view.compose.Form
+import kst4contest.view.compose.TooltipCard
 
 /**
  * The Station tab: own station, server, active bands and path-analysis defaults.
@@ -16,6 +19,7 @@ import kst4contest.view.compose.Form
  *
  * @param onRefused shows why a committed entry was refused (the own ground height)
  */
+@OptIn(ExperimentalFoundationApi::class)
 @Composable
 fun StationTab(state: StationTabState, onRefused: (String) -> Unit = {}) {
     val strings = LocalStrings.current
@@ -86,10 +90,32 @@ fun StationTab(state: StationTabState, onRefused: (String) -> Unit = {}) {
 
         Form.section(strings.stationDefaultsSection) {
             Form.decimal(strings.stationMaxQrb, state.stn_maxQRBDefault) { state.stn_maxQRBDefault = it }
-            Form.decimal(strings.stationQtf, state.stn_qtfDefault) { state.stn_qtfDefault = it }
+            Form.decimal(
+                label = strings.stationQtf,
+                value = state.stn_qtfDefault,
+                isValid = { it.isFinite() && it in 0.0..360.0 },
+            ) { state.stn_qtfDefault = it }
             Form.decimal(strings.stationBeamWidth, state.stn_antennaBeamWidthDeg) { state.stn_antennaBeamWidthDeg = it }
         }
 
+        Form.panelSection(strings.stationManualAntennaHeadingSection) {
+            val headingOption: @Composable () -> Unit = {
+                Form.check(
+                    strings.stationUseQtfFilterDirectionAsAntennaHeading,
+                    state.stn_useQtfFilterDirectionAsAntennaHeading,
+                    enabled = !state.stn_pstRotatorEnabled,
+                ) { state.stn_useQtfFilterDirectionAsAntennaHeading = it }
+            }
+            if (state.stn_pstRotatorEnabled) {
+                TooltipArea(
+                    tooltip = { TooltipCard(strings.stationManualAntennaHeadingRotatorHint) },
+                    content = headingOption,
+                )
+            } else {
+                headingOption()
+            }
+        }
+
         Form.section(strings.stationRotatorSection) {
             Form.check(strings.stationRotatorEnabled, state.stn_pstRotatorEnabled) { state.stn_pstRotatorEnabled = it }
             Form.text(strings.stationRotatorHost, state.stn_pstRotatorHost) { state.stn_pstRotatorHost = it }

app-desktop/src/main/kotlin/kst4contest/view/compose/tabs/StationTabState.kt

@@ -44,6 +44,10 @@ class StationTabState(
      * TRX synch tab through [SECOND_ROTATOR], so it runs once per apply.
      */
     private val applySecondRotator: () -> Unit = {},
+    /** Recomputes status whose available-count depends on the second-chat switch. */
+    private val refreshBeaconStatus: () -> Unit = {},
+    /** Repaints applied beam geometry and dependent QTF results in the running UI. */
+    private val applyMapDisplaySettings: () -> Unit = {},
 ) {
 
     var loginChatCategoryMain: ChatCategory?
@@ -55,7 +59,11 @@ class StationTabState(
         get() = prefs.getLoginChatCategorySecond()
         set(value) { prefs.setLoginChatCategorySecond(value) }
 
-    var stn_antennaBeamWidthDeg: Double by draft.setting({ prefs.getStn_antennaBeamWidthDeg() }) { prefs.setStn_antennaBeamWidthDeg(it) }
+    var stn_antennaBeamWidthDeg: Double by draft.setting(
+        { prefs.getStn_antennaBeamWidthDeg() },
+        effectKey = MAP_DISPLAY_SETTINGS,
+        effect = applyMapDisplaySettings,
+    ) { prefs.setStn_antennaBeamWidthDeg(it) }
 
     var stn_bandActive10G: Boolean by draft.setting({ prefs.isStn_bandActive10G() }) { prefs.setStn_bandActive10G(it) }
 
@@ -95,7 +103,11 @@ class StationTabState(
         get() = prefs.getStn_loginPassword()
         set(value) { prefs.setStn_loginPassword(value) }
 
-    var stn_maxQRBDefault: Double by draft.setting({ prefs.getStn_maxQRBDefault() }) { prefs.setStn_maxQRBDefault(it) }
+    var stn_maxQRBDefault: Double by draft.setting(
+        { prefs.getStn_maxQRBDefault() },
+        effectKey = MAP_DISPLAY_SETTINGS,
+        effect = applyMapDisplaySettings,
+    ) { prefs.setStn_maxQRBDefault(it) }
 
     var stn_on4kstServersDns: String by draft.setting({ prefs.getStn_on4kstServersDns() }) { prefs.setStn_on4kstServersDns(it) }
 
@@ -165,7 +177,13 @@ class StationTabState(
         return null
     }
 
-    var stn_pstRotatorEnabled: Boolean by draft.setting({ prefs.isStn_pstRotatorEnabled() }) { prefs.setStn_pstRotatorEnabled(it) }
+    var stn_pstRotatorEnabled: Boolean by draft.setting(
+        { prefs.isStn_pstRotatorEnabled() },
+    ) { prefs.setStn_pstRotatorEnabled(it) }
+
+    var stn_useQtfFilterDirectionAsAntennaHeading: Boolean by draft.setting(
+        { prefs.isStn_useQtfFilterDirectionAsAntennaHeading() },
+    ) { prefs.setStn_useQtfFilterDirectionAsAntennaHeading(it) }
 
     var stn_pstRotatorHost: String by draft.setting({ prefs.getStn_pstRotatorHost() }) { prefs.setStn_pstRotatorHost(it) }
 
@@ -228,7 +246,10 @@ class StationTabState(
      * pickers it governs. It decides what the Connect button does, so it belongs with
      * the login settings and not with the display options.
      */
-    var loginToSecondChatEnabled: Boolean by draft.setting({ prefs.isLoginToSecondChatEnabled() }) { prefs.setLoginToSecondChatEnabled(it) }
+    var loginToSecondChatEnabled: Boolean by draft.setting(
+        { prefs.isLoginToSecondChatEnabled() },
+        effect = { refreshBeaconStatus() },
+    ) { prefs.setLoginToSecondChatEnabled(it) }
 
     /**
      * Whether the login fields may be edited. The JavaFX window disabled callsign,
@@ -283,6 +304,9 @@ class StationTabState(
         /** The effect key of everything that restarts rotator 2; shared with the TRX synch tab. */
         const val SECOND_ROTATOR: String = "secondRotator"
 
+        /** Shared effect for the two settings that define the map's antenna sector. */
+        const val MAP_DISPLAY_SETTINGS: String = "mapDisplaySettings"
+
         /**
          * Whether two PSTRotator ports collide: the same port, or one apart because
          * PSTRotator answers on port + 1, which would be the other client's local port.

app-desktop/src/test/java/kst4contest/view/RosterListBindingTest.java

@@ -1,12 +1,19 @@
 package kst4contest.view;
 
+import kst4contest.model.ChatCategory;
+import kst4contest.model.ChatMember;
+import kst4contest.model.ChatMessage;
 import kst4contest.observe.DirectUiDispatcher;
 import kst4contest.observe.SimpleRoster;
+import kst4contest.view.compose.SelectedMessageFilter;
+import kst4contest.view.compose.SelectedStationMessagePredicate;
 import org.junit.jupiter.api.Test;
 
 import java.util.Comparator;
 import java.util.List;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicReference;
+import java.util.function.Predicate;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
@@ -136,6 +143,39 @@ class RosterListBindingTest {
                 "a newly set filter must be visible without waiting for the next roster change");
     }
 
+    @Test
+    void selectedStationMessagesFollowNewMessagesAndSelectionChanges() {
+        ChatMember first = member("DL1FIRST", 2);
+        ChatMember second = member("DL2SECOND", 2);
+        SimpleRoster<ChatMessage> messages = new SimpleRoster<>();
+        AtomicReference<Predicate<ChatMessage>> filter = new AtomicReference<>(
+                SelectedStationMessagePredicate.forSelection(
+                        SelectedMessageFilter.PUBLIC, first, "DL0OWN"));
+
+        RosterListBinding<ChatMessage> binding = RosterListBinding.derived(
+                new DirectUiDispatcher(),
+                () -> messages.snapshot().stream().filter(filter.get()).toList(),
+                messages);
+
+        ChatMessage unrelated = publicMessage(second);
+        messages.add(unrelated);
+        assertTrue(binding.list().isEmpty());
+
+        ChatMessage matching = publicMessage(first);
+        messages.add(matching);
+        assertEquals(List.of(matching), List.copyOf(binding.list()));
+
+        filter.set(SelectedStationMessagePredicate.forSelection(
+                SelectedMessageFilter.PUBLIC, second, "DL0OWN"));
+        binding.refresh();
+        assertEquals(List.of(unrelated), List.copyOf(binding.list()),
+                "the former station's messages must disappear immediately");
+
+        ChatMessage next = publicMessage(second);
+        messages.add(next);
+        assertEquals(List.of(unrelated, next), List.copyOf(binding.list()));
+    }
+
     @Test
     void aDisposedDerivedBindingDetachesFromEverySource() {
         SimpleRoster<String> members = new SimpleRoster<>();
@@ -150,4 +190,20 @@ class RosterListBindingTest {
 
         assertTrue(binding.list().isEmpty());
     }
+
+    private static ChatMember member(String callSign, int category) {
+        ChatMember member = new ChatMember();
+        member.setCallSign(callSign);
+        member.setChatCategory(new ChatCategory(category));
+        return member;
+    }
+
+    private static ChatMessage publicMessage(ChatMember sender) {
+        ChatMessage message = new ChatMessage();
+        message.setSender(sender);
+        message.setReceiver(member("ALL", sender.getChatCategory().getCategoryNumber()));
+        message.setChatCategory(sender.getChatCategory());
+        message.setMessageText("test");
+        return message;
+    }
 }

app-desktop/src/test/java/kst4contest/view/SelectedStationMessageFlowTest.java

@@ -0,0 +1,180 @@
+package kst4contest.view;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import java.util.List;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.atomic.AtomicReference;
+import java.util.function.Predicate;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Timeout;
+
+import kst4contest.ApplicationConstants;
+import kst4contest.controller.ChatController;
+import kst4contest.controller.MessageBusManagementThread;
+import kst4contest.controller.ScoreService;
+import kst4contest.controller.StationMetricsService;
+import kst4contest.controller.ThreadStatusCallback;
+import kst4contest.model.AirPlaneReflectionInfo;
+import kst4contest.model.ChatCategory;
+import kst4contest.model.ChatMember;
+import kst4contest.model.ChatMessage;
+import kst4contest.model.ChatPreferences;
+import kst4contest.observe.DirectUiDispatcher;
+import kst4contest.observe.SimpleRoster;
+import kst4contest.observe.SimpleValue;
+import kst4contest.view.compose.DataTableState;
+import kst4contest.view.compose.RowKeys;
+import kst4contest.view.compose.SelectedMessageFilter;
+import kst4contest.view.compose.SelectedStationMessagePredicate;
+import kst4contest.view.feed.SelectedStationMessagesFeed;
+
+/** Exercises protocol parsing, selected-station filtering and the displayed table together. */
+class SelectedStationMessageFlowTest {
+
+    private static final String OWN_CALL = "DL0OWN";
+    private static final String SELECTED_CALL = "DM5M";
+
+    private final LinkedBlockingQueue<ChatMessage> receiveQueue = new LinkedBlockingQueue<>();
+    private final SimpleRoster<ChatMessage> messages = new SimpleRoster<>();
+    private final AtomicReference<Predicate<ChatMessage>> filter = new AtomicReference<>();
+
+    private ChatController controller;
+    private ChatPreferences preferences;
+    private ChatMember selected;
+    private RosterListBinding<ChatMessage> binding;
+    private DataTableState<ChatMessage> displayed;
+
+    @BeforeEach
+    void setUp() {
+        preferences = mock(ChatPreferences.class);
+        when(preferences.getStn_loginCallSign()).thenReturn(OWN_CALL);
+        when(preferences.getStn_loginLocatorMainCat()).thenReturn("JO50LL");
+        when(preferences.getMYQRGFirstCat()).thenReturn(new SimpleValue<>("144.300"));
+        when(preferences.getMYQRGSecondCat()).thenReturn(new SimpleValue<>("1296.200"));
+
+        controller = mock(ChatController.class);
+        when(controller.getChatPreferences()).thenReturn(preferences);
+        when(controller.getChatCategoryMain()).thenReturn(new ChatCategory(ChatCategory.VUHF));
+        when(controller.getChatCategorySecondChat()).thenReturn(new ChatCategory(ChatCategory.MICROWAVE));
+        when(controller.getStationMetricsService()).thenReturn(mock(StationMetricsService.class));
+        when(controller.getScoreService()).thenReturn(mock(ScoreService.class));
+        when(controller.findActiveChatMember(any(ChatMember.class)))
+                .thenAnswer(invocation -> activeMember(invocation.getArgument(0)));
+        doAnswer(invocation -> {
+            messages.add(invocation.getArgument(0));
+            return null;
+        }).when(controller).publishChatMessage(any(ChatMessage.class));
+
+        selected = member(SELECTED_CALL, ChatCategory.VUHF);
+        filter.set(SelectedStationMessagePredicate.forSelection(
+                SelectedMessageFilter.PM_TO_ME, selected, OWN_CALL));
+
+        displayed = new DataTableState<>(List.of(), RowKeys.INSTANCE.byReference(), "selected-flow-test");
+        SelectedStationMessagesFeed feed =
+                new SelectedStationMessagesFeed(displayed, new DirectUiDispatcher());
+        binding = RosterListBinding.derived(
+                new DirectUiDispatcher(),
+                () -> messages.snapshot().stream().filter(filter.get()).toList(),
+                messages);
+        binding.onChanged(feed::push);
+        feed.push(binding.list());
+    }
+
+    @Test
+    @Timeout(10)
+    void realisticFramesReachTheDisplayedRowsUnderAllFourModes() throws InterruptedException {
+        runThrough(
+                chatFrame(2, SELECTED_CALL, "private", OWN_CALL),
+                chatFrame(2, SELECTED_CALL, "(" + OWN_CALL + ") public reply", "0"),
+                chatFrame(2, SELECTED_CALL, "general public message", "0"),
+                chatFrame(2, SELECTED_CALL, "private to another station", "DL2OTHER"),
+                chatFrame(2, "DL2OTHER", "other station", "0"),
+                chatFrame(3, SELECTED_CALL, "same call, other category", "0"));
+
+        assertEquals(2, displayed.getRows().size(),
+                "pm to me must contain the genuine PM and the explicitly addressed public line");
+
+        selectMode(SelectedMessageFilter.PUBLIC);
+        assertEquals(2, displayed.getRows().size(),
+                "the two public lines overlap with the addressed-public PM view");
+
+        selectMode(SelectedMessageFilter.PM_TO_OTHER);
+        assertEquals(1, displayed.getRows().size(),
+                "pm to other keeps private traffic sent by the selected station to another station");
+
+        selectMode(SelectedMessageFilter.NOTHING);
+        assertEquals(4, displayed.getRows().size(),
+                "nothing removes only the type/receiver restriction");
+
+        selectStation(member("DL2OTHER", ChatCategory.VUHF));
+        assertEquals(2, displayed.getRows().size(),
+                "changing the selected station must replace the displayed station scope immediately");
+        selectStation(member(SELECTED_CALL, ChatCategory.VUHF));
+
+        runThrough(chatFrame(2, SELECTED_CALL, "new while the panel is open", OWN_CALL));
+        assertEquals(5, displayed.getRows().size(),
+                "a new matching line must reach the already open table");
+    }
+
+    private void selectMode(SelectedMessageFilter mode) {
+        filter.set(SelectedStationMessagePredicate.forSelection(mode, selected, OWN_CALL));
+        binding.refresh();
+    }
+
+    private void selectStation(ChatMember station) {
+        selected = station;
+        selectMode(SelectedMessageFilter.NOTHING);
+    }
+
+    private void runThrough(ChatMessage... frames) throws InterruptedException {
+        MessageBusManagementThread thread = new MessageBusManagementThread(
+                controller,
+                mock(ThreadStatusCallback.class),
+                11L,
+                receiveQueue,
+                ignored -> true);
+        for (ChatMessage frame : frames) {
+            receiveQueue.add(frame);
+        }
+        receiveQueue.add(poisonPill());
+        thread.start();
+        thread.join();
+    }
+
+    private static ChatMessage chatFrame(int category, String sender, String text, String receiver) {
+        return wireMessage("CH|" + category + "|1700000000|" + sender
+                + "|Operator|0|" + text + "|" + receiver + "|");
+    }
+
+    private static ChatMessage poisonPill() {
+        ChatMessage message = wireMessage(ApplicationConstants.DISCONNECT_RDR_POISONPILL);
+        message.setMessageSenderName(ApplicationConstants.DISCONNECT_RDR_POISONPILL);
+        return message;
+    }
+
+    private static ChatMessage wireMessage(String text) {
+        ChatMessage message = new ChatMessage();
+        message.setMessageText(text);
+        return message;
+    }
+
+    private static ChatMember activeMember(ChatMember lookup) {
+        return member(lookup.getCallSign(), lookup.getChatCategory().getCategoryNumber());
+    }
+
+    private static ChatMember member(String callSign, int category) {
+        ChatMember member = new ChatMember();
+        member.setCallSign(callSign);
+        member.setChatCategory(new ChatCategory(category));
+        member.setQra("JO31AA");
+        member.setAirPlaneReflectInfo(new AirPlaneReflectionInfo());
+        return member;
+    }
+}

app-desktop/src/test/kotlin/kst4contest/view/ComposeMessageTableRefreshTest.kt

@@ -0,0 +1,60 @@
+package kst4contest.view
+
+import kst4contest.controller.ChatController
+import kst4contest.model.ChatMessage
+import kst4contest.view.compose.DataTableState
+import kst4contest.view.compose.RowKeys
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Test
+import org.mockito.Mockito.mock
+import org.mockito.Mockito.`when`
+
+class ComposeMessageTableRefreshTest {
+
+    @Test
+    fun `refresh keeps public table on the filtered controller view`() {
+        val controller = mock(ChatController::class.java)
+        val privateToMe = message("private to me")
+        val publicInitial = message("public initial")
+        val betweenOthers = message("between others")
+        val directed = table()
+        val publicMessages = table()
+        val qsoOfTheOther = table()
+
+        `when`(controller.toMeMessages()).thenReturn(listOf(privateToMe))
+        `when`(controller.toAllMessages()).thenReturn(listOf(publicInitial))
+        `when`(controller.toOtherMessages()).thenReturn(listOf(betweenOthers))
+
+        Kst4ContestApplication.refreshComposeMessageTables(
+            controller,
+            directed,
+            publicMessages,
+            qsoOfTheOther,
+        )
+
+        assertEquals(listOf(privateToMe), directed.rows)
+        assertEquals(listOf(publicInitial), publicMessages.rows)
+        assertEquals(listOf(betweenOthers), qsoOfTheOther.rows)
+
+        val publicLater = message("public later")
+        `when`(controller.toAllMessages()).thenReturn(listOf(publicLater, publicInitial))
+
+        Kst4ContestApplication.refreshComposeMessageTables(
+            controller,
+            directed,
+            publicMessages,
+            qsoOfTheOther,
+        )
+
+        assertEquals(listOf(publicLater, publicInitial), publicMessages.rows)
+    }
+
+    private fun table() = DataTableState(
+        columns = emptyList(),
+        rowKey = RowKeys.byReference<ChatMessage>(),
+    )
+
+    private fun message(text: String) = ChatMessage().apply {
+        messageText = text
+    }
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/ChatInputRowSo2rScreenTest.kt

@@ -3,19 +3,23 @@ package kst4contest.view.compose
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.setValue
+import androidx.compose.ui.text.input.TextFieldValue
 import androidx.compose.ui.test.ExperimentalTestApi
 import androidx.compose.ui.test.assertCountEquals
 import androidx.compose.ui.test.assertIsNotEnabled
 import androidx.compose.ui.test.onAllNodesWithText
 import androidx.compose.ui.test.onNodeWithText
 import androidx.compose.ui.test.runComposeUiTest
+import androidx.compose.ui.unit.dp
 import kst4contest.model.ChatCategory
 import kst4contest.model.ChatMember
 import kst4contest.model.ChatMessage
 import kst4contest.model.ChatPreferences
+import org.junit.jupiter.api.Assertions.assertTrue
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.io.TempDir
 import java.nio.file.Path
+import kotlin.math.abs
 
