* Make DBController work on one database file per instance The controller was a static singleton: an eagerly created static instance opened the root database during class initialization, and both the connection and the path were static fields. A second operator profile in the same process was therefore impossible, and ChatController's own "new DBController()" never opened anything - it silently adopted the eagerly opened root connection. - drop the eager static instance in favour of a lazily created default instance - turn connection and path into instance state - add a constructor taking a database file name relative to the application directory plus a flag whether a missing file is seeded from the bundled template - create additional profile databases empty instead of seeding them: the bundled template carries 3452 foreign callsigns and user_version 0, which would show a new operator foreign data and trigger the full callsign normalization rebuild. The schema is created by the existing table setup. - remember the shutdown hook so closeDBConnection can deregister it; otherwise every profile switch would leave another hook holding a dead connection All SQL statements keep referencing the plain field and are unchanged. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Hpa6bjie5qkeNG62y6FmXm * Allow preferences and chat controller to be bound to a file set ChatPreferences gains a constructor taking a preferences file name relative to the application directory, so "profiles/OP2/preferences.xml" is as valid as the historic flat "preferences.xml". A missing file is still seeded from the bundled template, which gives an additional operator the same clean defaults a first installation gets. ChatController gains a constructor that passes both relative file names and the seed flag through to ChatPreferences and DBController. The existing constructors delegate to the historic file names, so nothing changes yet. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Hpa6bjie5qkeNG62y6FmXm * Introduce the operator profile model and its registry Adds the descriptor, the path derivation and the registry persistence for operator profiles. Nothing calls them yet, so behaviour is unchanged. The descriptor stores only a shared/own flag, never a path. All file names are derived in OperatorProfilePaths, so a stored path can never drift apart from the flag that produced it. A profile identifier is a stable, file system safe slug assigned once, so renaming a profile never moves a directory. The registry is created lazily. An installation that only has the historic flat layout gets no registry file and no profiles directory; the root profile is synthesised in memory instead. That keeps a single operator installation byte for byte the one it was before, and it keeps a downgrade to an older release a no-op. A missing, unreadable or malformed registry is logged and treated like an installation without additional profiles, never as an error. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Hpa6bjie5qkeNG62y6FmXm * Select the operator profile at startup Resolves the active operator profile before the chat controller is built and passes its two file names on, so preferences, layout and worked data follow the profile. The resolution is deliberately quiet for existing installations. With no registry or exactly one profile nothing is asked and nothing is written, so a single operator start is unchanged. Only from two profiles on does a small picker appear with the last used profile preselected, where Enter or a double click starts immediately. A "--profile" argument, or the equivalent system property, skips the picker; an unknown name warns and falls back to the normal selection instead of refusing to start. The startup decision itself lives in OperatorProfileBootstrap and contains no user interface code, so it is covered by headless tests. The window title gains the profile name only when a second profile exists. Command line parsing happens in init() and is kept in a process wide holder, because JavaFX only knows the parameters of the instance it launched itself. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Hpa6bjie5qkeNG62y6FmXm * Release the background resources a discarded runtime owns Several resources outlived a disconnect on purpose, which was harmless while a process ran exactly one session for its whole life. They are now released when the controller itself is closed: - the ON4KST connection supervisor thread, which stopByUser did not touch - the sked reminder scheduler, which had no shutdown at all - the reachability executor, whose shutdown method existed but was never called - the PSTRotator retry scheduler and its pending retry - the map tile proxy, whose stop method existed but was never called, leaving a server socket and a twelve thread pool behind - the station map bridge listeners and its coalescing animation, which would otherwise keep firing into a dead user interface These are real leaks today; they only become visible when a second runtime is built in the same process. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Hpa6bjie5qkeNG62y6FmXm * Switch the operator profile while the application is running Splits the teardown out of stop() into a reusable, idempotent shutdownRuntime() and adds File - Switch operator profile..., which tears the current runtime down and builds a fresh one for the selected profile. The new runtime is a new application instance rather than a second start() on the existing one. Many controls are instance fields created once, so reusing the instance would re-parent mounted nodes and register every listener twice. A fresh instance is safe because the class keeps no mutable static state. Closing every window during a switch would end the process under the JavaFX default, so the application takes over the exit decision: implicit exit is turned off, the main window gets an explicit close handler, and every exit path runs through the launcher. That also fixes losing the window layout on exit after a switch, because JavaFX only calls stop() on the instance it launched. The two view timers are now cancelled null-safe; stop() used to dereference them unguarded, which would fail if shutdown happened before they were created. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Hpa6bjie5qkeNG62y6FmXm * Manage operator profiles from the settings window Adds a "Profiles" tab, appended last so no established tab position shifts, offering create, duplicate, rename, delete, a switch between shared and own worked stations, and activation of another profile. Duplicating copies the whole configuration except callsign and password. The antenna, locator, layout and integration settings are exactly the work nobody wants to enter twice, while the credentials belong to one operator only. The root profile can neither be deleted nor moved off the common station database, because its files are the installation itself. The login callsign and its raw form now default to empty instead of a real callsign. The XML reader treats an empty element as "not set" and falls back to the field default, so without this change a profile created without credentials would come up carrying the callsign compiled into the defaults - and an operator could transmit under someone else's call. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Hpa6bjie5qkeNG62y6FmXm * Document operator profiles Adds a manual section in both languages covering where profile files live, the choice between shared and own worked stations, managing profiles, the startup selection and the --profile argument, switching while running, and the fact that passwords stay in clear text so profiles are not an access boundary. Records the architecture in PROJECT_CONTEXT: lazy registry, derived paths, why an additional profile database is created empty, why the login callsign default is empty, and the constraints of rebuilding the runtime for a switch. Adds a v1.50 changelog entry in both languages including the upgrade notes: no file is moved, and going back to an older release stays possible. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Hpa6bjie5qkeNG62y6FmXm * Make the terrain profile cache multi operator safe The cache stored a single owner identity in a meta table and dropped the whole TerrainProfileCache table whenever the configured callsign or locator differed from it. With several operator profiles that turns the cache into a permanent miss: every switch between two operators with different locators would discard every computed profile. Entries are separated by owner identity through the primary key already, so the wipe is replaced by an owner table that simply records which identities are in use. A different owner now misses the cache instead of clearing everybody's. The cache also moves out of the worked station database into its own global terrainprofilecache.db. Terrain profiles are pure geometry derived from two locators and a sample count; at a multi operator station both operators share one location, so a per profile copy would only double the traffic against the terrain service. No migration is needed, the new file refills itself, and the old tables stay readable for older releases. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Hpa6bjie5qkeNG62y6FmXm * Fail cleanly when the registry path has no directory SpotBugs flagged a null passed to Files.createTempFile: the null check guarded only createDirectories, while the temporary file creation would still have dereferenced it. The path is resolved absolute so this is practically unreachable, but bailing out with a log line is cheaper than the latent NPE. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Hpa6bjie5qkeNG62y6FmXm * Code Version 1.50 * Add the in-app update concept for 1.50 Captures the agreed design so it can be handed over later: extended update feed with per-artifact metadata, a build-time package-type marker, a testable check service replacing the blocking call in the ChatController constructor, a non-modal hint suppressed while connected to ON4KST, verified downloads and platform-specific execution. Concept only, nothing implemented yet. Line anchors were verified against this branch. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01HT8R7zTMoQnmJj6dGbaqqf * Use one base font size and a per-profile startup design JavaFX picks a 13px default font on macOS and Linux but 12px on Windows, so labels in fixed-size controls were cut off outside Windows. Both stylesheets now set 12px on the root. Each operator profile now chooses light or dark mode for startup on the GUI settings tab. The Windows menu entries remain a quick switch for the running session. All windows, including the update window and the top candidates list, follow the design, and the main window no longer starts light while the station map starts dark. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Show a drag-to-install layout in the macOS DMG The DMG window now has a background with an arrow from the app to the Applications folder, in the KST4Contest colours. Finder applies the layout through AppleScript; if that fails, e.g. on a headless runner, the script warns and builds the plain DMG as before. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Use the macOS system menu bar in all windows On macOS the main menus move into the system menu bar and are shared with the secondary windows, so they stay available whichever window has the focus. The connection state indicator becomes a read-only LINK menu there instead of the status bar button. Other platforms are unchanged. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * List direct commits on main in the release notes GitHub's generated release notes only cover merged pull requests, so commits pushed straight to main were missing. The release job now builds the notes itself: "What's Changed" holds "Commits on main" (first-parent, without bot and squash-merge commits) and GitHub's PR list as "Merged PRs". Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Build with Gradle in two modules, and free core of JavaFX Etappen 1 and 2 of the Compose migration (43 commits). The Maven build, the single source tree and the JPMS module-info went together. core now holds the domain and app-desktop the user interface, both built by Gradle, packaged through jpackage from Gradle, with SpotBugs and PMD wired in. JavaFX moves to the classpath, which is why the launcher is Main and not the Application subclass. The PR check, the nightly artifacts, the release and the AUR packages all build from Gradle; the macOS DMG points at its output. Verified on Linux, macOS and Windows. core then loses JavaFX entirely. It observes through kst4contest.observe -- ObservableValue, ObservableRoster, and UiDispatcher as the one boundary a worker thread crosses to touch the interface. The controller collections become rosters and the visible station list a pure derivation rather than a FilteredList/SortedList chain, which is also what fixed two focus defects only a load test had exposed: the keyboard focus stays where the operator put it, and the send field keeps it after a row click. The rule that outlives this commit: ObservableRoster is the store and the list a view is bound to is a mirror of it, never the other way round. * Draw the whole interface in Compose Etappen 3 to 6a of the migration (129 commits). Every window the operator sees is Compose; the JavaFX ones still exist beside them so the two could be compared against a live session, which is the only way the differences came to light. The toolchain first, then the settings window with its eleven tabs and 72 real preferences; then the multi-column table as a component, and with it the rules it needs -- stable row identity, a selection that survives a refresh, column order the operator can drag, and a repaint when the rows change rather than when the list instance does. Then the update and monitor windows, and the main window: 22 station columns, the filter bar, the selected-station panel, the message tabs, the priority bar, the sked controls, the status indicators and the timeline, assembled behind a splitter because Compose has none. The map stops being a WebView. A Compose canvas projects WebMercator tiles itself, with the clustering in core and an asynchronous fetcher in place of the local tile proxy; derive() becomes a pure Kotlin reimplementation instead of a reflection call into com.sun.javafx. Most of the volume here is parity the operator would notice rather than new behaviour: desktop density instead of Material's phone minimums, colours taken from the JavaFX stylesheets instead of Material's palette, row dividers, band columns, grid-square labels and their colours, the home marker and antenna beam, pinch-to-zoom under Wayland, and layouts that survive a window narrower than the chart they stack. Two lessons are worth more than the diff. A control bound to a value Compose cannot observe writes through and never redraws -- that one shipped repeatedly with a green build, because no test drew anything. And a layout that clips instead of wrapping is worse than one that is merely too narrow: half a word is the worst available outcome. * Remove JavaFX The second half of Etappe 6 (61 commits). grep -rl "javafx\." over both main source trees is empty, nothing imports javafx, neither classpath resolves it, and org.openjfx is out of the build and the version catalog. The finding that shaped the work: the JavaFX main window was built on every start and never shown -- primaryStage's setScene and show were both commented out. Most of those 11,655 lines were dead