 /** The send line with SO2R: the display-only QTF2 field appears only while SO2R is on. */
 @OptIn(ExperimentalTestApi::class)
@@ -66,4 +70,53 @@ class ChatInputRowSo2rScreenTest {
         onNodeWithText("270.0").assertExists()
         onNodeWithText("270.0").assertIsNotEnabled()
     }
+
+    @Test
+    fun `send buttons message and station fields share height and preserve realistic values`() = runComposeUiTest {
+        val prefs = prefs().apply {
+            getMYQRGFirstCat().set("1296.123.000")
+            getMYQRGSecondCat().set("144.310.000")
+            getActualQTF().set(360.0)
+        }
+        val state = chatInputStateFor(prefs).apply {
+            value = TextFieldValue("/cq OK1IN test test test aasdasd ggggg asd asd gggg")
+        }
+        setContent {
+            Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
+                ChatInputRow(
+                    state = state,
+                    prefs = prefs,
+                    ownQrgMain = ObservedValue(prefs.getMYQRGFirstCat()),
+                    ownQrgSecond = ObservedValue(prefs.getMYQRGSecondCat()),
+                    antennaQtf = ObservedValue(prefs.getActualQTF()),
+                    antennaQtf2 = ObservedValue(prefs.getActualQTF2()),
+                    so2rEnabled = false,
+                )
+            }
+        }
+
+        val values = listOf("1296.123.000", "144.310.000", "360.0")
+        val heights = listOf("TX", "clear")
+            .map { onNodeWithText(it).fetchSemanticsNode().boundsInRoot.height } +
+            values.map { onNodeWithText(it).fetchSemanticsNode().boundsInRoot.height }
+        assertTrue(
+            heights.max() - heights.min() <= 1f,
+            "send-row control heights differ: $heights",
+        )
+
+        val minimumQrgWidth = with(density) { 96.dp.toPx() }
+        values.take(2).forEach { value ->
+            val width = onNodeWithText(value).fetchSemanticsNode().boundsInRoot.width
+            assertTrue(width >= minimumQrgWidth - 1f, "$value has only $width px")
+        }
+        val qtfWidth = onNodeWithText("360.0").fetchSemanticsNode().boundsInRoot.width
+        assertTrue(
+            abs(qtfWidth - with(density) { 56.dp.toPx() }) <= 1f,
+            "360.0 field is $qtfWidth px wide",
+        )
+        assertTrue(
+            abs(onNodeWithText("TX").fetchSemanticsNode().boundsInRoot.height -
+                with(density) { 26.dp.toPx() }) <= 1f,
+        )
+    }
 }

app-desktop/src/test/kotlin/kst4contest/view/compose/CompactControlsScreenTest.kt

@@ -0,0 +1,149 @@
+package kst4contest.view.compose
+
+import androidx.compose.foundation.layout.Column
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.test.ExperimentalTestApi
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.performClick
+import androidx.compose.ui.test.runComposeUiTest
+import androidx.compose.ui.unit.dp
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+import kotlin.math.abs
+
+/** Shared fields and choices use the same compact desktop height. */
+@OptIn(ExperimentalTestApi::class)
+class CompactControlsScreenTest {
+
+    @Test
+    fun fieldsChoicesAndButtonsShareTheDesktopControlHeight() = runComposeUiTest {
+        setContent {
+            Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
+                Column {
+                    CompactTextField(value = "144.310.000", onValueChange = {})
+                    Form.inlineChoice(
+                        label = "Reachability",
+                        items = listOf("Auto"),
+                        selected = "Auto",
+                        describe = { it },
+                        onSelect = {},
+                    )
+                    Form.button(text = "TX", onClick = {})
+                    Form.button(text = "Filter", onClick = {})
+                }
+            }
+        }
+
+        val heights = listOf("144.310.000", "Auto", "TX", "Filter")
+            .map { onNodeWithText(it).fetchSemanticsNode().boundsInRoot.height }
+        val targetHeight = with(density) { 26.dp.toPx() }
+
+        assertTrue(
+            heights.all { abs(it - targetHeight) <= 1f },
+            "controls are $heights px tall instead of $targetHeight px",
+        )
+        assertTrue(
+            heights.max() - heights.min() <= 1f,
+            "control heights differ by more than one pixel: $heights",
+        )
+    }
+
+    @Test
+    fun accentAndToggleButtonsShareEnabledAndDisabledClickBehaviour() = runComposeUiTest {
+        var accentClicks = 0
+        var disabledClicks = 0
+        setContent {
+            Kst4ContestTheme(darkMode = true, baseFontSizeSp = 12f) {
+                Column {
+                    Form.button(
+                        text = "Accent",
+                        accented = true,
+                        onClick = { accentClicks++ },
+                    )
+                    Form.button(
+                        text = "Selected",
+                        selected = true,
+                        onClick = {},
+                    )
+                    Form.button(
+                        text = "Disabled accent",
+                        enabled = false,
+                        accented = true,
+                        onClick = { disabledClicks++ },
+                    )
+                }
+            }
+        }
+
+        onNodeWithText("Accent").performClick()
+        onNodeWithText("Disabled accent").performClick()
+
+        assertEquals(1, accentClicks)
+        assertEquals(0, disabledClicks)
+        assertTrue(onNodeWithText("Selected").fetchSemanticsNode().boundsInRoot.height < 40f)
+    }
+
+    @Test
+    fun controlsStayAlignedAt125PercentDensityInEveningDesign() = runComposeUiTest {
+        setContent {
+            CompositionLocalProvider(
+                LocalDensity provides androidx.compose.ui.unit.Density(1.25f),
+            ) {
+                Kst4ContestTheme(darkMode = true, baseFontSizeSp = 12f) {
+                    Column {
+                        CompactTextField(value = "10368.000", onValueChange = {})
+                        Form.inlineChoice(
+                            label = "Reachability",
+                            items = listOf("Auto"),
+                            selected = "Auto",
+                            describe = { it },
+                            onSelect = {},
+                        )
+                        Form.button(text = "TX", onClick = {})
+                    }
+                }
+            }
+        }
+
+        val heights = listOf("10368.000", "Auto", "TX")
+            .map { onNodeWithText(it).fetchSemanticsNode().boundsInRoot.height }
+        val expected = 26f * 1.25f
+        assertTrue(
+            heights.all { abs(it - expected) <= 1f },
+            "125% controls are $heights px tall instead of about $expected px",
+        )
+        assertTrue(
+            heights.max() - heights.min() <= 1f,
+            "125% control heights differ by more than one pixel: $heights",
+        )
+    }
+
+    @Test
+    fun controlsGrowTogetherInsteadOfClippingALargerConfiguredFont() = runComposeUiTest {
+        setContent {
+            Kst4ContestTheme(darkMode = false, baseFontSizeSp = 24f) {
+                Column {
+                    CompactTextField(value = "1296.123.000", onValueChange = {})
+                    Form.inlineChoice(
+                        label = "Reachability",
+                        items = listOf("Auto"),
+                        selected = "Auto",
+                        describe = { it },
+                        onSelect = {},
+                    )
+                    Form.button(text = "TX", onClick = {})
+                }
+            }
+        }
+
+        val heights = listOf("1296.123.000", "Auto", "TX")
+            .map { onNodeWithText(it).fetchSemanticsNode().boundsInRoot.height }
+        assertTrue(heights.min() > with(density) { 26.dp.toPx() })
+        assertTrue(
+            heights.max() - heights.min() <= 1f,
+            "large-font controls do not grow together: $heights",
+        )
+    }
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/CompactControlsVisualRenderingTest.kt

@@ -0,0 +1,116 @@
+package kst4contest.view.compose
+
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.ui.ImageComposeScene
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.input.TextFieldValue
+import androidx.compose.ui.unit.Density
+import androidx.compose.ui.unit.dp
+import kst4contest.model.Band
+import kst4contest.model.ChatCategory
+import kst4contest.model.ChatMember
+import kst4contest.model.ChatMessage
+import kst4contest.model.ChatPreferences
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.io.TempDir
+import java.nio.file.Files
+import java.nio.file.Path
+import java.util.EnumSet
+
+/** Renders the compact control strips for visual inspection in both supported palettes. */
+class CompactControlsVisualRenderingTest(@param:TempDir private val tempDir: Path) {
+
+    @Test
+    fun rendersDayAndEveningControlsAt100And125Percent() {
+        val reportDirectory = Path.of("build", "reports", "compact-controls")
+        Files.createDirectories(reportDirectory)
+
+        listOf(false, true).forEach { darkMode ->
+            listOf(1f, 1.25f).forEach { scale ->
+                val bytes = render(darkMode, scale)
+                val palette = if (darkMode) "evening" else "day"
+                val scaling = if (scale == 1f) "100" else "125"
+                Files.write(reportDirectory.resolve("$palette-$scaling.png"), bytes)
+                assertTrue(bytes.size > 10_000, "$palette at $scaling% did not render")
+            }
+        }
+    }
+
+    private fun render(darkMode: Boolean, scale: Float): ByteArray {
+        val preferences = ChatPreferences(tempDir.resolve("preferences-$darkMode-$scale.xml")).apply {
+            getMYQRGFirstCat().set("1296.123.000")
+            getMYQRGSecondCat().set("144.310.000")
+            getActualQTF().set(360.0)
+        }
+        val chatInputState = ChatInputState(RenderActions(preferences)).apply {
+            value = TextFieldValue("/cq OK1IN test test test aasdasd ggggg asd asd gggg")
+        }
+        val filters = StationFilterState()
+
+        return onEventThread {
+            val scene = ImageComposeScene(width = 1366, height = 380, density = Density(scale)) {
+                Kst4ContestTheme(darkMode = darkMode, baseFontSizeSp = 12f) {
+                    Surface(
+                        modifier = Modifier.fillMaxSize(),
+                        color = MaterialTheme.colorScheme.background,
+                    ) {
+                        Column(Modifier.padding(4.dp)) {
+                            TimelineView(
+                                state = TimelineState(),
+                                onCandidateClicked = {},
+                                modifier = Modifier.fillMaxWidth(),
+                            )
+                            Spacer(Modifier.height(8.dp))
+                            StationFilterBar(
+                                filters = filters,
+                                activeBands = EnumSet.of(Band.B_144, Band.B_432, Band.B_1296),
+                                reachability = ReachabilityState(
+                                    EnumSet.of(Band.B_144, Band.B_432, Band.B_1296),
+                                ),
+                                onChanged = {},
+                            )
+                            Spacer(Modifier.height(12.dp))
+                            ChatInputRow(
+                                state = chatInputState,
+                                prefs = preferences,
+                                ownQrgMain = ObservedValue(preferences.getMYQRGFirstCat()),
+                                ownQrgSecond = ObservedValue(preferences.getMYQRGSecondCat()),
+                                antennaQtf = ObservedValue(preferences.getActualQTF()),
+                                antennaQtf2 = ObservedValue(preferences.getActualQTF2()),
+                                so2rEnabled = false,
+                            )
+                        }
+                    }
+                }
+            }
+            try {
+                scene.render().encodeToData()!!.bytes
+            } finally {
+                scene.close()
+            }
+        }
+    }
+
+    private class RenderActions(private val preferences: ChatPreferences) : ChatInputActions {
+        override fun panelSelection(): ChatMember? = null
+        override fun tableSelection(): ChatMember? = null
+        override fun scoreSelection(): ChatMember? = null
+        override fun resolveVariables(template: String, member: ChatMember?): String = template
+        override fun isAddressedToOwnCallsign(text: String): Boolean = false
+        override fun resolveCategory(text: String, member: ChatMember?): ChatCategory? = null
+        override fun mainCategory(): ChatCategory? = null
+        override fun recordOutboundCq(text: String) = Unit
+        override fun requestRecompute(reason: String) = Unit
+        override fun queue(message: ChatMessage) = Unit
+        override fun ownQrgMain(): String = preferences.getMYQRGFirstCat().get().orEmpty()
+        override fun ownQrgSecond(): String = preferences.getMYQRGSecondCat().get().orEmpty()
+    }
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/ConnectionBarScreenTest.kt

@@ -0,0 +1,103 @@
+package kst4contest.view.compose
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.test.ExperimentalTestApi
+import androidx.compose.ui.test.assertIsEnabled
+import androidx.compose.ui.test.assertIsNotEnabled
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.performClick
+import androidx.compose.ui.test.runComposeUiTest
+import kst4contest.controller.On4KstConnectionState
+import kst4contest.model.ChatPreferences
+import kst4contest.view.compose.tabs.showTab
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.io.TempDir
+import java.nio.file.Path
+
+@OptIn(ExperimentalTestApi::class)
+class ConnectionBarScreenTest(@param:TempDir private val tempDir: Path) {
+
+    @Test
+    fun `button availability follows every manager lifecycle state`() {
+        var connectionState = On4KstConnectionState.DISCONNECTED
+        val state = ConnectionBarState(preferences()) { connectionState }
+
+        On4KstConnectionState.entries.forEach { lifecycle ->
+            connectionState = lifecycle
+            assertEqualsLifecycleRules(lifecycle, state)
+        }
+    }
+
+    @Test
+    fun `async disconnect redraws the open settings connection bar`() = runComposeUiTest {
+        var connectionState by mutableStateOf(On4KstConnectionState.ONLINE)
+        val state = ConnectionBarState(preferences()) { connectionState }
+
+        showTab {
+            ConnectionBar(
+                state = state,
+                onConnect = { },
+                onSave = { },
+                onApplyAndClose = { },
+                onDisconnectAndCloseChat = { },
+                onDisconnectOnly = { },
+            )
+        }
+
+        onNodeWithText("Connect", substring = true).assertIsNotEnabled()
+        onNodeWithText("Disconnect").assertIsEnabled()
+
+        runOnIdle { connectionState = On4KstConnectionState.STOPPING }
+        onNodeWithText("Connect", substring = true).assertIsNotEnabled()
+        onNodeWithText("Disconnect").assertIsNotEnabled()
+
+        runOnIdle { connectionState = On4KstConnectionState.DISCONNECTED }
+        onNodeWithText("Connect", substring = true).assertIsEnabled()
+        onNodeWithText("Disconnect").assertIsNotEnabled()
+    }
+
+    @Test
+    fun `a failed attempt enables one new connection attempt`() = runComposeUiTest {
+        var connectionState by mutableStateOf(On4KstConnectionState.CONNECTING)
+        var attempts = 0
+        val state = ConnectionBarState(preferences()) { connectionState }
+
+        showTab {
+            ConnectionBar(
+                state = state,
+                onConnect = {
+                    attempts++
+                    connectionState = On4KstConnectionState.CONNECTING
+                },
+                onSave = { },
+                onApplyAndClose = { },
+                onDisconnectAndCloseChat = { },
+                onDisconnectOnly = { },
+            )
+        }
+
+        runOnIdle { connectionState = On4KstConnectionState.DISCONNECTED }
+        onNodeWithText("Connect", substring = true).performClick()
+
+        assertTrue(attempts == 1)
+        onNodeWithText("Connect", substring = true).assertIsNotEnabled()
+    }
+
+    private fun assertEqualsLifecycleRules(
+        lifecycle: On4KstConnectionState,
+        state: ConnectionBarState,
+    ) {
+        assertTrue(state.canConnect == (lifecycle == On4KstConnectionState.DISCONNECTED), lifecycle.name)
+        assertTrue(state.canDisconnect == lifecycle.isConnectionAttemptActive, lifecycle.name)
+        if (lifecycle == On4KstConnectionState.STOPPING) {
+            assertFalse(state.canConnect)
+            assertFalse(state.canDisconnect)
+        }
+    }
+
+    private fun preferences() = ChatPreferences(tempDir.resolve("preferences.xml"))
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/DataTableStateTest.kt

@@ -34,6 +34,97 @@ class DataTableStateTest {
         rowKey = RowKeys.byValue { s: Station -> s.callSign },
     )
 
+    @Test
+    fun `an initial sort is applied once and keeps later rows in order`() {
+        val table = DataTableState(
+            columns = listOf(
+                DataColumn(
+                    id = "callsign",
+                    title = "Callsign",
+                    value = { station: Station -> station.callSign },
+                    comparator = compareBy(String.CASE_INSENSITIVE_ORDER) { station: Station ->
+                        station.callSign.trim()
+                    },
+                ),
+            ),
+            rowKey = RowKeys.byValue { station: Station -> station.callSign },
+            initialSortColumnId = "callsign",
+        )
+
+        table.replaceRows(listOf(Station("do5amf", 1), Station("DL1ABC", 2)))
+        assertEquals(listOf("DL1ABC", "do5amf"), table.visibleRows.map { it.callSign })
+
+        table.replaceRows(
+            listOf(Station("ZZ9ZZZ", 3), Station("do5amf", 1), Station("AA1AAA", 4), Station("DL1ABC", 2)),
+        )
+
+        assertEquals(
+            listOf("AA1AAA", "DL1ABC", "do5amf", "ZZ9ZZZ"),
+            table.visibleRows.map { it.callSign },
+        )
+    }
+
+    @Test
+    fun `a user sort replaces the initial sort and survives row and filter updates`() {
+        val table = DataTableState(
+            columns = listOf(
+                DataColumn(id = "callsign", title = "Callsign", value = { station: Station -> station.callSign }),
+                DataColumn(
+                    id = "qrb",
+                    title = "QRB",
+                    value = { station: Station -> station.qrb.toString() },
+                    comparator = compareBy { station: Station -> station.qrb },
+                ),
+            ),
+            rowKey = RowKeys.byValue { station: Station -> station.callSign },
+            initialSortColumnId = "callsign",
+        )
+        table.replaceRows(listOf(Station("B", 300), Station("A", 100)))
+
+        table.toggleSort("qrb")
+        table.rowFilter = { it.qrb >= 100 }
+        table.replaceRows(listOf(Station("C", 200), Station("B", 300), Station("A", 100)))
+
+        assertEquals("qrb", table.sortedColumnId)
+        assertEquals(listOf("A", "C", "B"), table.visibleRows.map { it.callSign })
+    }
+
+    @Test
+    fun `a selected filtered row can be pinned only in the table view`() {
+        val table = DataTableState(
+            columns = listOf(DataColumn(id = "callsign", title = "Callsign", value = { s: Station -> s.callSign })),
+            rowKey = RowKeys.byValue { station: Station -> station.callSign },
+            keepSelectionVisible = true,
+        )
+        val hidden = Station("DL1HIDE", 100)
+        val shown = Station("DL2SHOW", 500)
+        table.replaceRows(listOf(hidden, shown))
+        table.rowFilter = { it.qrb >= 300 }
+
+        table.select(hidden)
+
+        assertEquals(listOf("DL2SHOW"), table.filteredRows.map { it.callSign }, "the shared map filter changed")
+        assertEquals(
+            listOf("DL1HIDE", "DL2SHOW"),
+            table.visibleRows.map { it.callSign },
+            "the selected station was not made reachable in the table",
+        )
+    }
+
+    @Test
+    fun `the same selected row can request scrolling more than once`() {
+        val table = stationTable()
+        val selected = Station("DL1ABC", 100)
+        table.replaceRows(listOf(selected))
+        table.select(selected)
+
+        table.requestScrollToSelection()
+        val first = table.scrollRequestRevision
+        table.requestScrollToSelection()
+
+        assertTrue(table.scrollRequestRevision > first)
+    }
+
     @Test
     fun `the selection follows the row, not its position`() {
         val table = stationTable()
@@ -388,6 +479,24 @@ class DataTableColumnWidthTest {
         assertEquals(140.0, table(store).widthOf("callsign"))
     }
 
+    @Test
+    fun `a stored narrow width wins over the automatic width`() {
+        val store = RecordingStore()
+        store.stored["dx-cluster-monitor/callsign"] = 36.0
+        val table = table(store)
+        val column = table.columns.first { it.id == "callsign" }
+
+        assertEquals(36f, effectiveColumnWidthDp(table, column, mapOf("callsign" to 140f)))
+    }
+
+    @Test
+    fun `the automatic width is used only without a stored width`() {
+        val table = table(RecordingStore())
+        val column = table.columns.first { it.id == "callsign" }
+
+        assertEquals(140f, effectiveColumnWidthDp(table, column, mapOf("callsign" to 140f)))
+    }
+
     @Test
     fun `a column never sized yet has no stored width`() {
         assertNull(table(RecordingStore()).widthOf("qra"),

app-desktop/src/test/kotlin/kst4contest/view/compose/GuiStartupDesignPersistenceTest.kt

@@ -0,0 +1,57 @@
+package kst4contest.view.compose
+
+import kst4contest.model.ChatPreferences
+import kst4contest.view.compose.tabs.GuiOptionsTabState
+import kst4contest.view.i18n.LanguageStore
+import kst4contest.view.i18n.SYSTEM_LANGUAGE
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.io.TempDir
+import java.nio.file.Path
+import java.util.Locale
+
+class GuiStartupDesignPersistenceTest(@param:TempDir private val tempDir: Path) {
+
+    @Test
+    fun `root profile keeps evening startup design across save layout autosave and reload`() {
+        assertStartupDesignSurvives(tempDir.resolve("preferences.xml"))
+    }
+
+    @Test
+    fun `named profile keeps evening startup design across save layout autosave and reload`() {
+        assertStartupDesignSurvives(tempDir.resolve("profiles/CONTEST/preferences.xml"))
+    }
+
+    private fun assertStartupDesignSurvives(preferencesFile: Path) {
+        val preferences = ChatPreferences(preferencesFile)
+        val draft = SettingsDraft()
+        val notices = SettingsNotices()
+        val state = GuiOptionsTabState(preferences, draft, languageStore())
+
+        state.gUI_darkModeActiveByDefault = true
+        applyAndSave(draft, notices) {
+            preferences.writePreferencesToXmlFile()
+                .takeIf { it }
+                ?.let { preferences.storeAndRestorePreferencesFileName }
+        }
+
+        assertTrue(preferences.isGUI_darkModeActiveByDefault)
+
+        // The menu switch is session-only and must not alter the next startup.
+        preferences.isGUI_darkModeActive = false
+        preferences.getGUIsettingsStageSceneSizeHW()[0] = 777.0
+        assertTrue(preferences.writeLayoutPreferencesToXmlFile())
+
+        val restored = ChatPreferences(preferencesFile)
+        assertTrue(restored.readPreferencesFromXmlFile())
+        assertTrue(restored.isGUI_darkModeActiveByDefault)
+        assertFalse(restored.isGUI_darkModeActive)
+    }
+
+    private fun languageStore() = LanguageStore(
+        storedLanguage = { SYSTEM_LANGUAGE },
+        storeLanguage = { },
+        systemDefault = Locale.UK,
+    )
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/MainMenuRowScreenTest.kt

@@ -219,6 +219,29 @@ class MainMenuRowScreenTest {
         onNodeWithText("Show cluster / stranger QSOs").assertDoesNotExist()
     }
 
+    /**
+     * The menu starts at the bar's bottom edge, like any menu bar's menu. Material3's
+     * DropdownMenu cannot do this: its position provider refuses any y closer than 48 dp
+     * (MenuVerticalMargin) to the window's top edge, and the bar sits exactly there, so
+     * every menu opened with a visible gap hanging below the bar.
+     *
+     * The popup-semantics node is a scene-filling layout that positions the menu inside
+     * itself, so its own bounds say nothing; the first item is measured instead, which
+     * sits [MENU_POPUP_VERTICAL_PADDING] below the menu's top edge.
+     */
+    @Test
+    fun theMenuOpensFlushUnderTheBar() = runComposeUiTest {
+        showRow(onlineState(), RecordingActions())
+
+        onNodeWithText("File").performClick()
+        val firstItem = awaitNode(inPopup("Connect to 144/432 MHz"))
+
+        val rowBottom = onNodeWithTag(rowTag).fetchSemanticsNode().boundsInWindow.bottom
+        val itemTop = firstItem.fetchSemanticsNode().boundsInWindow.top
+        val paddingPx = 8f
+        assertEquals(rowBottom + paddingPx, itemTop, 0.5f, "the menu does not start at the bar's bottom edge")
+    }
+
     /** A second click on an open title closes it again, the way a menu bar behaves. */
     @Test
     fun clickingAnOpenTitleClosesIt() = runComposeUiTest {

app-desktop/src/test/kotlin/kst4contest/view/compose/MainWindowStateTest.kt

@@ -120,6 +120,15 @@ class MainWindowSplitterDefaultsTest(@TempDir private val tempDir: Path) {
         val splitter = SplitterState(paneCount = 2, stored = stored) {}
         assertEquals(stored.map { it.toFloat() }, splitter.positions)
     }
+
+    @Test
+    fun `the selected station content splitter takes the one stored profile position`() {
+        val stored = prefs.getGUIselectedCallSignSplitPane_dividerposition()
+        assertEquals(1, stored.size)
+
+        val splitter = SplitterState(paneCount = MainWindowState.SELECTED_STATION_PANE_COUNT, stored = stored) {}
+        assertEquals(stored.map { it.toFloat() }, splitter.positions)
+    }
 }
 
 /**

app-desktop/src/test/kotlin/kst4contest/view/compose/ManualQtfHeadingSynchronizerTest.kt

@@ -0,0 +1,55 @@
+package kst4contest.view.compose
+
+import kst4contest.model.ChatPreferences
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.io.TempDir
+import java.nio.file.Path
+
+class ManualQtfHeadingSynchronizerTest(@param:TempDir private val directory: Path) {
+
+    @Test
+    fun `valid explicit QTF updates actual heading when synchronization is enabled`() {
+        val prefs = preferences().apply {
+            actualQTF.set(20.0)
+        }
+        assertTrue(applyExplicitQtfHeading(prefs, 315.5))
+        assertEquals(315.5, prefs.actualQTF.get(), 0.0001)
+        assertEquals(135.0, prefs.stn_qtfDefault, 0.0001)
+    }
+
+    @Test
+    fun `primary rotator prevents manual QTF synchronization`() {
+        val prefs = preferences().apply {
+            setStn_pstRotatorEnabled(true)
+            actualQTF.set(82.0)
+        }
+        assertFalse(applyExplicitQtfHeading(prefs, 180.0))
+        assertEquals(82.0, prefs.actualQTF.get(), 0.0001)
+    }
+
+    @Test
+    fun `disabled option and invalid angles leave actual heading unchanged`() {
+        val prefs = preferences().apply {
+            setStn_useQtfFilterDirectionAsAntennaHeading(false)
+            actualQTF.set(82.0)
+        }
+        listOf(90.0, Double.NaN, Double.POSITIVE_INFINITY, -0.1, 360.1).forEach { qtf ->
+            assertFalse(applyExplicitQtfHeading(prefs, qtf), "unexpectedly accepted $qtf")
+            assertEquals(82.0, prefs.actualQTF.get(), 0.0001)
+        }
+    }
+
+    @Test
+    fun `zero and 360 follow the existing antenna heading convention`() {
+        val prefs = preferences()
+        assertTrue(applyExplicitQtfHeading(prefs, 0.0))
+        assertEquals(0.0, prefs.actualQTF.get(), 0.0001)
+        assertTrue(applyExplicitQtfHeading(prefs, 360.0))
+        assertEquals(360.0, prefs.actualQTF.get(), 0.0001)
+    }
+
+    private fun preferences() = ChatPreferences(directory.resolve("preferences.xml"))
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/MapReachabilityStateTest.kt

@@ -0,0 +1,66 @@
+package kst4contest.view.compose
+
+import kst4contest.model.Band
+import kst4contest.model.ChatCategory
+import kst4contest.model.ChatMember
+import kst4contest.view.map.PathAnalysisResult
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertNull
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+
+class MapReachabilityStateTest {
+
+    @Test
+    fun `latest station and band request rejects stale results`() {
+        val callbacks = mutableListOf<(PathAnalysisResult) -> Unit>()
+        val state = MapReachabilityState("JO51AA") { _, _, callback -> callbacks += callback }
+        val first = member("DL1ABC", 2, "JN49AA")
+        val second = member("DL2XYZ", 3, "JO60AA")
+
+        assertTrue(state.calculate(first, Band.B_144))
+        assertEquals("Loading", state.result?.analysisMode())
+        assertTrue(state.calculate(second, Band.B_432))
+
+        callbacks[1](result("DL2XYZ", 432.0))
+        callbacks[0](result("DL1ABC", 144.0))
+
+        assertEquals("DL2XYZ", state.result?.toCallsignRaw())
+        assertEquals(432.0, state.result?.analysisFrequencyMHz())
+        assertFalse(state.running)
+    }
+
+    @Test
+    fun `selecting another station invalidates an outstanding explicit result`() {
+        lateinit var callback: (PathAnalysisResult) -> Unit
+        val state = MapReachabilityState("JO51AA") { _, _, result -> callback = result }
+        val first = member("DL1ABC", 2, "JN49AA")
+
+        state.calculate(first, Band.B_144)
+        state.selectionChanged(StationIdentity("DL2XYZ", 2))
+        callback(result("DL1ABC", 144.0))
+
+        assertNull(state.result)
+        assertFalse(state.running)
+    }
+
+    @Test
+    fun `missing station or band does not start a request`() {
+        val state = MapReachabilityState("JO51AA") { _, _, _ -> error("must not run") }
+
+        assertFalse(state.calculate(null, Band.B_144))
+        assertFalse(state.calculate(member("DL1ABC", 2, "JN49AA"), null))
+    }
+
+    private fun member(callSign: String, category: Int, locator: String) = ChatMember().apply {
+        this.callSign = callSign
+        chatCategory = ChatCategory(category)
+        qra = locator
+    }
+
+    private fun result(callSign: String, frequency: Double) = PathAnalysisResult.noProfile(
+        "Calculated", "JO51AA", "JN49AA", callSign,
+        100.0, 180.0, 10.0, 10.0, frequency, "done",
+    )
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/MenuRowPopupPositionProviderTest.kt

@@ -0,0 +1,65 @@
+package kst4contest.view.compose
+
+import androidx.compose.ui.unit.IntOffset
+import androidx.compose.ui.unit.IntRect
+import androidx.compose.ui.unit.IntSize
+import androidx.compose.ui.unit.LayoutDirection
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Test
+
+/**
+ * The menu row's own popup placement, as pure arithmetic.
+ *
+ * Material3's DropdownMenuPositionProvider refuses any y closer than 48 dp to the window's
+ * top edge, which pushed every menu of the bar down to that margin. This provider must not:
+ * a menu-bar menu starts flush under its anchor, whatever the distance to the window edge.
+ */
+class MenuRowPopupPositionProviderTest {
+
+    private val window = IntSize(800, 600)
+    private val menu = IntSize(200, 150)
+
+    private fun positionOf(
+        anchor: IntRect,
+        window: IntSize = this.window,
+        direction: LayoutDirection = LayoutDirection.Ltr,
+        menu: IntSize = this.menu,
+    ) = MenuRowPopupPositionProvider.calculatePosition(
+        anchorBounds = anchor,
+        windowSize = window,
+        layoutDirection = direction,
+        popupContentSize = menu,
+    )
+
+    /** The regression itself: an anchor at the very top gets its menu directly below it. */
+    @Test
+    fun opensFlushUnderAnAnchorAtTheTopOfTheWindow() {
+        val position = positionOf(IntRect(0, 0, 40, 30))
+        assertEquals(IntOffset(0, 30), position)
+    }
+
+    @Test
+    fun staysInsideTheWindowWhenTheAnchorIsNearTheRightEdge() {
+        val position = positionOf(IntRect(760, 0, 800, 30))
+        assertEquals(IntOffset(600, 30), position)
+    }
+
+    @Test
+    fun opensAboveTheAnchorWhenThereIsNoRoomBelow() {
+        val position = positionOf(IntRect(0, 560, 40, 590))
+        assertEquals(IntOffset(0, 410), position)
+    }
+
+    /** No room on either side: pinned to the window's bottom edge rather than clipped. */
+    @Test
+    fun staysInsideAWindowTooSmallForTheMenu() {
+        val position = positionOf(IntRect(0, 40, 40, 70), window = IntSize(800, 100), menu = IntSize(200, 90))
+        assertEquals(IntOffset(0, 10), position)
+    }
+
+    @Test
+    fun alignsTheRightEdgesInRightToLeftLayouts() {
+        val position = positionOf(IntRect(600, 0, 640, 30), direction = LayoutDirection.Rtl)
+        assertEquals(IntOffset(440, 30), position)
+    }
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/MessageTabsScreenTest.kt

@@ -0,0 +1,118 @@
+package kst4contest.view.compose
+
+import androidx.compose.ui.test.ExperimentalTestApi
+import androidx.compose.ui.test.assertIsNotSelected
+import androidx.compose.ui.test.assertIsSelected
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.performClick
+import androidx.compose.ui.test.runComposeUiTest
+import kst4contest.model.ChatCategory
+import kst4contest.model.ChatMember
+import kst4contest.model.ChatMessage
+import kst4contest.model.ClusterMessage
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertSame
+import org.junit.jupiter.api.Test
+
+@OptIn(ExperimentalTestApi::class)
+class MessageTabsScreenTest {
+
+    @Test
+    fun `tab semantics distinguish the active tab and follow selection`() = runComposeUiTest {
+        setContent {
+            Kst4ContestTheme(darkMode = true, baseFontSizeSp = 12f) {
+                MessageTabs(
+                    publicMessages = messageTable(),
+                    clusterMessages = clusterTable(),
+                    qsoOfTheOther = messageTable(),
+                )
+            }
+        }
+
+        onNodeWithText("Public messages").assertIsSelected()
+        onNodeWithText("DXCluster messages").assertIsNotSelected().performClick()
+        waitForIdle()
+        onNodeWithText("Public messages").assertIsNotSelected()
+        onNodeWithText("DXCluster messages").assertIsSelected()
+    }
+
+    @Test
+    fun `a public message row reports its sender selection source`() = runComposeUiTest {
+        val public = messageTable()
+        val message = messageFrom("DL1PUBLIC")
+        public.replaceRows(listOf(message))
+        val clicks = mutableListOf<Pair<ChatMessage, StationSelectionSource>>()
+
+        setContent {
+            Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
+                MessageTabs(
+                    publicMessages = public,
+                    clusterMessages = clusterTable(),
+                    qsoOfTheOther = messageTable(),
+                    onStationMessageClicked = { clicked, source -> clicks += clicked to source },
+                )
+            }
+        }
+        waitForIdle()
+
+        onNodeWithText("DL1PUBLIC").performClick()
+        waitForIdle()
+
+        assertSame(message, clicks.single().first)
+        assertEquals(StationSelectionSource.PUBLIC_MESSAGE, clicks.single().second)
+    }
+
+    @Test
+    fun `a qso of the other row reports its sender selection source`() = runComposeUiTest {
+        val qso = messageTable()
+        val message = messageFrom("DL2QSO")
+        qso.replaceRows(listOf(message))
+        val clicks = mutableListOf<Pair<ChatMessage, StationSelectionSource>>()
+
+        setContent {
+            Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
+                MessageTabs(
+                    publicMessages = messageTable(),
+                    clusterMessages = clusterTable(),
+                    qsoOfTheOther = qso,
+                    onStationMessageClicked = { clicked, source -> clicks += clicked to source },
+                )
+            }
+        }
+        waitForIdle()
+
+        onNodeWithText("QSO of the other").performClick()
+        waitForIdle()
+        onNodeWithText("DL2QSO").performClick()
+        waitForIdle()
+
+        assertSame(message, clicks.single().first)
+        assertEquals(StationSelectionSource.QSO_OF_THE_OTHER, clicks.single().second)
+    }
+
+    private fun messageTable() = DataTableState(
+        columns = listOf(
+            DataColumn(
+                id = "sender",
+                title = "Sender",
+                value = { message: ChatMessage -> message.sender?.callSign.orEmpty() },
+            ),
+        ),
+        rowKey = RowKeys.byReference<ChatMessage>(),
+    )
+
+    private fun clusterTable() = DataTableState(
+        columns = emptyList<DataColumn<ClusterMessage>>(),
+        rowKey = RowKeys.byReference<ClusterMessage>(),
+    )
+
+    private fun messageFrom(callSign: String): ChatMessage = ChatMessage().apply {
+        sender = ChatMember().apply {
+            this.callSign = callSign
+            chatCategory = ChatCategory(2)
+        }
+        receiver = ChatMember().apply { this.callSign = "ALL" }
+        chatCategory = ChatCategory(2)
+        messageText = "test"
+    }
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/MonitorWindowScreenTest.kt

@@ -1,6 +1,12 @@
 package kst4contest.view.compose
 
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.size
+import androidx.compose.ui.Modifier
 import androidx.compose.ui.test.ComposeUiTest
+import androidx.compose.ui.test.getBoundsInRoot
+import androidx.compose.ui.test.onRoot
+import androidx.compose.ui.unit.dp
 import androidx.compose.ui.test.ExperimentalTestApi
 import androidx.compose.ui.test.onAllNodesWithText
 import androidx.compose.ui.test.onNodeWithText
@@ -9,6 +15,7 @@ import kst4contest.model.ChatMember
 import kst4contest.model.ChatMessage
 import kst4contest.model.ClusterMessage
 import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertTrue
 import org.junit.jupiter.api.Test
 
 /**
@@ -56,10 +63,13 @@ class MonitorWindowScreenTest {
     private fun ComposeUiTest.show(
         cluster: DataTableState<ClusterMessage>,
         qsos: DataTableState<ChatMessage>,
+        splitter: SplitterState = SplitterState(paneCount = 2, stored = doubleArrayOf(0.5)) {},
     ) {
         setContent {
             Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
-                MonitorContent(cluster, qsos)
+                Box(Modifier.size(600.dp, 400.dp)) {
+                    MonitorContent(cluster, qsos, splitter)
+                }
             }
         }
         waitForIdle()
@@ -75,6 +85,22 @@ class MonitorWindowScreenTest {
         onNodeWithText("Call TX").assertExists()
     }
 
+    /**
+     * The two tables used to get half the height each, fixed, and the stored position the
+     * JavaFX SplitPane had written was read by nobody (#144). The QSO heading is the top of
+     * the lower pane, so where it sits says where the divider is.
+     */
+    @Test
+    fun theStoredDividerPositionSplitsTheWindow() = runComposeUiTest {
+        show(clusterTable(), qsoTable(), SplitterState(paneCount = 2, stored = doubleArrayOf(0.8)) {})
+
+        val window = onRoot().getBoundsInRoot()
+        val qsoHeadingTop = onNodeWithText("QSO of the other").getBoundsInRoot().top
+        val share = (qsoHeadingTop - window.top) / (window.bottom - window.top)
+
+        assertTrue(share in 0.75f..0.85f, "QSO pane starts at $share of the height, expected about 0.8")
+    }
+
     @Test
     fun messagesArrivingWhileTheWindowIsOpenReachBothTables() = runComposeUiTest {
         val cluster = clusterTable()

app-desktop/src/test/kotlin/kst4contest/view/compose/NewJoinedBarScreenTest.kt

@@ -0,0 +1,126 @@
+package kst4contest.view.compose
+
+import androidx.compose.ui.test.ExperimentalTestApi
+import androidx.compose.ui.test.assertIsDisplayed
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.onNodeWithTag
+import androidx.compose.ui.test.performClick
+import androidx.compose.ui.test.runComposeUiTest
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.width
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import kst4contest.model.ChatCategory
+import kst4contest.model.ChatMember
+import kst4contest.model.RecentChatJoin
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertSame
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+
+@OptIn(ExperimentalTestApi::class)
+class NewJoinedBarScreenTest {
+
+    @Test
+    fun fiveNewestStationsAreDirectAndAdditionalStationsUseTheMoreDropdown() = runComposeUiTest {
+        val selection = StationSelectionState()
+        val members = (1..7).map { member("DL${it}ABC") }
+        val newJoined = NewJoinedState(clock = { 10_000L }) { member ->
+            selection.select(member, StationSelectionSource.NEW_JOINED)
+        }.apply {
+            updateActiveMembers(members)
+            updateEvents(
+                members.mapIndexed { index, member ->
+                    RecentChatJoin(member.callSign, 2, 9_000L + index)
+                },
+            )
+        }
+        val priority = TopPriorityState(topStations = { emptyList() }, onSelect = {})
+
+        setContent {
+            Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
+                TopPriorityBar(
+                    state = priority,
+                    newJoined = newJoined,
+                    onShowMore = {},
+                )
+            }
+        }
+
+        onNodeWithText("New joined:").assertIsDisplayed()
+        listOf("DL7ABC", "DL6ABC", "DL5ABC", "DL4ABC", "DL3ABC").forEach {
+            onNodeWithText(it).assertIsDisplayed()
+        }
+        onNodeWithText("DL2ABC").assertDoesNotExist()
+
+        onNodeWithTag(NEW_JOINED_MORE_TAG).performClick()
+        onNodeWithText("DL2ABC").assertIsDisplayed().performClick()
+
+        assertSame(members[1], selection.selected)
+        assertEquals(StationSelectionSource.NEW_JOINED, selection.lastSource)
+        assertTrue(selection.scrollRequestRevision > 0L)
+    }
+
+    @Test
+    fun emptyNewJoinedStateUsesNoSpaceBesidePriority() = runComposeUiTest {
+        val newJoined = NewJoinedState(onSelect = {})
+        val priorityMember = member("OK1FPR")
+        val priority = TopPriorityState(
+            topStations = { listOf(priorityMember to 767.0) },
+            onSelect = {},
+        ).apply { refresh() }
+
+        setContent {
+            Kst4ContestTheme(darkMode = true, baseFontSizeSp = 12f) {
+                TopPriorityBar(
+                    state = priority,
+                    newJoined = newJoined,
+                    onShowMore = {},
+                )
+            }
+        }
+
+        onNodeWithText("New joined:").assertDoesNotExist()
+        onNodeWithText("Priority:").assertIsDisplayed()
+        onNodeWithText("1 OK1FPR 767").assertIsDisplayed()
+    }
+
+    @Test
+    fun narrowBarMovesAdditionalDirectEntriesIntoTheSameDropdownWithoutOverflow() = runComposeUiTest {
+        val members = (1..7).map { member("DL${it}ABC") }
+        val newJoined = NewJoinedState(clock = { 10_000L }, onSelect = {}).apply {
+            updateActiveMembers(members)
+            updateEvents(members.mapIndexed { index, member ->
+                RecentChatJoin(member.callSign, 2, 9_000L + index)
+            })
+        }
+
+        setContent {
+            Kst4ContestTheme(darkMode = true, baseFontSizeSp = 12f) {
+                Box(Modifier.width(300.dp)) {
+                    TopPriorityBar(
+                        state = TopPriorityState(topStations = { emptyList() }, onSelect = {}),
+                        newJoined = newJoined,
+                        onShowMore = {},
+                    )
+                }
+            }
+        }
+
+        onNodeWithText("DL7ABC").assertIsDisplayed()
+        onNodeWithText("DL6ABC").assertDoesNotExist()
+        val limit = with(density) { 300.dp.toPx() }
+        listOf(NEW_JOINED_GROUP_TAG, PRIORITY_GROUP_TAG).forEach { tag ->
+            val bounds = onNodeWithTag(tag).assertIsDisplayed().fetchSemanticsNode().boundsInRoot
+            assertTrue(bounds.right <= limit + 0.5f, "$tag crosses the narrow bar")
+        }
+
+        onNodeWithTag(NEW_JOINED_MORE_TAG).performClick()
+        onNodeWithText("DL6ABC").assertIsDisplayed()
+    }
+
+    private fun member(callSign: String) = ChatMember().apply {
+        this.callSign = callSign
+        chatCategory = ChatCategory(2)
+    }
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/NewJoinedStateTest.kt