weight rather than a port. But not all of them, and that is the trap this commit is really about: dead-looking methods still fed live Compose sinks. They were cut at their seams instead of deleted, and a sweep script that follows calls was written to find them, because reading the code does not reveal them. In order: the colour derivation frozen as checked-in test data, so the pin survives JavaFX being removed instead of silently comparing against itself; the live feeds lifted out of the never-shown window and given names and tests; the dead scaffolding deleted in slices; then the lifecycle. UiDispatcher now delivers to the AWT event dispatch thread, the ten Alerts are modal Compose dialogs, HostServices gives way to java.awt.Desktop with the mailto/http split JavaFX did not need, and extends Application, start(Stage), stop and launch are gone -- main builds the runtime and a shutdown hook replaces stop(). An independent review found two deadlocks in that move, both the same failure class, both invisible to the build: a blocking wait on the event thread for work that can only advance on the event thread. The profile picker waited on a latch and froze the client for good; ComposeWindowHost.close waited on Thread.join and returned with the window still marked open, which made a profile switch raise the dead runtime's window and leave the rebuilt profile without its Connect button. A third came out of fixing them: a ComposeDialog built off the event thread cannot create its GL context and never paints. Three defects only a GUI run showed, never the build: an NPE on a deleted field, a Compose menu still hanging on deleted MenuItems, and a category bookkeeping field that looked dead but is read by the outgoing-message category resolution -- deleting it would have sent messages in the wrong category. The binding docs and the manual no longer describe a JavaFX client. * Draw the menu bar in Compose, and give the drawing layer a net What the removal left open (4 commits). Compose's MenuBar is a javax.swing.JMenuBar set on the window, so Swing draws it and no theme reaches it; with no look-and-feel configured that meant the default Metal menu above a themed window. The bar is drawn in the window now, except on macOS, where the system bar is where that platform expects it. Two renderers read one description -- mainMenuModel is a plain function of the state, which also gives the menus their first tests. Closing the main window quits the application again, and the window writes its size back to the profile; both had quietly stopped working when the last JavaFX stage went. Then Etappe 7. Four faults shipped in the settings-window branch alongside a green suite of 382 tests, because not one of those tests drew anything: a control that never redrew, a tab strip that clipped mid-word, a form taller than its window with no way down, and colours that came from Material rather than the stylesheet. One regression test per class, and the spec's acceptance criterion is met rather than assumed -- each fault was put back deliberately and the matching test watched to fail. The CI had never run the suite at all; it does now, headless. What that took was not Xvfb: skiko's native library links against libGL and only has to be loadable, since the drawing tests render in software. Without the package the whole Compose half of the suite dies with a message that reads like a missing display. Found by running the job under act rather than on GitHub. The six tests that open a real window skip headless by their own guard. The summary step counts from the result XML and fails on failures there, because this project's rule is never to infer a green suite from an exit code. * Make the colours adjustable per operator profile Six colour roles per design, per profile: surface, window surface, field interior, text, accent and separator line. A change applies at once in every open window and survives a restart once the settings are saved, like any other preference. Three sources, later wins role by role: the shipped stylesheet from the classpath, then the profile's own stylesheet file if there is one, then the overrides stored in the profile's preferences. resolvePalette is a pure function and reports where every role's colour came from, which the tab shows per field -- with two sources able to decide one colour, that is the only thing keeping "why is this colour what it is" answerable, and the spec calls it mandatory rather than decorative. Four things this had to get right, each learned the hard way and each pinned: A role is a selector and a property, not a property alone. Three of the six are stated outside .root -- text on .label, the separator on .separator *.line -- and -fx-background-color alone appears a dozen times in the evening sheet. Measured: the shipped daylight sheet states no colour at all, the evening sheet states five and implies the sixth. Kst4ContestTheme reads the palette from the store's state and not from remember. That read is what makes a change repaint every open window; remember(darkMode) held the palette until somebody toggled day/evening, so a change reached nothing. A derived colour follows its source's value, never its provenance. The