@@ -0,0 +1,115 @@
+package kst4contest.view.compose
+
+import kst4contest.model.ChatCategory
+import kst4contest.model.ChatMember
+import kst4contest.model.RecentChatJoin
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertSame
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+import java.util.concurrent.atomic.AtomicLong
+
+class NewJoinedStateTest {
+
+    private val now = AtomicLong(1_000_000L)
+    private var selected: ChatMember? = null
+    private val state = NewJoinedState(clock = now::get, onSelect = { selected = it })
+
+    @Test
+    fun `an initial active roster without live events produces no entries`() {
+        state.updateActiveMembers(listOf(member("HB9SJV", 2)))
+
+        assertTrue(state.entries.isEmpty())
+    }
+
+    @Test
+    fun `a live join is shown once and duplicate events do not renew it`() {
+        val station = member("HB9SJV", 2)
+        state.updateActiveMembers(listOf(station))
+        state.updateEvents(
+            listOf(
+                event("HB9SJV", 2, now.get() - 2_000L),
+                event("HB9SJV", 2, now.get() - 1_000L),
+            ),
+        )
+
+        assertEquals(listOf("HB9SJV"), state.entries.map { it.label })
+        assertEquals(now.get() - 2_000L, state.entries.single().joinedAtEpochMillis)
+    }
+
+    @Test
+    fun `the same full callsign in two categories stays distinguishable`() {
+        val main = member("DL1KDA", 2)
+        val microwave = member("DL1KDA", 3)
+        state.updateActiveMembers(listOf(main, microwave))
+        state.updateEvents(
+            listOf(
+                event("DL1KDA", 3, now.get()),
+                event("DL1KDA", 2, now.get() - 1L),
+            ),
+        )
+
+        assertEquals(listOf(3, 2), state.entries.map { it.identity.categoryNumber })
+        state.entries.first().select()
+        assertSame(microwave, selected)
+    }
+
+    @Test
+    fun `an entry expires exactly ten minutes after the join`() {
+        val station = member("OE5SOS", 2)
+        state.updateActiveMembers(listOf(station))
+        state.updateEvents(listOf(event("OE5SOS", 2, now.get())))
+
+        now.addAndGet(NewJoinedState.VALIDITY_MILLIS - 1L)
+        state.refresh()
+        assertTrue(state.isRecent(station))
+
+        now.incrementAndGet()
+        state.refresh()
+        assertFalse(state.isRecent(station))
+        assertTrue(state.entries.isEmpty())
+    }
+
+    @Test
+    fun `only five newest entries are direct and the rest remain in the overflow`() {
+        val members = (1..7).map { member("DL${it}ABC", 2) }
+        state.updateActiveMembers(members)
+        state.updateEvents(
+            members.mapIndexed { index, member ->
+                event(member.callSign, 2, now.get() - (members.size - index))
+            },
+        )
+
+        assertEquals(listOf("DL7ABC", "DL6ABC", "DL5ABC", "DL4ABC", "DL3ABC"),
+            state.visibleEntries.map { it.label })
+        assertEquals(listOf("DL2ABC", "DL1ABC"), state.overflowEntries.map { it.label })
+    }
+
+    @Test
+    fun `a station leaving disappears and a real rejoin gets the new event`() {
+        val first = member("PA2M", 2)
+        state.updateActiveMembers(listOf(first))
+        state.updateEvents(listOf(event("PA2M", 2, now.get())))
+
+        state.updateActiveMembers(emptyList())
+        assertTrue(state.entries.isEmpty())
+
+        val rejoined = member("PA2M", 2)
+        now.addAndGet(5_000L)
+        state.updateActiveMembers(listOf(rejoined))
+        state.updateEvents(listOf(event("PA2M", 2, now.get())))
+
+        state.entries.single().select()
+        assertSame(rejoined, selected)
+        assertEquals(now.get(), state.entries.single().joinedAtEpochMillis)
+    }
+
+    private fun member(callSign: String, categoryNumber: Int) = ChatMember().apply {
+        this.callSign = callSign
+        chatCategory = ChatCategory(categoryNumber)
+    }
+
+    private fun event(callSign: String, categoryNumber: Int, joinedAt: Long) =
+        RecentChatJoin(callSign, categoryNumber, joinedAt)
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/OnEventThread.kt

@@ -0,0 +1,37 @@
+package kst4contest.view.compose
+
+import java.awt.EventQueue
+import java.lang.reflect.InvocationTargetException
+
+/*
+ * An ImageComposeScene must live on the AWT event thread, the thread the application renders
+ * on. Compose Multiplatform 1.8.2 sends the global snapshot notifications there
+ * (GlobalSnapshotManager), and doing so takes two locks in the opposite order from a render
+ * on any other thread:
+ *
+ *  - the render holds the scene's FlushCoroutineDispatcher runLock while a task it runs
+ *    (here LazyListState.scrollToItem) measures and wants the SnapshotStateObserver's
+ *    observedScopeMapsLock;
+ *  - the event thread holds observedScopeMapsLock in drainChanges while a derived state it
+ *    re-reads wakes a snapshotFlow collector of that scene, whose dispatch wants runLock.
+ *
+ * Both waited forever in CI runs 40252077018, 40252089738 and 40299943329; the thread dump of
+ * the last one shows both stacks. On one thread the two monitors are simply re-entered, which
+ * is why the application never hangs this way.
+ */
+
+/**
+ * Runs [block] on the AWT event thread, waits for it and returns its result. Whatever
+ * [block] throws is rethrown here unwrapped, so a failed assertion still reads as one.
+ */
+internal fun <T> onEventThread(block: () -> T): T {
+    if (EventQueue.isDispatchThread()) return block()
+
+    var result: Result<T>? = null
+    try {
+        EventQueue.invokeAndWait { result = runCatching(block) }
+    } catch (wrapped: InvocationTargetException) {
+        throw wrapped.cause ?: wrapped
+    }
+    return result!!.getOrThrow()
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/PaletteStoreFactoryTest.kt

@@ -100,11 +100,11 @@ class PaletteStoreFactoryTest(@TempDir private val tempDir: Path) {
         val files = OperatorProfilePaletteFiles.of(other)
 
         assertTrue(
-            files.dayFile.path.endsWith("profiles/OP2/KST4ContestDefaultDay.css"),
+            files.dayFile.toPath().endsWith(Path.of("profiles", "OP2", "KST4ContestDefaultDay.css")),
             "the daylight file is ${files.dayFile.path}",
         )
         assertTrue(
-            files.eveningFile.path.endsWith("profiles/OP2/KST4ContestDefaultEvening.css"),
+            files.eveningFile.toPath().endsWith(Path.of("profiles", "OP2", "KST4ContestDefaultEvening.css")),
             "the evening file is ${files.eveningFile.path}",
         )
     }

app-desktop/src/test/kotlin/kst4contest/view/compose/ReachabilityStateTest.kt

@@ -0,0 +1,63 @@
+package kst4contest.view.compose
+
+import kst4contest.model.Band
+import kst4contest.model.ChatMember
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertNull
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+import java.util.EnumSet
+
+class ReachabilityStateTest {
+
+    @Test
+    fun `auto and only locally active bands are offered`() {
+        val state = ReachabilityState(EnumSet.of(Band.B_144, Band.B_1296))
+
+        assertEquals(listOf(null, Band.B_144, Band.B_1296), state.options.map { it.band })
+        assertNull(state.bandOverride)
+        assertEquals("Auto", state.selectedOption.label)
+    }
+
+    @Test
+    fun `band changes redraw but never calculate`() {
+        val station = ChatMember().apply { callSign = "DL1ABC" }
+        val calculated = mutableListOf<Pair<ChatMember, Band>>()
+        var redraws = 0
+        val state = ReachabilityState(
+            activeBands = EnumSet.of(Band.B_144, Band.B_432),
+            resolveAutoBand = { Band.B_144 },
+            selectedStation = { station },
+            calculate = { member, band -> calculated += member to band },
+            refresh = { redraws++ },
+        )
+
+        state.selectBand(Band.B_432)
+
+        assertEquals(Band.B_432, state.resolveBand(station))
+        assertEquals(1, redraws)
+        assertTrue(calculated.isEmpty())
+
+        assertTrue(state.calculateSelected())
+        assertEquals(listOf(station to Band.B_432), calculated)
+    }
+
+    @Test
+    fun `auto uses shared resolver and unavailable selections do not calculate`() {
+        var selected: ChatMember? = ChatMember()
+        var calculations = 0
+        val state = ReachabilityState(
+            activeBands = EnumSet.of(Band.B_144),
+            resolveAutoBand = { null },
+            selectedStation = { selected },
+            calculate = { _, _ -> calculations++ },
+        )
+
+        assertFalse(state.canCalculate)
+        assertFalse(state.calculateSelected())
+        selected = null
+        assertFalse(state.calculateSelected())
+        assertEquals(0, calculations)
+    }
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/SelectedStationMessagePredicateTest.kt

@@ -0,0 +1,155 @@
+package kst4contest.view.compose
+
+import kst4contest.model.ChatCategory
+import kst4contest.model.ChatMember
+import kst4contest.model.ChatMessage
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+
+class SelectedStationMessagePredicateTest {
+
+    private val ownCall = "DL0OWN"
+    private val selected = member("DL1SEL", 2)
+
+    @Test
+    fun `pm to me contains both private directions with the selected station`() {
+        val predicate = SelectedStationMessagePredicate.forSelection(
+            SelectedMessageFilter.PM_TO_ME,
+            selected,
+            ownCall,
+        )
+
+        assertTrue(predicate.test(message(selected, member(ownCall, 2), 2)))
+        assertTrue(predicate.test(message(member(ownCall, 2), selected, 2)))
+        assertFalse(predicate.test(message(selected, member("DL2OTHER", 2), 2)))
+        assertFalse(predicate.test(publicMessage(selected, 2)))
+    }
+
+    @Test
+    fun `pm to me also contains an explicitly addressed public message`() {
+        val predicate = SelectedStationMessagePredicate.forSelection(
+            SelectedMessageFilter.PM_TO_ME,
+            selected,
+            ownCall,
+        )
+
+        assertTrue(predicate.test(publicMessage(selected, 2, addressedToMe = true)))
+        assertFalse(predicate.test(publicMessage(selected, 2, addressedToMe = false)))
+
+        val mentionOnly = publicMessage(selected, 2).apply {
+            messageText = "Please ask $ownCall whether the path is open"
+        }
+        assertFalse(predicate.test(mentionOnly))
+    }
+
+    @Test
+    fun `pm to other contains only private messages sent by the selected station to others`() {
+        val other = member("DL2OTHER", 2)
+        val predicate = SelectedStationMessagePredicate.forSelection(
+            SelectedMessageFilter.PM_TO_OTHER,
+            selected,
+            ownCall,
+        )
+
+        assertTrue(predicate.test(message(selected, other, 2)))
+        assertFalse(predicate.test(message(other, selected, 2)))
+        assertFalse(predicate.test(message(selected, member(ownCall, 2), 2)))
+        assertFalse(predicate.test(publicMessage(selected, 2)))
+    }
+
+    @Test
+    fun `public contains only public messages sent by the selected station`() {
+        val predicate = SelectedStationMessagePredicate.forSelection(
+            SelectedMessageFilter.PUBLIC,
+            selected,
+            ownCall,
+        )
+
+        assertTrue(predicate.test(publicMessage(selected, 2)))
+        assertTrue(predicate.test(publicMessage(selected, 2, addressedToMe = true)))
+        assertFalse(predicate.test(publicMessage(member("DL2OTHER", 2), 2)))
+        assertFalse(predicate.test(message(selected, member("DL2OTHER", 2), 2)))
+    }
+
+    @Test
+    fun `nothing applies no additional message type restriction`() {
+        val predicate = SelectedStationMessagePredicate.forSelection(
+            SelectedMessageFilter.NOTHING,
+            selected,
+            ownCall,
+        )
+
+        assertTrue(predicate.test(message(selected, member(ownCall, 2), 2)))
+        assertTrue(predicate.test(message(member(ownCall, 2), selected, 2)))
+        assertTrue(predicate.test(publicMessage(selected, 2)))
+        assertFalse(predicate.test(publicMessage(member("DL2OTHER", 2), 2)))
+    }
+
+    @Test
+    fun `the same callsign in another category does not match`() {
+        val predicate = SelectedStationMessagePredicate.forSelection(
+            SelectedMessageFilter.PUBLIC,
+            selected,
+            ownCall,
+        )
+
+        assertFalse(predicate.test(publicMessage(member("DL1SEL", 3), 3)))
+    }
+
+    @Test
+    fun `message category is authoritative when a member snapshot has no category`() {
+        val senderWithoutCategory = member("DL1SEL", 2).apply { chatCategory = null }
+        val predicate = SelectedStationMessagePredicate.forSelection(
+            SelectedMessageFilter.PM_TO_ME,
+            selected,
+            ownCall,
+        )
+
+        assertTrue(predicate.test(message(senderWithoutCategory, member(ownCall, 2), 2)))
+    }
+
+    @Test
+    fun `missing selection or incomplete historical data fails closed`() {
+        val withoutSelection = SelectedStationMessagePredicate.forSelection(
+            SelectedMessageFilter.PUBLIC,
+            null,
+            ownCall,
+        )
+        val incomplete = ChatMessage().apply { chatCategory = ChatCategory(2) }
+
+        assertFalse(withoutSelection.test(publicMessage(selected, 2)))
+        assertFalse(
+            SelectedStationMessagePredicate.forSelection(SelectedMessageFilter.PUBLIC, selected, ownCall)
+                .test(incomplete),
+        )
+        assertFalse(
+            SelectedStationMessagePredicate.forSelection(
+                SelectedMessageFilter.PUBLIC,
+                ChatMember().apply { callSign = "DL1SEL" },
+                ownCall,
+            ).test(publicMessage(selected, 2)),
+        )
+    }
+
+    private fun message(sender: ChatMember, receiver: ChatMember, category: Int): ChatMessage = ChatMessage().apply {
+        this.sender = sender
+        this.receiver = receiver
+        chatCategory = ChatCategory(category)
+        messageText = "test"
+    }
+
+    private fun publicMessage(
+        sender: ChatMember,
+        category: Int,
+        addressedToMe: Boolean = false,
+    ): ChatMessage = message(sender, member("ALL", category), category).apply {
+        isMessageDirectedToCommunity = true
+        isMessageDirectedToMe = addressedToMe
+    }
+
+    private fun member(callSign: String, category: Int): ChatMember = ChatMember().apply {
+        this.callSign = callSign
+        chatCategory = ChatCategory(category)
+    }
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/SelectedStationMessageUiVisualRenderingTest.kt

@@ -0,0 +1,160 @@
+package kst4contest.view.compose
+
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.ui.ImageComposeScene
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.Density
+import androidx.compose.ui.unit.dp
+import kst4contest.model.Band
+import kst4contest.model.ChatCategory
+import kst4contest.model.ChatMember
+import kst4contest.model.ChatMessage
+import kst4contest.model.ClusterMessage
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+import java.nio.file.Files
+import java.nio.file.Path
+import java.time.Instant
+import java.util.EnumSet
+import java.util.function.Consumer
+
+/** Produces review images for the selected-station controls and lower message tabs. */
+class SelectedStationMessageUiVisualRenderingTest {
+
+    @Test
+    fun rendersDayAndEveningAt100And125Percent() {
+        val reportDirectory = Path.of("build", "reports", "selected-station-message-ui")
+        Files.createDirectories(reportDirectory)
+
+        val scenarios = listOf(
+            RenderScenario(prefix = "", panelWidth = 570.dp, windowHeight = 768),
+            RenderScenario(prefix = "narrow-", panelWidth = 360.dp, windowHeight = 768),
+            RenderScenario(prefix = "short-", panelWidth = 570.dp, windowHeight = 480),
+        )
+        scenarios.forEach { scenario ->
+            listOf(false, true).forEach { darkMode ->
+                listOf(1f, 1.25f).forEach { scale ->
+                    val bytes = render(darkMode, scale, scenario.panelWidth, scenario.windowHeight)
+                    val palette = if (darkMode) "evening" else "day"
+                    val scaling = if (scale == 1f) "100" else "125"
+                    val name = "${scenario.prefix}$palette-$scaling.png"
+                    Files.write(reportDirectory.resolve(name), bytes)
+                    assertTrue(bytes.size > 10_000, "$name did not render")
+                }
+            }
+        }
+    }
+
+    private fun render(darkMode: Boolean, scale: Float, panelWidth: Dp, windowHeight: Int): ByteArray {
+        val selectedMember = member("DM5M", 2).apply {
+            setQTFdirection(255.54)
+            qrb = 1907.59
+            activityTimeLastInEpoch = Instant.now().epochSecond - 240
+            isQrv144 = false
+            isQrv1240 = false
+        }
+        val selectedState = SelectedStationState(
+            propagateNotQrv = {},
+            createSked = { _, _, _, _ -> true },
+            detectBands = { "Bands: 144/432 MHz" },
+        ).apply {
+            select(selectedMember)
+            skedBand = Band.B_144
+            skedMode = "SSB"
+            remindPm = true
+        }
+        val selectedMessages = messageTable().apply {
+            replaceRows(
+                listOf(
+                    message(selectedMember, member("DL0OWN", 2), "pse ur qrg"),
+                    message(selectedMember, member("ALL", 2), "(DL0OWN) qrv 144.300"),
+                ),
+            )
+        }
+        val publicMessages = messageTable().apply {
+            replaceRows(listOf(message(selectedMember, member("ALL", 2), "cq 144.300")))
+        }
+        val qsoMessages = messageTable().apply {
+            replaceRows(listOf(message(member("DL1ABC", 2), member("DL2XYZ", 2), "pse sked")))
+        }
+
+        return onEventThread {
+            val scene = ImageComposeScene(width = 1366, height = windowHeight, density = Density(scale)) {
+                Kst4ContestTheme(darkMode = darkMode, baseFontSizeSp = 12f) {
+                    Surface(
+                        modifier = Modifier.fillMaxSize(),
+                        color = MaterialTheme.colorScheme.background,
+                    ) {
+                        Row(Modifier.fillMaxSize().padding(6.dp)) {
+                            MessageTabs(
+                                publicMessages = publicMessages,
+                                clusterMessages = clusterTable(),
+                                qsoOfTheOther = qsoMessages,
+                                modifier = Modifier.weight(1f),
+                            )
+                            SelectedStationPanel(
+                                state = selectedState,
+                                messages = selectedMessages,
+                                activeBands = EnumSet.of(Band.B_144, Band.B_432, Band.B_1296),
+                                openInBrowser = Consumer {},
+                                onShowOnMap = {},
+                                onShowPathInAirScout = {},
+                                modifier = Modifier.width(panelWidth).padding(start = 6.dp),
+                            )
+                        }
+                    }
+                }
+            }
+
+            try {
+                scene.render().encodeToData()!!.bytes
+            } finally {
+                scene.close()
+            }
+        }
+    }
+
+    private fun messageTable() = DataTableState(
+        columns = listOf(
+            DataColumn("sender", "Sender", value = { message: ChatMessage -> message.sender.callSign }),
+            DataColumn("message", "Message", value = { message: ChatMessage -> message.messageText.orEmpty() }),
+        ),
+        rowKey = RowKeys.byReference<ChatMessage>(),
+    )
+
+    private fun clusterTable() = DataTableState(
+        columns = listOf(
+            DataColumn(
+                "message",
+                "DXCluster",
+                value = { message: ClusterMessage -> message.messageInhibited.orEmpty() },
+            ),
+        ),
+        rowKey = RowKeys.byReference<ClusterMessage>(),
+    )
+
+    private fun message(sender: ChatMember, receiver: ChatMember, text: String) = ChatMessage().apply {
+        this.sender = sender
+        this.receiver = receiver
+        chatCategory = sender.chatCategory
+        messageText = text
+    }
+
+    private fun member(callSign: String, category: Int) = ChatMember().apply {
+        this.callSign = callSign
+        chatCategory = ChatCategory(category)
+        qra = "JO31AA"
+    }
+
+    private data class RenderScenario(
+        val prefix: String,
+        val panelWidth: Dp,
+        val windowHeight: Int,
+    )
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/SelectedStationPanelScreenTest.kt