root profile's own stylesheet is the one copyResourceIfRequired writes at every startup -- the shipped sheet itself -- so layer 2 declares the accent on every existing installation with nobody having chosen anything. Keying textAccent on "does this come from a file" repainted the evening accent from green to blue on upgrade and made "reset to shipped" disagree with "discard my changes". The contrast guard measures where colours are actually drawn, read off Theme.kt's Material mapping rather than off the role names: background and surface are both the window surface, and primary is textAccent, not accent. It reports a pair only when it is both under WCAG AA and worse than the shipped sheet -- the shipped sheets have three pairs under 4.5 themselves, so an absolute floor would warn on an untouched client and teach the operator to ignore warnings. The way back out of an unreadable palette is deliberately overbuilt, because it is the one failure that locks itself in. "Reset to the shipped colours" takes the shipped palette as a required parameter and reads no composition local, so there is no path by which it could be drawn in the colours it exists to undo; it looks out of place under a customised palette, and that is what makes it findable. Ctrl+Z, Ctrl+D and Ctrl+R reach the three ways back even with the caret in a colour field. A mistyped colour is refused and the field snaps back. The profile's stylesheet is the hand-editing route the copy under ~/.praktiKST has been promising since it was first written and never read. It is read now. A button writes the shipped template as a starting point and never replaces a file that is already there. An unreadable, truncated or non-CSS file does not prevent startup -- the role falls back to the shipped design. A sheet stating -fx-base and no -fx-background states the derived window surface too, the way JavaFX does, or the most natural hand edit would leave every window the shipped light grey. 101 new tests. All of it runs headless. * Document the adjustable colours, and record the design and the plan Both manuals get the Colours tab in full: the six roles, that a change applies at once but survives a restart only after Save settings, the three ways back with their keyboard shortcuts, what each provenance label means, and the readability notice that warns without refusing. Two things an operator would otherwise have to discover. The reset button is always drawn in the shipped colours and works when nothing else can be read -- the risk section of the design says plainly that a keyboard path only helps whoever knows it, so the manual is where this has to be written down. And the root profile already has both stylesheet files, because KST4Contest has been writing them at startup for years, so most of its roles report "from file" rather than "shipped" with identical values. PROJECT_CONTEXT.md records the decisions that outlive this stage: the three sources and their precedence, that a role is a selector and a property, that the theme must read the store's state rather than remember, where the contrast pairs come from, why the root profile's file layer always exists, and why the lifeline refuses the active palette. Also corrects its claim that CSS stays global -- a profile now owns its stylesheets. The design document and the implementation plan are kept as they were written, including the plan's own corrections where measuring the code contradicted it. * Speak the operator's language The interface is German or English, chosen per operator profile on the GUI tab, in force at once in every open window, and remembered across restarts. 376 texts in both languages. The texts are ordinary .properties files that nobody has to compile: a contributor copies the English one, translates the values, and opens a pull request. A third module -- build tooling that never ships -- turns them into Kotlin before anything compiles, which is what makes a mistyped key and a wrong argument count compile errors rather than things an operator discovers. It lives in the main build rather than buildSrc because buildSrc's tests do not run on `./gradlew build`, measured, and a generator whose tests never run is the exact failure it exists to prevent. Incompleteness is allowed and incorrectness is not. A missing key warns and falls back to English, so a partial contributed language can be submitted at all; an orphan key, a placeholder the translation drops, a duplicate key or an unreadable file fail the build with the generator's own message naming the file. The argument count always comes from the English base. German is held complete by a test because it ships; a contributed language is not. What is deliberately not translated is the harder half. Protocol frames and chat commands would break the connection or go unread; the beacon texts, auto answers, snippets and shortcuts go to other radio amateurs and sit in every operator's stored profile; the 273 println calls in core are diagnostics, and a German stack trace is worse for whoever reads the bug report; and QRA, QRG, QTF, LOS, Fresnel and wkd read the same in either language. Three tests guard the boundary by measuring behaviour rather than text: the