@@ -0,0 +1,431 @@
+package kst4contest.view.compose
+
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.width
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.test.ExperimentalTestApi
+import androidx.compose.ui.test.assertIsOff
+import androidx.compose.ui.test.assertIsOn
+import androidx.compose.ui.test.assertIsDisplayed
+import androidx.compose.ui.test.onNodeWithTag
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.performClick
+import androidx.compose.ui.test.performScrollTo
+import androidx.compose.ui.test.runComposeUiTest
+import androidx.compose.ui.unit.dp
+import kst4contest.model.Band
+import kst4contest.model.ChatCategory
+import kst4contest.model.ChatMember
+import kst4contest.model.ChatMessage
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+import java.time.Instant
+import java.util.EnumSet
+import java.util.function.Consumer
+import kotlin.math.abs
+
+/** The selected-station controls remain reachable when its splitter pane is short. */
+@OptIn(ExperimentalTestApi::class)
+class SelectedStationPanelScreenTest {
+
+    @Test
+    fun stationHeaderKeepsAllMetadataOnOneLineWhenWideAndOmitsTheLocator() = runComposeUiTest {
+        val station = member("CT1EKD").apply {
+            qra = "IM59IB"
+            chatCategory = ChatCategory(2)
+            setQTFdirection(255.54)
+            qrb = 1907.59
+            activityTimeLastInEpoch = Instant.now().epochSecond - 240
+        }
+        val selected = selectedState(station, detectedBands = "Bands: 144/432 MHz")
+
+        setPanel(selected, Modifier.width(900.dp).height(420.dp))
+
+        val callsignTop = onNodeWithText("CT1EKD").fetchSemanticsNode().boundsInRoot.top
+        listOf(
+            station.chatCategory.getChatCategoryName(station.chatCategory.categoryNumber),
+            "QTF: 255.54°",
+            "QRB: 1907.59 km",
+            "Bands: 144/432 MHz",
+        ).forEach { text ->
+            val top = onNodeWithText(text).assertIsDisplayed().fetchSemanticsNode().boundsInRoot.top
+            assertTrue(abs(top - callsignTop) <= 4f, "$text did not remain in the wide title row")
+        }
+        onNodeWithText("Last activity:", substring = true).assertIsDisplayed()
+        onNodeWithText("Bands: Bands:", substring = true).assertDoesNotExist()
+        onNodeWithText("IM59IB").assertDoesNotExist()
+    }
+
+    @Test
+    fun stationHeaderWrapsMetadataWithoutClippingWhenNarrow() = runComposeUiTest {
+        val station = member("CT1EKD").apply {
+            qra = "IM59IB"
+            chatCategory = ChatCategory(2)
+            setQTFdirection(255.54)
+            qrb = 1907.59
+            activityTimeLastInEpoch = Instant.now().epochSecond - 240
+        }
+        val selected = selectedState(station, detectedBands = "Bands: 144/432 MHz")
+
+        setPanel(selected, Modifier.width(310.dp).height(620.dp))
+
+        val callsign = onNodeWithText("CT1EKD").fetchSemanticsNode().boundsInRoot
+        val bands = onNodeWithText("Bands: 144/432 MHz").assertIsDisplayed()
+            .fetchSemanticsNode().boundsInRoot
+        val panel = onNodeWithTag(SELECTED_STATION_PANEL_TAG).fetchSemanticsNode().boundsInRoot
+        assertTrue(bands.top > callsign.top, "the narrow header did not wrap")
+        assertTrue(bands.right <= panel.right, "wrapped metadata crossed the panel edge")
+        onNodeWithText("IM59IB").assertDoesNotExist()
+    }
+
+    @Test
+    fun stationHeaderKeepsTheAlreadyLabelledEmptyBandsValueExactlyOnce() = runComposeUiTest {
+        val selected = selectedState(member("DM5M"), detectedBands = "Bands: -")
+
+        setPanel(selected, Modifier.width(570.dp).height(420.dp))
+
+        onNodeWithText("Bands: -").assertIsDisplayed()
+        onNodeWithText("Bands: Bands:", substring = true).assertDoesNotExist()
+    }
+
+    @Test
+    fun messageFilterLabelSharesTheFirstFlowItemWithPmToMe() = runComposeUiTest {
+        val selected = selectedState("DM5M")
+
+        setPanel(selected, Modifier.width(250.dp).height(520.dp))
+
+        val label = onNodeWithText("Show messages:").assertIsDisplayed()
+            .fetchSemanticsNode().boundsInRoot
+        val firstChoice = onNodeWithText("pm to me").assertIsDisplayed()
+            .fetchSemanticsNode().boundsInRoot
+        assertTrue(abs(label.center.y - firstChoice.center.y) <= 2f)
+    }
+
+    @Test
+    fun allMessageChoicesShareOneVerticalAxis() = runComposeUiTest {
+        setPanel(selectedState("DM5M"), Modifier.width(570.dp).height(420.dp))
+
+        val centers = listOf("pm to me", "pm to other", "public msgs", "nothing")
+            .map { onNodeWithText(it).fetchSemanticsNode().boundsInRoot.center.y }
+
+        assertTrue(centers.max() - centers.min() <= 1f, "radio labels are misaligned: $centers")
+    }
+
+    @Test
+    fun selectedMessageSplitterChangesTheActualTableHeightInBothDirections() = runComposeUiTest {
+        val selected = selectedState("DM5M")
+        val splitter = SplitterState(2, doubleArrayOf(0.45)) {}
+
+        setContent {
+            Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
+                SelectedStationPanel(
+                    state = selected,
+                    messages = messageTable(),
+                    activeBands = EnumSet.of(Band.B_144),
+                    contentSplitter = splitter,
+                    openInBrowser = Consumer {},
+                    onShowOnMap = {},
+                    onShowPathInAirScout = {},
+                    modifier = Modifier.width(570.dp).height(620.dp),
+                )
+            }
+        }
+
+        val initial = onNodeWithTag(SELECTED_MESSAGES_TABLE_TAG)
+            .fetchSemanticsNode().boundsInRoot.height
+        runOnIdle { splitter.drag(0, 0.70f, 500f) }
+        waitForIdle()
+        val taller = onNodeWithTag(SELECTED_MESSAGES_TABLE_TAG)
+            .fetchSemanticsNode().boundsInRoot.height
+        assertTrue(taller > initial, "moving the divider down did not enlarge the table")
+
+        runOnIdle { splitter.drag(0, 0.25f, 500f) }
+        waitForIdle()
+        val shorter = onNodeWithTag(SELECTED_MESSAGES_TABLE_TAG)
+            .fetchSemanticsNode().boundsInRoot.height
+        assertTrue(shorter < taller, "moving the divider up did not shrink the table")
+
+        onNodeWithText("Lookup on qrz.com").assertIsDisplayed()
+    }
+
+    @Test
+    fun selectedMessageSplitterSurvivesStationAndMessageUpdates() = runComposeUiTest {
+        val selected = selectedState("DM5M")
+        val messages = messageTable()
+        val splitter = SplitterState(2, doubleArrayOf(0.62)) {}
+
+        setContent {
+            Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
+                SelectedStationPanel(
+                    state = selected,
+                    messages = messages,
+                    activeBands = EnumSet.of(Band.B_144),
+                    contentSplitter = splitter,
+                    openInBrowser = Consumer {},
+                    onShowOnMap = {},
+                    onShowPathInAirScout = {},
+                    modifier = Modifier.width(570.dp).height(620.dp),
+                )
+            }
+        }
+
+        val expectedPosition = splitter.positions.single()
+        runOnIdle {
+            selected.select(member("DL1ABC"))
+            messages.replaceRows(listOf(ChatMessage().apply { messageText = "new message" }))
+        }
+        waitForIdle()
+
+        assertEquals(expectedPosition, splitter.positions.single())
+    }
+
+    @Test
+    fun notQrvHeadingFollowsTheCurrentStationWithoutKeepingAStaleCallsign() = runComposeUiTest {
+        val selected = selectedState("DM5M")
+
+        setContent {
+            Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
+                SelectedStationPanel(
+                    state = selected,
+                    messages = messageTable(),
+                    activeBands = EnumSet.of(Band.B_144),
+                    openInBrowser = Consumer {},
+                    onShowOnMap = {},
+                    onShowPathInAirScout = {},
+                    modifier = Modifier.height(420.dp),
+                )
+            }
+        }
+
+        onNodeWithText("Tag DM5M not QRV at bands:").assertIsDisplayed()
+
+        runOnIdle { selected.select(member("DL1ABC")) }
+        waitForIdle()
+        onNodeWithText("Tag DM5M not QRV at bands:").assertDoesNotExist()
+        onNodeWithText("Tag DL1ABC not QRV at bands:").assertIsDisplayed()
+
+        runOnIdle { selected.select(null) }
+        waitForIdle()
+        onNodeWithText("Tag DL1ABC not QRV at bands:").assertDoesNotExist()
+    }
+
+    @Test
+    fun skedSentenceUsesTheCompactControlsWithoutTheOldOffsetsLabel() = runComposeUiTest {
+        val selected = selectedState("DM5M")
+
+        setContent {
+            Kst4ContestTheme(darkMode = true, baseFontSizeSp = 12f) {
+                SelectedStationPanel(
+                    state = selected,
+                    messages = messageTable(),
+                    activeBands = EnumSet.of(Band.B_144),
+                    openInBrowser = Consumer {},
+                    onShowOnMap = {},
+                    onShowPathInAirScout = {},
+                    modifier = Modifier.height(420.dp),
+                )
+            }
+        }
+
+        onNodeWithText("Sked alert").assertIsDisplayed()
+        onNodeWithText("Sked in").assertIsDisplayed()
+        onNodeWithText("Remind pm in").assertIsDisplayed()
+        onNodeWithText("Reminder offsets").assertDoesNotExist()
+    }
+
+    @Test
+    fun skedBandChoiceUsesEnabledBandsAndPassesTheSelectionToSkedCreation() = runComposeUiTest {
+        var createdMinutes: Int? = null
+        var createdBand: Band? = null
+        var createdMode: String? = null
+        val selected = SelectedStationState(
+            propagateNotQrv = {},
+            createSked = { _, minutes, band, mode ->
+                createdMinutes = minutes
+                createdBand = band
+                createdMode = mode
+                true
+            },
+        ).apply {
+            select(member("DM5M"))
+            skedBand = Band.B_144
+            skedMode = "SSB"
+        }
+
+        setContent {
+            Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
+                SelectedStationPanel(
+                    state = selected,
+                    messages = messageTable(),
+                    activeBands = EnumSet.of(Band.B_144, Band.B_432),
+                    openInBrowser = Consumer {},
+                    onShowOnMap = {},
+                    onShowPathInAirScout = {},
+                    modifier = Modifier.width(570.dp).height(520.dp),
+                )
+            }
+        }
+
+        onNodeWithText("144 MHz").performClick()
+        onNodeWithText("1296 MHz").assertDoesNotExist()
+        onNodeWithText("432 MHz").assertIsDisplayed().performClick()
+        assertEquals(Band.B_432, selected.skedBand)
+
+        onNodeWithText("5").performClick()
+        onNodeWithText("8").assertIsDisplayed().performClick()
+        onNodeWithText("SSB").performClick()
+        onNodeWithText("CW").assertIsDisplayed().performClick()
+
+        onNodeWithText("Create sked").performScrollTo().performClick()
+        assertEquals(8, createdMinutes)
+        assertEquals(Band.B_432, createdBand)
+        assertEquals("CW", createdMode)
+    }
+
+    @Test
+    fun notQrvToggleButtonsKeepAllSemanticsAndFollowTheSelectedStation() = runComposeUiTest {
+        val first = member("DM5M").apply {
+            isQrv144 = false
+            isQrv432 = true
+            isQrv1240 = false
+        }
+        val second = member("DL1ABC").apply {
+            isQrv144 = true
+            isQrv432 = false
+            isQrv1240 = true
+        }
+        val propagated = mutableListOf<ChatMember>()
+        val selected = SelectedStationState(
+            propagateNotQrv = { propagated += it },
+            createSked = { _, _, _, _ -> true },
+        ).apply { select(first) }
+
+        setPanel(
+            selected,
+            Modifier.width(570.dp).height(520.dp),
+            EnumSet.of(Band.B_144, Band.B_432, Band.B_1296),
+        )
+
+        onNodeWithText("144").assertIsOn()
+        onNodeWithText("432").assertIsOff()
+        onNodeWithText("23cm").assertIsOn()
+        onNodeWithText("all").assertIsOff().performClick().assertIsOn()
+        assertFalse(first.isQrv10G, "all must retain its existing all-supported-bands semantics")
+        assertTrue(propagated.last() === first)
+
+        onNodeWithText("all").performClick().assertIsOff()
+        assertTrue(first.isQrv144)
+        assertTrue(first.isQrv10G)
+
+        runOnIdle { selected.select(second) }
+        waitForIdle()
+        onNodeWithText("144").assertIsOff()
+        onNodeWithText("432").assertIsOn()
+        onNodeWithText("23cm").assertIsOff()
+    }
+
+    @Test
+    fun notQrvAndSkedGroupsFollowTheActualPanelWidth() = runComposeUiTest {
+        val selected = selectedState("DM5M")
+        var panelWidth by mutableStateOf(620.dp)
+
+        setContent {
+            Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
+                Panel(selected, Modifier.width(panelWidth).height(560.dp))
+            }
+        }
+
+        var notQrv = onNodeWithTag(SELECTED_NOT_QRV_GROUP_TAG).fetchSemanticsNode().boundsInRoot
+        var sked = onNodeWithTag(SELECTED_SKED_GROUP_TAG).fetchSemanticsNode().boundsInRoot
+        assertTrue(abs(notQrv.top - sked.top) <= 1f, "wide groups were not arranged horizontally")
+        assertTrue(sked.left >= notQrv.right, "wide groups overlap")
+
+        runOnIdle { panelWidth = 360.dp }
+        waitForIdle()
+
+        notQrv = onNodeWithTag(SELECTED_NOT_QRV_GROUP_TAG).fetchSemanticsNode().boundsInRoot
+        sked = onNodeWithTag(SELECTED_SKED_GROUP_TAG).fetchSemanticsNode().boundsInRoot
+        val panel = onNodeWithTag(SELECTED_STATION_PANEL_TAG).fetchSemanticsNode().boundsInRoot
+        assertTrue(sked.top >= notQrv.bottom, "narrow groups were not stacked vertically")
+        assertTrue(notQrv.right <= panel.right && sked.right <= panel.right, "a group crossed the panel edge")
+
+        listOf("Create sked", "Sked fail", "Reset fail").forEach {
+            onNodeWithText(it).performScrollTo().assertIsDisplayed()
+        }
+    }
+
+    @Test
+    fun lookupActionsCanBeScrolledIntoViewInAShortPane() = runComposeUiTest {
+        val selected = selectedState("DL1ABC")
+        val messages = messageTable()
+
+        setContent {
+            Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
+                SelectedStationPanel(
+                    state = selected,
+                    messages = messages,
+                    activeBands = EnumSet.of(Band.B_144),
+                    openInBrowser = Consumer {},
+                    onShowOnMap = {},
+                    onShowPathInAirScout = {},
+                    modifier = Modifier.height(220.dp),
+                )
+            }
+        }
+
+        onNodeWithText("Lookup on qrz.com").assertIsDisplayed()
+    }
+
+    private fun selectedState(callSign: String) = selectedState(member(callSign))
+
+    private fun selectedState(member: ChatMember, detectedBands: String = "") = SelectedStationState(
+        propagateNotQrv = {},
+        createSked = { _, _, _, _ -> true },
+        detectBands = { detectedBands },
+    ).apply { select(member) }
+
+    private fun member(callSign: String) = ChatMember().apply {
+        this.callSign = callSign
+        qra = "JO50AA"
+    }
+
+    private fun androidx.compose.ui.test.ComposeUiTest.setPanel(
+        selected: SelectedStationState,
+        modifier: Modifier,
+        activeBands: Set<Band> = EnumSet.of(Band.B_144),
+    ) {
+        setContent {
+            Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
+                Panel(selected, modifier, activeBands)
+            }
+        }
+    }
+
+    @androidx.compose.runtime.Composable
+    private fun Panel(
+        selected: SelectedStationState,
+        modifier: Modifier,
+        activeBands: Set<Band> = EnumSet.of(Band.B_144),
+    ) {
+        SelectedStationPanel(
+            state = selected,
+            messages = messageTable(),
+            activeBands = activeBands,
+            openInBrowser = Consumer {},
+            onShowOnMap = {},
+            onShowPathInAirScout = {},
+            modifier = modifier,
+        )
+    }
+
+    private fun messageTable() = DataTableState(
+            SelectedStationMessageColumns.all(),
+            RowKeys.byReference<ChatMessage>(),
+            "selected-station-panel-test",
+        )
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/SelectedStationStateTest.kt

@@ -1,11 +1,14 @@
 package kst4contest.view.compose
 
 import kst4contest.model.ChatMember
+import kst4contest.model.ChatPreferences
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.Assertions.assertEquals
 import org.junit.jupiter.api.Assertions.assertFalse
 import org.junit.jupiter.api.Assertions.assertNull
 import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.io.TempDir
+import java.nio.file.Path
 
 /**
  * The panel below the station list, for the station currently selected.
@@ -16,6 +19,9 @@ import org.junit.jupiter.api.Assertions.assertTrue
  */
 class SelectedStationStateTest {
 
+    @TempDir
+    lateinit var tempDir: Path
+
     private class Session {
         val propagated = mutableListOf<String>()
         var skedsCreated = 0
@@ -178,6 +184,15 @@ class SelectedStationStateTest {
             "the JavaFX radio buttons were one toggle group; two cannot be on")
     }
 
+    @Test
+    fun `public messages can be the configured initial radio mode`() {
+        val prefs = ChatPreferences(tempDir.resolve("preferences.xml")).apply {
+            isGuiOptions_defaultFilterPublicMsgs = true
+        }
+
+        assertEquals(SelectedMessageFilter.PUBLIC, SelectedMessageFilter.fromPreferences(prefs))
+    }
+
     /**
      * No filter is chosen until the operator chooses one. JavaFX has the
      * setSelected(true) on "pm to me" commented out, so the group starts with nothing on,

app-desktop/src/test/kotlin/kst4contest/view/compose/SettingsFieldCoverageTest.kt

@@ -35,7 +35,9 @@ class SettingsFieldCoverageTest {
             ""
         }
 
-        val missing = expected.filterNot { composeSources.contains("$it(") }
+        val missing = expected.filterNot {
+            composeSources.contains("$it(") || composeSources.contains("::$it")
+        }
 
         assertTrue(missing.isEmpty(),
             "settings not written by any Compose source (${missing.size} of ${expected.size}):\n" +

app-desktop/src/test/kotlin/kst4contest/view/compose/SkedEditorStateTest.kt

@@ -0,0 +1,82 @@
+package kst4contest.view.compose
+
+import kst4contest.model.Band
+import kst4contest.model.ChatCategory
+import kst4contest.model.ChatMember
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertSame
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+
+class SkedEditorStateTest {
+
+    @Test
+    fun `panel submission includes reminder settings in one request`() {
+        val requests = mutableListOf<SkedRequest>()
+        val member = member("DL1ABC", 2)
+        val state = SelectedStationState(
+            propagateNotQrv = { },
+            createSked = { _, _, _, _ -> false },
+        )
+        state.skedRequestSubmitter = { request -> requests += request; true }
+        state.select(member)
+        state.skedMinutes = 8
+        state.skedBand = Band.B_432
+        state.skedMode = "CW"
+        state.remindPm = true
+        state.reminderOffsets = "5+2+1"
+
+        assertTrue(state.createSked())
+        assertEquals(
+            SkedRequest(member, 8, Band.B_432, "CW", true, "5+2+1"),
+            requests.single(),
+        )
+    }
+
+    @Test
+    fun `popup draft keeps its target when the shared selection changes`() {
+        val requests = mutableListOf<SkedRequest>()
+        val original = member("DL1ABC", 2)
+        val later = member("DL2XYZ", 3)
+        val draft = SkedEditorState(
+            target = original,
+            minutes = 5,
+            band = Band.B_144,
+            mode = "SSB",
+            remindPm = false,
+            reminderOffsets = "2+1",
+            submitter = { request -> requests += request; true },
+        )
+
+        draft.minutes = 10
+        draft.band = Band.B_1296
+        draft.remindPm = true
+        @Suppress("UNUSED_VARIABLE") val unrelatedSelection = later
+
+        assertTrue(draft.submit())
+        assertSame(original, requests.single().target)
+        assertEquals(Band.B_1296, requests.single().band)
+        assertTrue(requests.single().remindPm)
+    }
+
+    @Test
+    fun `rejected popup submission reports failure so popup can remain open`() {
+        val draft = SkedEditorState(
+            target = member("DL1ABC", 2),
+            minutes = 5,
+            band = null,
+            mode = "SSB",
+            remindPm = false,
+            reminderOffsets = "2+1",
+            submitter = { false },
+        )
+
+        assertFalse(draft.submit())
+    }
+
+    private fun member(callSign: String, category: Int) = ChatMember().apply {
+        this.callSign = callSign
+        chatCategory = ChatCategory(category)
+    }
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/SplitterStateTest.kt

@@ -219,6 +219,57 @@ class SplitterStateTest {
         assertEquals(777f, state.paneSizes(totalPx = 777f).sum(), 0.01f)
     }
 
+    @Test
+    fun `pane-specific minimums keep fixed-height controls visible without replacing stored positions`() {
+        val stored = doubleArrayOf(0.62, 0.7, 0.75, 0.9)
+        val state = SplitterState(paneCount = 5, stored = stored) {}
+
+        val sizes = state.paneSizes(
+            totalPx = 800f,
+            minimumPaneSizesPx = floatArrayOf(24f, 26f, 104f, 26f, 24f),
+        )
+
+        assertTrue(sizes[0] >= 24f)
+        assertTrue(sizes[1] >= 26f)
+        assertTrue(sizes[2] >= 104f)
+        assertTrue(sizes[3] >= 26f)
+        assertTrue(sizes[4] >= 24f)
+        assertEquals(800f, sizes.sum(), 0.01f)
+        stored.forEachIndexed { index, position ->
+            assertEquals(position.toFloat(), state.positions[index], 0.001f)
+        }
+    }
+
+    @Test
+    fun `pane-specific minimums scale down together in an impossibly small splitter`() {
+        val state = SplitterState(paneCount = 3, stored = doubleArrayOf(0.2, 0.8)) {}
+
+        val sizes = state.paneSizes(
+            totalPx = 100f,
+            minimumPaneSizesPx = floatArrayOf(50f, 100f, 50f),
+        )
+
+        assertEquals(listOf(25f, 50f, 25f), sizes)
+        assertEquals(100f, sizes.sum(), 0.01f)
+    }
+
+    @Test
+    fun `pane-specific minimum scaling tolerates float rounding`() {
+        val state = SplitterState(
+            paneCount = 2,
+            stored = doubleArrayOf(0.48),
+            minPanePx = 160f,
+        ) {}
+
+        val sizes = state.paneSizes(
+            totalPx = 24.405657f,
+            minimumPaneSizesPx = floatArrayOf(52f, 160f),
+        )
+
+        assertTrue(sizes.all { it >= 0f })
+        assertEquals(24.405657f, sizes.sum(), 0.0001f)
+    }
+
     private fun assertNull(value: Any?, message: String) {
         assertFalse(value != null, message)
     }

app-desktop/src/test/kotlin/kst4contest/view/compose/StationContextMenuStateTest.kt

@@ -0,0 +1,90 @@
+package kst4contest.view.compose
+
+import androidx.compose.ui.unit.IntOffset
+import androidx.compose.ui.unit.IntRect
+import androidx.compose.ui.unit.IntSize
+import androidx.compose.ui.unit.LayoutDirection
+import kst4contest.model.Band
+import kst4contest.model.ChatCategory
+import kst4contest.model.ChatMember
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertNull
+import org.junit.jupiter.api.Assertions.assertSame
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+
+class StationContextMenuStateTest {
+
+    @Test
+    fun `single row target is selected immediately with its context source`() {
+        val selections = mutableListOf<Pair<ChatMember, StationSelectionSource>>()
+        val state = StationContextMenuState { member, source -> selections += member to source }
+        val member = member("DL1ABC", 2)
+
+        state.open(listOf(member), StationSelectionSource.STATION_CONTEXT_MENU, IntOffset(10, 20))
+
+        assertSame(member, state.target)
+        assertEquals(listOf(member to StationSelectionSource.STATION_CONTEXT_MENU), selections)
+    }
+
+    @Test
+    fun `grouped map target requires an explicit full callsign and category choice`() {
+        val selections = mutableListOf<Pair<ChatMember, StationSelectionSource>>()
+        val state = StationContextMenuState { member, source -> selections += member to source }
+        val main = member("DN9APW-2", 2)
+        val second = member("DN9APW-2", 3)
+
+        state.open(
+            listOf(main, second, main),
+            StationSelectionSource.MAP_CONTEXT_MENU,
+            IntOffset(30, 40),
+        )
+
+        assertNull(state.target)
+        assertEquals(2, state.candidates.size)
+        assertEquals(emptyList<Pair<ChatMember, StationSelectionSource>>(), selections)
+
+        state.chooseTarget(second)
+
+        assertSame(second, state.target)
+        assertEquals(listOf(second to StationSelectionSource.MAP_CONTEXT_MENU), selections)
+    }
+
+    @Test
+    fun `target label retains the full suffix and category`() {
+        val target = member("DN9APW-70", 3)
+
+        val label = stationContextTargetLabel(target)
+
+        assertTrue(label.startsWith("DN9APW-70 | "))
+    }
+
+    @Test
+    fun `worked menu state follows the existing per-band flags`() {
+        val target = member("DL1ABC", 2)
+        target.isWorked144 = true
+
+        assertTrue(target.isWorkedOn(Band.B_144))
+        assertFalse(target.isWorkedOn(Band.B_432))
+    }
+
+    @Test
+    fun `popup anchor is clamped at the window edge`() {
+        val provider = WindowPointPopupPositionProvider(IntOffset(990, 790))
+
+        val position = provider.calculatePosition(
+            anchorBounds = IntRect.Zero,
+            windowSize = IntSize(1_000, 800),
+            layoutDirection = LayoutDirection.Ltr,
+            popupContentSize = IntSize(300, 250),
+        )
+
+        assertEquals(IntOffset(700, 550), position)
+    }
+
+    private fun member(callSign: String, category: Int) = ChatMember().apply {
+        this.callSign = callSign
+        chatCategory = ChatCategory(category)
+    }
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/StationFilterBarScreenTest.kt

@@ -10,10 +10,13 @@ import androidx.compose.ui.test.assertIsOff
 import androidx.compose.ui.test.assertIsOn
 import androidx.compose.ui.test.assertTextEquals
 import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.onNodeWithTag
 import androidx.compose.ui.test.performClick
 import androidx.compose.ui.test.runComposeUiTest
 import androidx.compose.ui.unit.dp
 import kst4contest.model.Band
+import kst4contest.model.ChatPreferences
+import kst4contest.view.compose.ObservedValue
 import kst4contest.view.compose.tabs.checkBeside
 import kst4contest.view.compose.tabs.fieldBeside
 import kst4contest.view.compose.tabs.showTab
@@ -23,7 +26,10 @@ import org.junit.jupiter.api.Assertions.assertEquals
 import org.junit.jupiter.api.Assertions.assertFalse
 import org.junit.jupiter.api.Assertions.assertTrue
 import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.io.TempDir
+import java.nio.file.Path
 import java.util.EnumSet
+import kotlin.math.abs
 
 /**
  * The QRB part of the station filter bar, drawn (#21).
@@ -35,7 +41,7 @@ import java.util.EnumSet
  * Headless: only a composition, no window.
  */
 @OptIn(ExperimentalTestApi::class)
-class StationFilterBarScreenTest {
+class StationFilterBarScreenTest(@param:TempDir private val directory: Path) {
 
     private val maxLabel = "Show only QRB [km] <="
     private val minLabel = "Show only QRB [km] >"
@@ -43,6 +49,7 @@ class StationFilterBarScreenTest {
     private class Bar {
         val filters = StationFilterState()
         var changes = 0
+        val explicitQtfDirections = mutableListOf<Double>()
     }
 
     private fun ComposeUiTest.showBar(): Bar {
@@ -51,12 +58,127 @@ class StationFilterBarScreenTest {
             StationFilterBar(
                 filters = bar.filters,
                 activeBands = EnumSet.of(Band.B_144),
+                reachability = ReachabilityState(EnumSet.of(Band.B_144)),
                 onChanged = { bar.changes++ },
+                onQtfDirectionChanged = { bar.explicitQtfDirections += it },
             )
         }
         return bar
     }
 
+    @Test
+    fun aValidManualQtfEntryIsReportedEvenWhileTheFilterIsOff() = runComposeUiTest {
+        val bar = showBar()
+
+        type("Show only QTF:", "127.5")
+
+        assertFalse(bar.filters.qtfEnabled)
+        assertEquals(listOf(127.5), bar.explicitQtfDirections)
+    }
+
+    @Test
+    fun everyBearingButtonReportsItsExplicitDirection() = runComposeUiTest {
+        val bar = showBar()
+
+        Bearing.entries.forEach { bearing ->
+            onNodeWithText(bearing.name).performClick()
+        }
+
+        assertEquals(Bearing.entries.map { it.degrees }, bar.explicitQtfDirections)
+    }
+
+    @Test
+    fun deselectingABearingDoesNotReportAnotherExplicitDirection() = runComposeUiTest {
+        val bar = showBar()
+
+        onNodeWithText("NE").performClick()
+        onNodeWithText("NE").performClick()
+
+        assertFalse(bar.filters.qtfEnabled)
+        assertEquals(listOf(45.0), bar.explicitQtfDirections)
+    }
+
+    @Test
+    fun defaultManualHeadingMakesNorthEastVisibleToTheMapObserverWhileFilterIsOff() = runComposeUiTest {
+        val prefs = ChatPreferences(directory.resolve("preferences.xml"))
+        val filters = StationFilterState()
+        val mapHeading = ObservedValue(prefs.actualQTF)
+        try {
+            showTab {
+                StationFilterBar(
+                    filters = filters,
+                    activeBands = EnumSet.of(Band.B_144),
+                    reachability = ReachabilityState(EnumSet.of(Band.B_144)),
+                    onChanged = {},
+                    onQtfDirectionChanged = { applyExplicitQtfHeading(prefs, it) },
+                )
+            }
+
+            assertFalse(filters.qtfEnabled)
+            onNodeWithText("NE").performClick()
+            waitForIdle()
+
+            assertEquals(45.0, prefs.actualQTF.get(), 0.0001)
+            assertEquals(45.0, requireNotNull(mapHeading.value), 0.0001)
+            assertEquals(135.0, prefs.stn_qtfDefault, 0.0001)
+        } finally {
+            mapHeading.release()
+        }
+    }
+
+    @Test
+    fun resetAndQtfCheckboxChangesDoNotReportAnExplicitDirection() = runComposeUiTest {
+        val bar = showBar()
+        toggle("Show only QTF:")
+        onNodeWithText("Reset filters").performClick()
+
+        assertTrue(bar.explicitQtfDirections.isEmpty())
+    }
+
+    @Test
+    fun invalidManualQtfEntriesAreNotReported() = runComposeUiTest {
+        val bar = showBar()
+
+        listOf("NaN", "Infinity", "-1", "360.1").forEach { type("Show only QTF:", it) }
+
+        assertTrue(bar.explicitQtfDirections.isEmpty())
+        assertEquals(0.0, bar.filters.qtfDegrees, 0.0001)
+    }
+
+    @Test
+    fun reachabilityBandChangesDoNotCalculateUntilTheButtonIsClicked() = runComposeUiTest {
+        val filters = StationFilterState()
+        val station = kst4contest.model.ChatMember()
+        var calculations = 0
+        val reachability = ReachabilityState(
+            activeBands = EnumSet.of(Band.B_144, Band.B_432),
+            resolveAutoBand = { Band.B_144 },
+            selectedStation = { station },
+            calculate = { member, band ->
+                assertEquals(station, member)
+                assertEquals(Band.B_432, band)
+                calculations++
+            },
+        )
+
+        showTab {
+            StationFilterBar(
+                filters = filters,
+                activeBands = EnumSet.of(Band.B_144, Band.B_432),
+                reachability = reachability,
+                onChanged = { },
+            )
+        }
+
+        onNodeWithText("Reachability").assertIsDisplayed()
+        onNodeWithText("Auto").performClick()
+        awaitNode(inPopup("432")).performClick()
+        assertEquals(0, calculations)
+
+        onNodeWithText("Calc selected").performClick()
+        assertEquals(1, calculations)
+    }
+
     @Test
     fun theMinimumQrbControlsWriteTheMinimumFilterOnly() = runComposeUiTest {
         val bar = showBar()
@@ -133,7 +255,12 @@ class StationFilterBarScreenTest {
         setContent {
             Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
                 Box(Modifier.width(width)) {
-                    StationFilterBar(filters = filters, activeBands = EnumSet.of(Band.B_144), onChanged = {})
+                    StationFilterBar(
+                        filters = filters,
+                        activeBands = EnumSet.of(Band.B_144),
+                        reachability = ReachabilityState(EnumSet.of(Band.B_144)),
+                        onChanged = {},
+                    )
                 }
             }
         }
@@ -145,6 +272,10 @@ class StationFilterBarScreenTest {
                 onNodeWithText(maxLabel),
                 onNodeWithText(minLabel),
                 onNodeWithText("Show only QTF:"),
+                onNodeWithText("Inactive stations"),
+                onNodeWithText("Only new grids"),
+                onNodeWithText("AS next 5m"),
+                onNodeWithText("Calc selected"),
                 fieldBeside(maxLabel),
                 fieldBeside(minLabel),
             )
@@ -154,4 +285,61 @@ class StationFilterBarScreenTest {
             assertTrue(right <= limit + 0.5f, "a control ends at $right px, beyond the $limit px wide bar")
         }
     }
+
+    @Test
+    fun filterControlsShareOneHeightAndBearingsShareOneCompactWidth() = runComposeUiTest {
+        showBar()
+
+        val fieldHeight = fieldBeside(maxLabel).fetchSemanticsNode().boundsInRoot.height
+        val checkboxHeight = checkBeside(maxLabel).fetchSemanticsNode().boundsInRoot.height
+        val findFieldHeight = onNodeWithText("Find...").fetchSemanticsNode().boundsInRoot.height
+        val controlHeights = listOf("Reset filters", "N", "Auto", "Calc selected")
+            .map { onNodeWithText(it).fetchSemanticsNode().boundsInRoot.height } +
+            listOf(fieldHeight, checkboxHeight, findFieldHeight)
+        assertTrue(
+            controlHeights.max() - controlHeights.min() <= 1f,
+            "filter control heights differ: $controlHeights",
+        )
+
+        val bearingWidths = Bearing.entries
+            .map { onNodeWithText(it.name).fetchSemanticsNode().boundsInRoot.width }
+        assertTrue(
+            bearingWidths.max() - bearingWidths.min() <= 1f,
+            "bearing widths differ: $bearingWidths",
+        )
+        val expectedWidth = with(density) { Density.DIRECTION_BUTTON_WIDTH.toPx() }
+        assertTrue(
+            bearingWidths.all { abs(it - expectedWidth) <= 1f },
+            "bearing buttons are not $expectedWidth px wide: $bearingWidths",
+        )
+    }
+
+    @Test
+    fun functionalFilterGroupsRemainDistinctAndInsideANarrowBar() = runComposeUiTest {
+        val width = 300.dp
+        setContent {
+            Kst4ContestTheme(darkMode = true, baseFontSizeSp = 12f) {
+                Box(Modifier.width(width)) {
+                    StationFilterBar(
+                        filters = StationFilterState(),
+                        activeBands = EnumSet.of(Band.B_144),
+                        reachability = ReachabilityState(EnumSet.of(Band.B_144)),
+                        onChanged = {},
+                    )
+                }
+            }
+        }
+
+        val limit = with(density) { width.toPx() }
+        listOf(
+            FILTER_DISTANCE_GROUP_TAG,
+            FILTER_DIRECTION_GROUP_TAG,
+            FILTER_STATION_GROUP_TAG,
+            FILTER_WORKED_GROUP_TAG,
+            FILTER_PROPAGATION_GROUP_TAG,
+        ).forEach { tag ->
+            val bounds = onNodeWithTag(tag).assertIsDisplayed().fetchSemanticsNode().boundsInRoot
+            assertTrue(bounds.left >= 0f && bounds.right <= limit + 0.5f, "$tag crosses the filter bar")
+        }
+    }
 }

app-desktop/src/test/kotlin/kst4contest/view/compose/StationListScreenTest.kt

@@ -2,17 +2,23 @@ package kst4contest.view.compose
 
 import androidx.compose.ui.test.ComposeUiTest
 import androidx.compose.ui.test.ExperimentalTestApi
+import androidx.compose.ui.test.MouseButton
+import androidx.compose.ui.test.click
 import androidx.compose.ui.test.onAllNodesWithText
 import androidx.compose.ui.test.onNodeWithText
 import androidx.compose.ui.test.performClick
+import androidx.compose.ui.test.performMouseInput
 import androidx.compose.ui.test.runComposeUiTest
+import androidx.compose.ui.unit.IntOffset
 import kst4contest.model.AirPlane
 import kst4contest.model.AirPlaneReflectionInfo
 import kst4contest.model.Band
 import kst4contest.model.ChatCategory
 import kst4contest.model.ChatMember
+import kst4contest.model.RecentChatJoin
 import org.junit.jupiter.api.Assertions.assertEquals
 import org.junit.jupiter.api.Assertions.assertSame
+import org.junit.jupiter.api.Assertions.assertTrue
 import org.junit.jupiter.api.Test
 import java.util.EnumSet
 
@@ -41,6 +47,14 @@ import java.util.EnumSet
 @OptIn(ExperimentalTestApi::class)
 class StationListScreenTest {
 
+    @Test
+    fun anEmptyTableKeepsItsStructureAndExplainsTheEmptyBody() = runComposeUiTest {
+        show(stationList())
+
+        onNodeWithText("No entries").assertExists()
+        onNodeWithText("QRB").assertExists()
+    }
+
     private fun stationList(): DataTableState<ChatMember> = DataTableState(
         StationColumns.all(
             tropoOf = { "" },
@@ -77,10 +91,15 @@ class StationListScreenTest {
     private fun ComposeUiTest.show(
         state: DataTableState<ChatMember>,
         onRowClick: (ChatMember) -> Unit = {},
+        onRowContextMenu: ((ChatMember, IntOffset) -> Unit)? = null,
     ) {
         setContent {
             Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
-                DataTableView(state = state, onRowClick = onRowClick)
+                DataTableView(
+                    state = state,
+                    onRowClick = onRowClick,
+                    onRowContextMenu = onRowContextMenu,
+                )
             }
         }
         waitForIdle()
@@ -99,7 +118,7 @@ class StationListScreenTest {
         val inSecond = station("DL1ABC", category = 3)
         val clicked = mutableListOf<ChatMember>()
 
-        show(state) { clicked += it }
+        show(state, onRowClick = { clicked += it })
         runOnIdle { state.replaceRows(listOf(inMain, inSecond)) }
         waitForIdle()
 
@@ -140,6 +159,7 @@ class StationListScreenTest {
         onNodeWithText("QRB").performClick()
         waitForIdle()
 
+        assertEquals("qrb", state.sortedColumnId, "clicking the header did not select its sort")
         onNodeWithText("DL2BBB").assertDoesNotExist()
         assertEquals(listOf("DL1AAA", "DL3CCC"), drawnOrder("DL3CCC", "DL1AAA"))
     }
@@ -162,6 +182,7 @@ class StationListScreenTest {
         onNodeWithText("AP [minutes / pot%]").performClick()
         waitForIdle()
 
+        assertEquals("airscout", state.sortedColumnId, "clicking the header did not select its sort")
         assertEquals(
             listOf("DL1THREE", "DL1THIRTEEN", "DL1NONE"),
             drawnOrder("DL1THIRTEEN", "DL1NONE", "DL1THREE"),
@@ -196,6 +217,52 @@ class StationListScreenTest {
         assertEquals(null, state.selectedRow)
     }
 
+    @Test
+    fun aSecondaryClickReportsTheExactStationAndWindowPosition() = runComposeUiTest {
+        val state = stationList()
+        val member = station("DL1ABC", category = 3)
+        state.replaceRows(listOf(member))
+        val requests = mutableListOf<Pair<ChatMember, IntOffset>>()
+
+        show(state, onRowContextMenu = { target, position -> requests += target to position })
+        onNodeWithText("DL1ABC").performMouseInput {
+            click(button = MouseButton.Secondary)
+        }
+        waitForIdle()
+
+        assertEquals(1, requests.size)
+        assertSame(member, requests.single().first)
+        assertTrue(requests.single().second.x >= 0 && requests.single().second.y >= 0)
+    }
+
+    @Test
+    fun anExplicitSelectionScrollsUsingTheCurrentSortedPosition() = runComposeUiTest {
+        val selection = StationSelectionState()
+        val state = DataTableState(
+            StationColumns.all(
+                tropoOf = { "" },
+                priorityScoreOf = { 0.0 },
+                formatBand = { _, _, _ -> "" },
+                activeBands = EnumSet.noneOf(Band::class.java),
+            ),
+            RowKeys.byValue(StationColumns::rowKey),
+            initialSortColumnId = "callsign",
+            selectionModel = selection,
+            keepSelectionVisible = true,
+        )
+        val stations = (1..60).map { number -> station("DL${number.toString().padStart(2, '0')}TEST") }
+        state.replaceRows(stations.reversed())
+
+        show(state)
+        onNodeWithText("DL60TEST").assertDoesNotExist()
+
+        runOnIdle { selection.select(stations.last(), StationSelectionSource.PUBLIC_MESSAGE) }
+        waitForIdle()
+
+        onNodeWithText("DL60TEST").assertExists()
+        assertSame(stations.last(), state.selectedRow)
+    }
+
     /**
      * A station's fields change in place and the application calls forceRedraw: the list
      * filters again, so a station the filter now excludes leaves the screen (#21).
@@ -221,4 +288,33 @@ class StationListScreenTest {
         onNodeWithText("DL1MOVE").assertDoesNotExist()
         onNodeWithText("DL2STAY").assertExists()
     }
+
+    @Test
+    fun onlyTheCallsignCellOfARecentlyJoinedStationIsEmphasized() = runComposeUiTest {
+        val state = stationList()
+        val joined = station("HB9SJV", 2)
+        val existing = station("DL1OLD", 2)
+        val recent = NewJoinedState(clock = { 5_000L }, onSelect = {}).apply {
+            updateActiveMembers(listOf(joined, existing))
+            updateEvents(listOf(RecentChatJoin("HB9SJV", 2, 1_000L)))
+        }
+        val emphasized = mutableSetOf<Pair<String, String>>()
+        state.replaceRows(listOf(joined, existing))
+
+        setContent {
+            Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
+                DataTableView(
+                    state = state,
+                    emphasizeCell = { member, column ->
+                        val emphasize = column.id == "callsign" && recent.isRecent(member)
+                        if (emphasize) emphasized += member.callSign to column.id
+                        emphasize
+                    },
+                )
+            }
+        }
+        waitForIdle()
+
+        assertEquals(setOf("HB9SJV" to "callsign"), emphasized)
+    }
 }

app-desktop/src/test/kotlin/kst4contest/view/compose/StationSelectionStateTest.kt

@@ -0,0 +1,139 @@
+package kst4contest.view.compose
+
+import kst4contest.model.ChatCategory
+import kst4contest.model.ChatMember
+import kst4contest.model.ChatMessage
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertNotEquals
+import org.junit.jupiter.api.Assertions.assertSame
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+
+class StationSelectionStateTest {
+
+    @Test
+    fun `identity includes the full callsign and category`() {
+        val main = station("DN9APW-2", 2)
+        val second = station("DN9APW-2", 3)
+
+        assertNotEquals(StationIdentity.of(main), StationIdentity.of(second))
+        assertEquals(2, StationIdentity.of(main)?.categoryNumber)
+        assertEquals("DN9APW-2", StationIdentity.of(main)?.callSign)
+    }
+
+    @Test
+    fun `selecting the same station again creates another scroll request`() {
+        val state = StationSelectionState()
+        val station = station("DL1ABC", 2)
+
+        state.select(station, StationSelectionSource.PUBLIC_MESSAGE)
+        val first = state.scrollRequestRevision
+        state.select(station, StationSelectionSource.MAP)
+
+        assertSame(station, state.selected)
+        assertTrue(state.scrollRequestRevision > first)
+        assertEquals(StationSelectionSource.MAP, state.lastSource)
+    }
+
+    @Test
+    fun `direct station table selections do not request scrolling`() {
+        val state = StationSelectionState()
+
+        state.select(station("DL1ABC", 2), StationSelectionSource.STATION_TABLE)
+
+        assertEquals(0L, state.scrollRequestRevision)
+    }
+
+    @Test
+    fun `station table context selection does not request scrolling`() {
+        val state = StationSelectionState()
+
+        state.select(station("DL1ABC", 2), StationSelectionSource.STATION_CONTEXT_MENU)
+
+        assertEquals(0L, state.scrollRequestRevision)
+    }
+
+    @Test
+    fun `map context selection requests scrolling again for the same station`() {
+        val state = StationSelectionState()
+        val station = station("DL1ABC", 2)
+
+        state.select(station, StationSelectionSource.MAP_CONTEXT_MENU)
+        val first = state.scrollRequestRevision
+        state.select(station, StationSelectionSource.MAP_CONTEXT_MENU)
+
+        assertTrue(state.scrollRequestRevision > first)
+    }
+
+    @Test
+    fun `reconciling a refreshed instance keeps the selection without requesting a scroll`() {
+        val state = StationSelectionState()
+        state.select(station("DL1ABC", 2), StationSelectionSource.STATION_TABLE)
+        val revision = state.scrollRequestRevision
+        val explicitRevision = state.explicitSelectionRevision
+        val refreshed = station("DL1ABC", 2)
+
+        state.reconcile(refreshed)
+
+        assertSame(refreshed, state.selected)
+        assertEquals(revision, state.scrollRequestRevision)
+        assertEquals(explicitRevision, state.explicitSelectionRevision)
+    }
+
+    @Test
+    fun `roster reconciliation does not publish explicit navigation`() {
+        val state = StationSelectionState()
+        val requests = mutableListOf<Pair<ChatMember?, StationSelectionSource>>()
+        state.explicitSelectionListener = { member, source -> requests += member to source }
+        state.select(station("DL1ABC", 2), StationSelectionSource.PUBLIC_MESSAGE)
+
+        state.reconcile(station("DL1ABC", 2))
+
+        assertEquals(1, requests.size)
+        assertEquals(StationSelectionSource.PUBLIC_MESSAGE, requests.single().second)
+    }
+
+    @Test
+    fun `incoming directed message targets its sender`() {
+        val message = directedMessage(sender = "DL1ABC", receiver = "OWN", category = 2)
+
+        assertEquals(
+            StationIdentity("DL1ABC", 2),
+            DirectedMessageStationTarget.forMessage(message, "OWN"),
+        )
+    }
+
+    @Test
+    fun `own directed message targets its receiver`() {
+        val message = directedMessage(sender = "own", receiver = "DL2XYZ", category = 3)
+
+        assertEquals(
+            StationIdentity("DL2XYZ", 3),
+            DirectedMessageStationTarget.forMessage(message, "OWN"),
+        )
+    }
+
+    @Test
+    fun `historical own message can obtain its receiver from the payload`() {
+        val message = directedMessage(sender = "OWN", receiver = null, category = 2).apply {
+            messageText = "(DL3OLD) test"
+        }
+
+        assertEquals(
+            StationIdentity("DL3OLD", 2),
+            DirectedMessageStationTarget.forMessage(message, "OWN"),
+        )
+    }
+
+    private fun station(callSign: String, category: Int): ChatMember = ChatMember().apply {
+        this.callSign = callSign
+        chatCategory = ChatCategory(category)
+    }
+
+    private fun directedMessage(sender: String, receiver: String?, category: Int) = ChatMessage().apply {
+        this.sender = station(sender, category)
+        this.receiver = receiver?.let { station(it, category) }
+        chatCategory = ChatCategory(category)
+        messageText = "test"
+    }
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/StationWorkspaceVisualRenderingTest.kt

@@ -0,0 +1,159 @@
+package kst4contest.view.compose
+
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.ui.ImageComposeScene
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.unit.Density
+import androidx.compose.ui.unit.dp
+import kst4contest.model.Band
+import kst4contest.model.ChatCategory
+import kst4contest.model.ChatMember
+import kst4contest.model.ChatMessage
+import kst4contest.model.RecentChatJoin
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+import java.nio.file.Files
+import java.nio.file.Path
+import java.util.EnumSet
+import java.util.function.Consumer
+
+/** Produces review images for the station filters, join bar and selected-station splitter. */
+class StationWorkspaceVisualRenderingTest {
+
+    @Test
+    fun rendersDayAndEveningAt100And125Percent() {
+        val reportDirectory = Path.of("build", "reports", "station-workspace-ui")
+        Files.createDirectories(reportDirectory)
+
+        listOf(
+            Scenario("wide", 700, 768),
+            Scenario("narrow", 360, 768),
+            Scenario("short", 570, 480),
+        ).forEach { scenario ->
+            listOf(false, true).forEach { darkMode ->
+                listOf(1f, 1.25f).forEach { scale ->
+                    val bytes = render(scenario, darkMode, scale)
+                    val palette = if (darkMode) "evening" else "day"
+                    val scaling = if (scale == 1f) "100" else "125"
+                    val name = "${scenario.name}-$palette-$scaling.png"
+                    Files.write(reportDirectory.resolve(name), bytes)
+                    assertTrue(bytes.size > 10_000, "$name did not render")
+                }
+            }
+        }
+    }
+
+    private fun render(scenario: Scenario, darkMode: Boolean, scale: Float): ByteArray {
+        val members = (1..7).map { index -> member("DL${index}ABC", if (index == 7) 3 else 2) }
+        val selectedMember = members.last().apply {
+            qrb = 438.2
+            setQTFdirection(76.0)
+            isQrv432 = false
+        }
+        val newJoined = NewJoinedState(clock = { 20_000L }, onSelect = {}).apply {
+            updateActiveMembers(members)
+            updateEvents(members.mapIndexed { index, member ->
+                RecentChatJoin(member.callSign, member.chatCategory.categoryNumber, 10_000L + index)
+            })
+        }
+        val stations = DataTableState(
+            StationColumns.all(
+                tropoOf = { "12 dB" },
+                priorityScoreOf = { 500.0 },
+                formatBand = { _, _, _ -> "" },
+                activeBands = EnumSet.of(Band.B_144, Band.B_432),
+            ),
+            RowKeys.byValue(StationColumns::rowKey),
+        ).apply { replaceRows(members) }
+        val priority = TopPriorityState(
+            topStations = { listOf(members[4] to 767.0, members[3] to 740.0) },
+            onSelect = {},
+        ).apply { refresh() }
+        val selected = SelectedStationState(
+            propagateNotQrv = {},
+            createSked = { _, _, _, _ -> true },
+            detectBands = { "Bands: 144/432 MHz" },
+        ).apply { select(selectedMember) }
+        val selectedMessages = DataTableState(
+            SelectedStationMessageColumns.all(),
+            RowKeys.byReference<ChatMessage>(),
+        )
+
+        return onEventThread {
+            val scene = ImageComposeScene(
+                width = 1366,
+                height = scenario.height,
+                density = Density(scale),
+            ) {
+                Kst4ContestTheme(darkMode = darkMode, baseFontSizeSp = 12f) {
+                    Surface(
+                        modifier = Modifier.fillMaxSize(),
+                        color = MaterialTheme.colorScheme.background,
+                    ) {
+                        Box(Modifier.fillMaxSize()) {
+                        Column(
+                            Modifier
+                                .width(scenario.width.dp)
+                                .fillMaxHeight()
+                                .align(Alignment.TopEnd)
+                                .padding(4.dp),
+                        ) {
+                            StationFilterBar(
+                                filters = StationFilterState(),
+                                activeBands = EnumSet.of(Band.B_144, Band.B_432),
+                                reachability = ReachabilityState(EnumSet.of(Band.B_144, Band.B_432)),
+                                onChanged = {},
+                            )
+                            DataTableView(
+                                state = stations,
+                                modifier = Modifier.weight(0.45f),
+                                emphasizeCell = { member, column ->
+                                    column.id == "callsign" && newJoined.isRecent(member)
+                                },
+                            )
+                            TopPriorityBar(
+                                state = priority,
+                                newJoined = newJoined,
+                                onShowMore = {},
+                            )
+                            SelectedStationPanel(
+                                state = selected,
+                                messages = selectedMessages,
+                                activeBands = EnumSet.of(Band.B_144, Band.B_432),
+                                contentSplitter = SplitterState(2, doubleArrayOf(0.48)) {},
+                                openInBrowser = Consumer {},
+                                onShowOnMap = {},
+                                onShowPathInAirScout = {},
+                                modifier = Modifier.weight(0.55f),
+                            )
+                        }
+                        }
+                    }
+                }
+            }
+
+            try {
+                scene.render().encodeToData()!!.bytes
+            } finally {
+                scene.close()
+            }
+        }
+    }
+
+    private fun member(callSign: String, category: Int) = ChatMember().apply {
+        this.callSign = callSign
+        chatCategory = ChatCategory(category)
+        qra = "JO31AA"
+        name = "Contest station"
+    }
+
+    private data class Scenario(val name: String, val width: Int, val height: Int)
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/StatusBarScreenTest.kt

@@ -0,0 +1,48 @@
+package kst4contest.view.compose
+
+import androidx.compose.ui.test.ExperimentalTestApi
+import androidx.compose.ui.test.assertHasClickAction
+import androidx.compose.ui.test.assertHasNoClickAction
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.performClick
+import androidx.compose.ui.test.runComposeUiTest
+import kst4contest.model.ThreadStateMessage
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Test
+
+@OptIn(ExperimentalTestApi::class)
+class StatusBarScreenTest {
+
+    @Test
+    fun onlyAThreadWithARegisteredActionIsClickable() = runComposeUiTest {
+        val buttons = ThreadStatusButtons()
+        var beaconClicks = 0
+        buttons.registerAction("MyBeacon") { beaconClicks++ }
+        buttons.update("MyBeacon", status("off"))
+        buttons.update("Cluster", status("on"))
+
+        setContent {
+            Kst4ContestTheme(darkMode = false, baseFontSizeSp = 12f) {
+                StatusBar(
+                    connectionState = null,
+                    connectionDetail = null,
+                    skedNotice = BlinkingNotice(),
+                    bandUpgradeNotice = BlinkingNotice(),
+                    threadButtons = buttons,
+                    showConnectionBadge = false,
+                )
+            }
+        }
+        waitForIdle()
+
+        onNodeWithText("MyBeacon: off").assertHasClickAction().performClick()
+        waitForIdle()
+        assertEquals(1, beaconClicks)
+        onNodeWithText("Cluster: on").assertHasNoClickAction()
+    }
+
+    private fun status(description: String): ThreadStateMessage =
+        ThreadStateMessage("worker", true, description, false).apply {
+            runningInformationTextDescription = description
+        }
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/StatusIndicatorStateTest.kt

@@ -407,6 +407,52 @@ class StatusIndicatorStateTest {
         assertEquals("Cluster: b", button.label)
     }
 
+    @Test
+    fun `an action registered before the first report reaches the created button`() {
+        val buttons = ThreadStatusButtons()
+        var clicks = 0
+        buttons.registerAction("MyBeacon") { clicks++ }
+
+        buttons.update("MyBeacon", threadState(nick = "beacon", description = "off", info = "disabled"))
+        buttons.buttons.single().activate()
+
+        assertEquals(1, clicks)
+    }
+
+    @Test
+    fun `an action registered after a report reaches the existing button`() {
+        val buttons = ThreadStatusButtons()
+        var clicks = 0
+        buttons.update("MyBeacon", threadState(nick = "beacon", description = "off", info = "disabled"))
+
+        buttons.registerAction("MyBeacon") { clicks++ }
+        buttons.buttons.single().activate()
+
+        assertEquals(1, clicks)
+    }
+
+    @Test
+    fun `a thread without an action cannot be activated`() {
+        val buttons = ThreadStatusButtons()
+        buttons.update("Cluster", threadState(nick = "cluster", description = "on", info = "running"))
+
+        assertFalse(buttons.buttons.single().activate())
+    }
+
+    @Test
+    fun `a status provider replaces a stale worker snapshot when the UI applies it`() {
+        val buttons = ThreadStatusButtons()
+        var current = threadState(nick = "beacon", description = "on", info = "enabled")
+        buttons.registerStatusProvider("MyBeacon") { current }
+        val queuedSnapshot = current
+        current = threadState(nick = "beacon", description = "off", info = "disabled")
+
+        buttons.update("MyBeacon", queuedSnapshot)
+
+        assertEquals("MyBeacon: off", buttons.buttons.single().label)
+        assertEquals("disabled", buttons.buttons.single().tooltip)
+    }
+
     private fun threadState(nick: String, description: String, info: String): ThreadStateMessage =
         ThreadStateMessage(nick, true, info, false).apply {
             setRunningInformationTextDescription(description)

app-desktop/src/test/kotlin/kst4contest/view/compose/TimelineStateTest.kt

@@ -124,7 +124,9 @@ class TimelineStateTest {
     @Test
     fun `the lanes stack downwards in even steps`() {
         assertEquals(2f, TimelineGeometry.laneY(0))
-        assertEquals(22f, TimelineGeometry.laneY(1))
+        assertEquals(18f, TimelineGeometry.laneY(1))
+        assertEquals(34f, TimelineGeometry.laneY(2))
+        assertEquals(50f, TimelineGeometry.laneY(3))
     }
 
     /**
@@ -151,14 +153,45 @@ class TimelineStateTest {
         )
     }
 
-    /** A third lane would land on the axis, so it shares the last one instead. */
+    /** Unknown producer values stay visible in the nearest defined lane. */
     @Test
     fun `a lane beyond the available ones folds onto the last`() {
-        assertEquals(TimelineGeometry.laneY(1), TimelineGeometry.laneY(2))
+        assertEquals(TimelineGeometry.laneY(3), TimelineGeometry.laneY(7))
-        assertEquals(TimelineGeometry.laneY(1), TimelineGeometry.laneY(7))
         assertEquals(TimelineGeometry.laneY(0), TimelineGeometry.laneY(-1))
     }
 
+    @Test
+    fun `lane definitions expose the producer semantics in display order`() {
+        assertEquals(
+            listOf(
+                TimelineLane.IN_BEAM_1,
+                TimelineLane.IN_BEAM_2,
+                TimelineLane.PRIORITY_1,
+                TimelineLane.PRIORITY_2,
+            ),
+            TimelineLane.entries,
+        )
+        assertEquals(TimelineLane.PRIORITY_1, TimelineLane.forIndex(2))
+        assertEquals(TimelineLane.PRIORITY_2, TimelineLane.forIndex(99))
+    }
+
+    @Test
+    fun `a wide timeline gets five minute ticks over the full preview`() {
+        val ticks = TimelineGeometry.minuteTicks(axisWidth = 600f, minimumLabelSpacing = 30f)
+
+        assertEquals(listOf(0, 5, 10, 15, 20, 25, 30), ticks.map { it.minutes })
+        assertEquals(0f, ticks.first().x, 0.01f)
+        assertEquals(600f, ticks.last().x, 0.01f)
+    }
+
+    @Test
+    fun `tick interval grows when labels would overlap`() {
+        val ticks = TimelineGeometry.minuteTicks(axisWidth = 100f, minimumLabelSpacing = 30f)
+
+        assertEquals(listOf(0, 10, 20, 30), ticks.map { it.minutes })
+        assertTrue(ticks.zipWithNext().all { (left, right) -> right.x - left.x >= 30f })
+    }
+
     // ---- the labels --------------------------------------------------------
 
     @Test

app-desktop/src/test/kotlin/kst4contest/view/compose/TimelineViewScreenTest.kt

@@ -0,0 +1,34 @@
+package kst4contest.view.compose
+
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.ui.Modifier
+import androidx.compose.foundation.layout.width
+import androidx.compose.ui.test.ExperimentalTestApi
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.runComposeUiTest
+import androidx.compose.ui.unit.dp
+import org.junit.jupiter.api.Test
+
+@OptIn(ExperimentalTestApi::class)
+class TimelineViewScreenTest {
+
+    @Test
+    fun `timeline shows all producer lanes and relative minute ticks`() = runComposeUiTest {
+        setContent {
+            MaterialTheme {
+                TimelineView(
+                    state = TimelineState(),
+                    onCandidateClicked = {},
+                    modifier = Modifier.width(700.dp),
+                )
+            }
+        }
+
+        listOf("In beam 1", "In beam 2", "Priority 1", "Priority 2", "Skeds").forEach {
+            onNodeWithText(it).assertExists()
+        }
+        listOf("0 min", "+5 min", "+10 min", "+15 min", "+20 min", "+25 min", "+30 min").forEach {
+            onNodeWithText(it).assertExists()
+        }
+    }
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/TopPriorityCandidatesWindowTest.kt

@@ -32,17 +32,19 @@ class TopPriorityCandidatesWindowTest {
     /** Runs [block] against a rendered list of [twoCandidates] and reports what it picked. */
     private fun picking(block: (ImageComposeScene) -> Unit): String? {
         var picked: String? = null
-        val scene = ImageComposeScene(width = 360, height = 500, density = Density(1f)) {
+        onEventThread {
-            TopPriorityCandidatesWindow.CandidateListForTest(twoCandidates) {
+            val scene = ImageComposeScene(width = 360, height = 500, density = Density(1f)) {
-                picked = it.displayCallSign
+                TopPriorityCandidatesWindow.CandidateListForTest(twoCandidates) {
+                    picked = it.displayCallSign
+                }
+            }
+            try {
+                scene.render()
+                block(scene)
+                scene.render()
+            } finally {
+                scene.close()
             }
-        }
-        try {
-            scene.render()
-            block(scene)
-            scene.render()
-        } finally {
-            scene.close()
         }
         return picked
     }
@@ -78,13 +80,15 @@ class TopPriorityCandidatesWindowTest {
     @Test
     fun `the list renders with candidates and without`() {
         listOf(emptyList(), twoCandidates).forEach { ranking ->
-            val scene = ImageComposeScene(width = 360, height = 500, density = Density(1f)) {
+            onEventThread {
-                TopPriorityCandidatesWindow.CandidateListForTest(ranking) { }
+                val scene = ImageComposeScene(width = 360, height = 500, density = Density(1f)) {
-            }
+                    TopPriorityCandidatesWindow.CandidateListForTest(ranking) { }
-            try {
+                }
-                scene.render()
+                try {
-            } finally {
+                    scene.render()
-                scene.close()
+                } finally {
+                    scene.close()
+                }
             }
         }
     }

app-desktop/src/test/kotlin/kst4contest/view/compose/map/ComposeStationMapDrawingTest.kt

@@ -4,7 +4,9 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.ui.ImageComposeScene
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.Density
+import kst4contest.view.compose.onEventThread
 import kst4contest.view.map.MapCallsignRawSnapshot
+import kst4contest.view.map.MapViewport
 import kst4contest.view.map.TileFetcher
 import org.junit.jupiter.api.Assertions.assertEquals
 import org.junit.jupiter.api.Assertions.assertTrue
@@ -15,6 +17,7 @@ import java.io.IOException
 import java.nio.file.Files
 import javax.imageio.ImageIO
 import kotlin.math.abs
+import kotlin.math.roundToInt
 
 /**
  * What the map actually puts on the canvas.
@@ -44,6 +47,10 @@ class ComposeStationMapDrawingTest {
 
     private val darkMapBackground = 0x23282D
 
+    private val workedGridBorder = 0x000000
+
+    private val selectedDotBorder = 0xFF9900
+
     /*
      * An empty cache and a source that always fails, so that "tiles never arrive" holds by
      * construction. The default fetcher read the user's disk cache and the real tile
@@ -64,27 +71,38 @@ class ComposeStationMapDrawingTest {
         zoom: Float,
         markers: List<MapCallsignRawSnapshot> = listOf(station("DN9APW", "JO50JP", 51.0, 10.0)),
         ownLocator6: String = "",
+        workedGrossFields: Set<String> = emptySet(),
+        darkMode: Boolean = true,
+        selectedTarget: MapCallsignRawSnapshot? = null,
+        spatialFilterOverlay: SpatialFilterOverlayState? = null,
+        antennaBeamWidthDeg: Double = 0.0,
+        maxQrbKm: Double = 0.0,
     ): BufferedImage {
-        val scene = ImageComposeScene(canvasWidth, canvasHeight, Density(1f)) {
+        return onEventThread {
-            ComposeStationMap(
+            val scene = ImageComposeScene(canvasWidth, canvasHeight, Density(1f)) {
-                markers = markers,
+                ComposeStationMap(
-                tileFetcher = offlineTileFetcher,
+                    markers = markers,
-                mapState = MapState(zoom = zoom, centerLon = 10.0, centerLat = 51.0),
+                    tileFetcher = offlineTileFetcher,
-                groupingEnabled = false,
+                    mapState = MapState(zoom = zoom, centerLon = 10.0, centerLat = 51.0),
-                selectedMarkerCallsign = null,
+                    groupingEnabled = false,
-                ownLocator6 = ownLocator6,
+                    selectedMarkerCallsign = null,
-                antennaAzimuthDeg = 90.0,
+                    ownLocator6 = ownLocator6,
-                antennaBeamWidthDeg = 0.0,
+                    antennaAzimuthDeg = 90.0,
-                maxQrbKm = 0.0,
+                    antennaBeamWidthDeg = antennaBeamWidthDeg,
-                onMarkerClicked = null,
+                    maxQrbKm = maxQrbKm,
-                darkMode = true,
+                    selectedTarget = selectedTarget,
-                modifier = Modifier.fillMaxSize(),
+                    spatialFilterOverlay = spatialFilterOverlay,
-            )
+                    onMarkerClicked = null,
-        }
+                    workedGrossFields = workedGrossFields,
-        try {
+                    darkMode = darkMode,
-            return ImageIO.read(ByteArrayInputStream(scene.render().encodeToData()!!.bytes))
+                    modifier = Modifier.fillMaxSize(),
-        } finally {
+                )
-            scene.close()
+            }
+            try {
+                ImageIO.read(ByteArrayInputStream(scene.render().encodeToData()!!.bytes))
+            } finally {
+                scene.close()
+            }
         }
     }
 
@@ -98,6 +116,16 @@ class ComposeStationMapDrawingTest {
         return count
     }
 
+    private fun changedPixels(before: BufferedImage, after: BufferedImage): Int {
+        var changed = 0
+        for (x in 0 until before.width) {
+            for (y in 0 until before.height) {
+                if (before.getRGB(x, y) != after.getRGB(x, y)) changed++
+            }
+        }
+        return changed
+    }
+
     /** The widest horizontal run of a colour, which for a ring is its outer diameter. */
     private fun widestRun(image: BufferedImage, rgb: Int): Int {
         var widest = 0
@@ -229,6 +257,97 @@ class ComposeStationMapDrawingTest {
         }
     }
 
+    @Test
+    fun `worked gross fields use a visible black border in both themes`() {
+        val dark = render(6f, markers = emptyList(), workedGrossFields = setOf("JO51"))
+        val light = render(6f, markers = emptyList(), workedGrossFields = setOf("JO51"), darkMode = false)
+
+        assertTrue(countColour(dark, workedGridBorder) > 0) {
+            "the Evening map has no black Worked-grid border"
+        }
+        assertTrue(countColour(light, workedGridBorder) > 0) {
+            "the Day map has no black Worked-grid border"
+        }
+    }
+
+    @Test
+    fun `worked gross field interior is covered by thirty percent black`() {
+        val viewport = MapViewport(10.0, 51.0, 6.0, canvasWidth.toDouble(), canvasHeight.toDouble())
+        val cell = visibleWorkedGrossFieldCells(viewport, setOf("JO51")).single()
+        val x = viewport.screenX(cell.westLon() + (cell.eastLon() - cell.westLon()) * 0.25).toInt()
+        val y = viewport.screenY(cell.northLat() + (cell.southLat() - cell.northLat()) * 0.25).toInt()
+
+        for (darkMode in listOf(false, true)) {
+            val withoutWorked = render(6f, markers = emptyList(), darkMode = darkMode)
+            val withWorked = render(
+                6f,
+                markers = emptyList(),
+                workedGrossFields = setOf("JO51"),
+                darkMode = darkMode,
+            )
+            val before = withoutWorked.getRGB(x, y)
+            val after = withWorked.getRGB(x, y)
+
+            for (shift in listOf(16, 8, 0)) {
+                val beforeChannel = (before shr shift) and 0xFF
+                val afterChannel = (after shr shift) and 0xFF
+                val expected = (beforeChannel * 0.70).roundToInt()
+                assertTrue(abs(afterChannel - expected) <= 2) {
+                    "Worked fill in darkMode=$darkMode changed channel $shift from " +
+                        "$beforeChannel to $afterChannel; expected $expected for 30% black"
+                }
+            }
+        }
+    }
+
+    @Test
+    fun `active spatial filters add a distinct overlay in both themes`() {
+        val overlay = SpatialFilterOverlayState(
+            qtfEnabled = true,
+            qtfDegrees = 90.0,
+            beamWidthDeg = 60.0,
+            minQrbEnabled = true,
+            minQrbKm = 50.0,
+            maxQrbEnabled = true,
+            maxQrbKm = 400.0,
+        )
+
+        for (darkMode in listOf(false, true)) {
+            val without = render(6f, markers = emptyList(), ownLocator6 = "JO50JP", darkMode = darkMode)
+            val with = render(
+                6f,
+                markers = emptyList(),
+                ownLocator6 = "JO50JP",
+                darkMode = darkMode,
+                spatialFilterOverlay = overlay,
+            )
+
+            assertTrue(changedPixels(without, with) > 1_000) {
+                "the spatial filter overlay was not visible in darkMode=$darkMode"
+            }
+        }
+    }
+
+    @Test
+    fun `a filtered selected target is drawn without joining the normal marker list`() {
+        val targetLocation = kst4contest.locatorUtils.Location("JO51AA")
+        val target = station(
+            "DL1HIDE",
+            "JO51AA",
+            targetLocation.latitude.toDegrees(),
+            targetLocation.longitude.toDegrees(),
+        )
+
+        val image = render(
+            6f,
+            markers = emptyList(),
+            ownLocator6 = "JO50JP",
+            selectedTarget = target,
+        )
+
+        assertTrue(countColour(image, selectedDotBorder) > 0, "the separate selected marker is missing")
+    }
+
     /**
      * Every grid line has to be drawn once.
      *

app-desktop/src/test/kotlin/kst4contest/view/compose/map/ComposeStationMapLayoutTest.kt

@@ -4,6 +4,7 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.ui.ImageComposeScene
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.Density
+import kst4contest.view.compose.onEventThread
 import kst4contest.view.map.MapCallsignRawSnapshot
 import kst4contest.view.map.TileFetcher
 import org.junit.jupiter.api.Test
@@ -33,30 +34,32 @@ class ComposeStationMapLayoutTest {
     )
 
     private fun renderAt(widthPx: Int, heightPx: Int, zoom: Float) {
-        val scene = ImageComposeScene(
+        onEventThread {
-            width = widthPx,
+            val scene = ImageComposeScene(
-            height = heightPx,
+                width = widthPx,
-            density = Density(1f),
+                height = heightPx,
-        ) {
+                density = Density(1f),
-            ComposeStationMap(
+            ) {
-                markers = stations,
+                ComposeStationMap(
-                tileFetcher = TileFetcher(),
+                    markers = stations,
-                mapState = MapState(zoom = zoom, centerLon = 10.0, centerLat = 51.0),
+                    tileFetcher = TileFetcher(),
-                groupingEnabled = true,
+                    mapState = MapState(zoom = zoom, centerLon = 10.0, centerLat = 51.0),
-                selectedMarkerCallsign = "F5JMI",
+                    groupingEnabled = true,
-                ownLocator6 = "JO50JP",
+                    selectedMarkerCallsign = "F5JMI",
-                antennaAzimuthDeg = 229.0,
+                    ownLocator6 = "JO50JP",
-                antennaBeamWidthDeg = 60.0,
+                    antennaAzimuthDeg = 229.0,
-                maxQrbKm = 800.0,
+                    antennaBeamWidthDeg = 60.0,
-                onMarkerClicked = null,
+                    maxQrbKm = 800.0,
-                darkMode = true,
+                    onMarkerClicked = null,
-                modifier = Modifier.fillMaxSize(),
+                    darkMode = true,
-            )
+                    modifier = Modifier.fillMaxSize(),
-        }
+                )
-        try {
+            }
-            scene.render()
+            try {
-        } finally {
+                scene.render()
-            scene.close()
+            } finally {
+                scene.close()
+            }
         }
     }
 

app-desktop/src/test/kotlin/kst4contest/view/compose/map/MapDisplaySettingsStateTest.kt

@@ -0,0 +1,29 @@
+package kst4contest.view.compose.map
+
+import kst4contest.model.ChatPreferences
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.io.TempDir
+import java.nio.file.Path
+
+class MapDisplaySettingsStateTest {
+
+    @TempDir
+    lateinit var directory: Path
+
+    @Test
+    fun `refresh publishes applied beam geometry from preferences`() {
+        val preferences = ChatPreferences(directory.resolve("preferences.xml")).apply {
+            stn_antennaBeamWidthDeg = 50.0
+            stn_maxQRBDefault = 750.0
+        }
+        val state = MapDisplaySettingsState(preferences)
+
+        preferences.stn_antennaBeamWidthDeg = 72.0
+        preferences.stn_maxQRBDefault = 1_100.0
+        state.refreshFromPreferences()
+
+        assertEquals(72.0, state.antennaBeamWidthDeg)
+        assertEquals(1_100.0, state.maxQrbKm)
+    }
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/map/MapNavigationStateTest.kt

@@ -0,0 +1,42 @@
+package kst4contest.view.compose.map
+
+import kst4contest.view.compose.StationIdentity
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+
+class MapNavigationStateTest {
+
+    @Test
+    fun `repeated station choices remain observable`() {
+        val state = MapNavigationState()
+        val identity = StationIdentity("DL1ABC", 2)
+
+        state.fitSelectedPath(identity)
+        val firstRevision = state.requestRevision
+        state.fitSelectedPath(identity)
+
+        assertTrue(state.requestRevision > firstRevision)
+        assertEquals(MapNavigationRequest.FitSelectedPath(identity), state.request)
+    }
+
+    @Test
+    fun `latest explicit action replaces an older one`() {
+        val state = MapNavigationState()
+
+        state.fitSelectedPath(StationIdentity("DL1ABC", 2))
+        state.centerOnQtf(45.0)
+
+        assertEquals(MapNavigationRequest.CenterOnQtf(45.0), state.request)
+    }
+
+    @Test
+    fun `invalid QTF values do not create requests`() {
+        val state = MapNavigationState()
+
+        listOf(Double.NaN, Double.POSITIVE_INFINITY, -1.0, 360.1).forEach(state::centerOnQtf)
+
+        assertEquals(0L, state.requestRevision)
+        assertEquals(null, state.request)
+    }
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/map/MapOverlayLegendScreenTest.kt

@@ -0,0 +1,60 @@
+package kst4contest.view.compose.map
+
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.width
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.test.ExperimentalTestApi
+import androidx.compose.ui.test.assertIsDisplayed
+import androidx.compose.ui.test.onNodeWithTag
+import androidx.compose.ui.test.onNodeWithText
+import androidx.compose.ui.test.runComposeUiTest
+import androidx.compose.ui.unit.dp
+import kst4contest.view.compose.Kst4ContestTheme
+import kst4contest.view.i18n.LanguageStore
+import kst4contest.view.i18n.LocalStrings
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+import java.util.Locale
+
+@OptIn(ExperimentalTestApi::class)
+class MapOverlayLegendScreenTest {
+
+    @Test
+    fun germanEveningLegendWrapsBothItemsInsideANarrowHeader() = runComposeUiTest {
+        var storedLanguage = "de"
+        val languages = LanguageStore(
+            storedLanguage = { storedLanguage },
+            storeLanguage = { storedLanguage = it },
+            systemDefault = Locale.GERMANY,
+        )
+
+        try {
+            setContent {
+                CompositionLocalProvider(LocalStrings provides languages.strings) {
+                    Kst4ContestTheme(darkMode = true, baseFontSizeSp = 12f) {
+                        Box(Modifier.width(110.dp)) {
+                            MapOverlayLegend(
+                                showAntenna = true,
+                                showSpatialFilters = true,
+                                darkMode = true,
+                            )
+                        }
+                    }
+                }
+            }
+
+            onNodeWithText("Antenne").assertIsDisplayed()
+            onNodeWithText("Aktive Filter").assertIsDisplayed()
+
+            val antenna = onNodeWithTag(MAP_ANTENNA_LEGEND_TAG).fetchSemanticsNode().boundsInRoot
+            val filters = onNodeWithTag(MAP_FILTER_LEGEND_TAG).fetchSemanticsNode().boundsInRoot
+            val widthLimit = with(density) { 110.dp.toPx() }
+            assertTrue(antenna.right <= widthLimit + 0.5f)
+            assertTrue(filters.right <= widthLimit + 0.5f)
+            assertTrue(filters.top >= antenna.bottom, "the legend items did not wrap at narrow width")
+        } finally {
+            runOnIdle { languages.use("en") }
+        }
+    }
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/map/PathAnalysisDetailsLayoutTest.kt

@@ -4,6 +4,7 @@ import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.ui.ImageComposeScene
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.Density
+import kst4contest.view.compose.onEventThread
 import kst4contest.view.map.PathAnalysisResult
 import org.junit.jupiter.api.Test
 
@@ -25,21 +26,23 @@ class PathAnalysisDetailsLayoutTest {
     private val narrowWidthPx = 120
 
     private fun renderAt(widthPx: Int, result: PathAnalysisResult?) {
-        val scene = ImageComposeScene(
+        onEventThread {
-            width = widthPx,
+            val scene = ImageComposeScene(
-            height = 600,
+                width = widthPx,
-            density = Density(1f),
+                height = 600,
-        ) {
+                density = Density(1f),
-            PathAnalysisDetails(
+            ) {
-                result = result,
+                PathAnalysisDetails(
-                darkMode = true,
+                    result = result,
-                modifier = Modifier.fillMaxWidth(),
+                    darkMode = true,
-            )
+                    modifier = Modifier.fillMaxWidth(),
-        }
+                )
-        try {
+            }
-            scene.render()
+            try {
-        } finally {
+                scene.render()
-            scene.close()
+            } finally {
+                scene.close()
+            }
         }
     }
 

app-desktop/src/test/kotlin/kst4contest/view/compose/map/PathAnalysisDetailsWidthTest.kt

@@ -4,6 +4,7 @@ import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.ui.ImageComposeScene
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.Density
+import kst4contest.view.compose.onEventThread
 import kst4contest.view.map.PathAnalysisResult
 import org.junit.jupiter.api.Assertions.assertTrue
 import org.junit.jupiter.api.Test
@@ -31,18 +32,20 @@ class PathAnalysisDetailsWidthTest {
     private val assessmentBackground = 0x33383E
 
     private fun render(paneWidthPx: Int, heightPx: Int = 600): BufferedImage {
-        val scene = ImageComposeScene(width = paneWidthPx, height = heightPx, density = Density(1f)) {
+        return onEventThread {
-            PathAnalysisDetails(
+            val scene = ImageComposeScene(width = paneWidthPx, height = heightPx, density = Density(1f)) {
-                result = PathAnalysisResult.loading("JO50JP", "JN24JB", "F5JMI"),
+                PathAnalysisDetails(
-                darkMode = true,
+                    result = PathAnalysisResult.loading("JO50JP", "JN24JB", "F5JMI"),
-                modifier = Modifier.fillMaxWidth(),
+                    darkMode = true,
-            )
+                    modifier = Modifier.fillMaxWidth(),
-        }
+                )
-        try {
+            }
-            val png = scene.render().encodeToData()!!.bytes
+            try {
-            return ImageIO.read(ByteArrayInputStream(png))
+                val png = scene.render().encodeToData()!!.bytes
-        } finally {
+                ImageIO.read(ByteArrayInputStream(png))
-            scene.close()
+            } finally {
+                scene.close()
+            }
         }
     }
 

app-desktop/src/test/kotlin/kst4contest/view/compose/map/PathProfileChartLayoutTest.kt

@@ -4,6 +4,7 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.ui.ImageComposeScene
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.Density
+import kst4contest.view.compose.onEventThread
 import org.junit.jupiter.api.Test
 
 /**
@@ -18,17 +19,19 @@ import org.junit.jupiter.api.Test
 class PathProfileChartLayoutTest {
 
     private fun renderAt(widthPx: Int, heightPx: Int) {
-        val scene = ImageComposeScene(
+        onEventThread {
-            width = widthPx,
+            val scene = ImageComposeScene(
-            height = heightPx,
+                width = widthPx,
-            density = Density(1f),
+                height = heightPx,
-        ) {
+                density = Density(1f),
-            PathProfileChart(modifier = Modifier.fillMaxSize(), darkMode = true)
+            ) {
-        }
+                PathProfileChart(modifier = Modifier.fillMaxSize(), darkMode = true)
-        try {
+            }
-            scene.render()
+            try {
-        } finally {
+                scene.render()
-            scene.close()
+            } finally {
+                scene.close()
+            }
         }
     }
 

app-desktop/src/test/kotlin/kst4contest/view/compose/map/SpatialFilterOverlayStateTest.kt

@@ -0,0 +1,91 @@
+package kst4contest.view.compose.map
+
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+
+class SpatialFilterOverlayStateTest {
+
+    @Test
+    fun `maximum QRB is inclusive and minimum QRB is exclusive`() {
+        val state = overlay(minEnabled = true, minKm = 200.0, maxEnabled = true, maxKm = 500.0)
+
+        assertFalse(state.accepts(200.0, 90.0))
+        assertTrue(state.accepts(200.1, 90.0))
+        assertTrue(state.accepts(500.0, 90.0))
+        assertFalse(state.accepts(500.1, 90.0))
+    }
+
+    @Test
+    fun `QTF uses the same wrapped beamwidth semantics as the station filter`() {
+        val state = overlay(qtf = true, direction = 0.0, beamWidth = 60.0)
+
+        assertTrue(state.accepts(300.0, 350.0))
+        assertTrue(state.accepts(300.0, 30.0))
+        assertFalse(state.accepts(300.0, 31.0))
+    }
+
+    @Test
+    fun `unusual full-circle beamwidth retains the existing station filter semantics`() {
+        val state = overlay(qtf = true, direction = 0.0, beamWidth = 360.0)
+
+        assertTrue(state.accepts(300.0, 180.0))
+        assertFalse(state.accepts(300.0, 0.0))
+    }
+
+    @Test
+    fun `minimum above maximum is an empty distance range`() {
+        val state = overlay(minEnabled = true, minKm = 500.0, maxEnabled = true, maxKm = 200.0)
+
+        assertTrue(state.hasEmptyDistanceRange)
+        assertFalse(state.accepts(100.0, 0.0))
+        assertFalse(state.accepts(300.0, 0.0))
+        assertFalse(state.accepts(600.0, 0.0))
+    }
+
+    @Test
+    fun `non-finite active values cannot be rendered as a misleading area`() {
+        assertFalse(overlay(qtf = true, direction = Double.NaN).hasRenderableValues)
+        assertFalse(overlay(minEnabled = true, minKm = Double.POSITIVE_INFINITY).hasRenderableValues)
+        assertFalse(overlay(maxEnabled = true, maxKm = Double.NaN).hasRenderableValues)
+    }
+
+    @Test
+    fun `zero distance boundaries report only actually drawable geometry`() {
+        assertFalse(overlay(maxEnabled = true, maxKm = 0.0).hasDrawableGeometry)
+        assertFalse(overlay(qtf = true, maxEnabled = true, maxKm = 0.0).hasDrawableGeometry)
+        assertFalse(
+            overlay(minEnabled = true, minKm = 0.0, maxEnabled = true, maxKm = 0.0).hasDrawableGeometry
+        )
+        assertTrue(overlay(minEnabled = true, minKm = 0.0).hasDrawableGeometry)
+        assertTrue(overlay(qtf = true).hasDrawableGeometry)
+        assertTrue(overlay(minEnabled = true, minKm = 100.0, maxEnabled = true, maxKm = 0.0).hasDrawableGeometry)
+        assertTrue(overlay(maxEnabled = true, maxKm = 500.0).hasDrawableGeometry)
+    }
+
+    @Test
+    fun `no spatial filter accepts finite positions`() {
+        val state = overlay()
+
+        assertFalse(state.isActive)
+        assertTrue(state.accepts(1000.0, 275.0))
+    }
+
+    private fun overlay(
+        qtf: Boolean = false,
+        direction: Double = 0.0,
+        beamWidth: Double = 60.0,
+        minEnabled: Boolean = false,
+        minKm: Double = 0.0,
+        maxEnabled: Boolean = false,
+        maxKm: Double = 0.0,
+    ) = SpatialFilterOverlayState(
+        qtfEnabled = qtf,
+        qtfDegrees = direction,
+        beamWidthDeg = beamWidth,
+        minQrbEnabled = minEnabled,
+        minQrbKm = minKm,
+        maxQrbEnabled = maxEnabled,
+        maxQrbKm = maxKm,
+    )
+}

app-desktop/src/test/kotlin/kst4contest/view/compose/map/StationMapBodyLayoutTest.kt

@@ -15,6 +15,7 @@ import androidx.compose.ui.unit.dp
 import kst4contest.view.compose.SplitterOrientation
 import kst4contest.view.compose.SplitterPane
 import kst4contest.view.compose.SplitterState
+import kst4contest.view.compose.onEventThread
 import kst4contest.view.map.MapCallsignRawSnapshot
 import kst4contest.view.map.PathAnalysisResult
 import kst4contest.view.map.TileFetcher
@@ -88,13 +89,15 @@ class StationMapBodyLayoutTest {
     }
 
     private fun renderAt(widthPx: Int, heightPx: Int, pathAnalysisVisible: Boolean = true) {
-        val scene = ImageComposeScene(width = widthPx, height = heightPx, density = Density(1f)) {
+        onEventThread {
-            Body(pathAnalysisVisible)
+            val scene = ImageComposeScene(width = widthPx, height = heightPx, density = Density(1f)) {
-        }
+                Body(pathAnalysisVisible)
-        try {
+            }
-            scene.render()
+            try {
-        } finally {
+                scene.render()
-            scene.close()
+            } finally {
+                scene.close()
+            }
         }
     }