protocol frames built under three locales, every preference default compared by reflection, and no translation value being a protocol command. The reflective one is the only one that covers what nobody thought of. One insight turned up three times. Anything built outside a composition freezes the language it was built in: the window title, the settings tab strip and every column header are all constructed once at startup -- the columns from Java -- so each now holds a function read when it is drawn. That also fixed something older and unrelated to language: the main window's title was a fixed "KST4Contest (Compose)" for the whole session, where the JavaFX window had carried the live connection line. It carries it again. A column's id is never translated. It is what the remembered widths and order are keyed on. * Document the two languages, and how to contribute a third Both manuals get the language picker in full: where it sits, that it applies per profile and takes effect at once in every open window, and -- at more length -- what is deliberately left alone and why. An operator who sees an English beacon text in a German client should be able to read that it is meant that way. The contribution route is written down in both, because plain text files are only useful if somebody knows they are there: copy, translate, submit; a partial file is welcome; the build reports mistakes by file name and writes a worksheet of what is still missing. PROJECT_CONTEXT records the decisions that outlive this stage -- the four kinds of text and the rule that the addressee decides, that core produces no display text, that incompleteness is allowed and incorrectness is not, that anything built outside a composition needs its text read inside one, and that a column id is never translated. CLAUDE.md said two modules; there are three, and the third never ships. It also states the German orthography now, which this session got wrong across a spec and two plans: ss after a short vowel, so muss and dass. * Remove the implementation plans now that every stage is executed Thirteen plans, all of them step-by-step instructions for work that is committed. A plan left behind reads to the next person like an open intention, and these describe a build that no longer exists -- the first still explains how to introduce Gradle. The specifications stay. They say why the architecture is what it is, which the code cannot, and three of them are still argued from. The live-findings note stays too: CLAUDE.md sends people to it, and its hardest lesson -- that a blocking wait on the AWT event thread deadlocks the interface while the build stays green -- is written down nowhere else. Its sweep script stays as well. The note argues explicitly that the script belongs beside the finding so the next reader can measure rather than believe, and removing it would contradict the reasoning it illustrates. Two references in the note and one in the JavaFX-removal spec pointed at plans and now say where the reasoning went instead. * Point the JavaFX-removal spec at where its plan's reasoning went * Remove the stray release-metadata patch from the working tree A 416-line patch file that was applied long ago and has sat in the repository root since. It predates this branch and stays in the shared history, where rewriting it would mean rewriting commits that are already on main and on origin. * Check the translation files in CI and say what they hold classes already runs the generator, so an orphan key, a dropped placeholder or a duplicate fails the compile job with the generator's own message naming the file -- verified by breaking strings_de.properties on purpose. A step summary counts each language against the base, so the author of a translation PR sees what they covered without reading the build log. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> * Refuse a translation key that would not form a Kotlin name The generator escaped every translation value but emitted the key verbatim as the member identifier, and identifierFor strips only . _ - -- so a key carrying a space, a brace, a quote or a newline from a \uXXXX escape broke out of val <name>: String get() = lookup(...) into an init block or property initializer that runs when Strings is instantiated. Translation files are the contribution surface that arrives by pull request, so this was a path from a merged .properties change to code in every client. The generated identifier is now held to letters-then-letters-and-digits before any source is written, alongside the existing orphan and collision refusals. Proven by replaying a file-writing payload against the built generator: it now throws and writes nothing. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> * Port the rebased diagnostics and session logging onto the modules origin/main landed replayable session logging (MessageHistoryRecorder), file logging (ApplicationFileLogging) and a user-list refresh split on the old flat layout. The rebase carried the new files, but three things needed the new architecture: - ChatController.fireUserListUpdate() used javafx Platform; core is toolkit-free now, so it dispatches through uiDispatcher like every other fire method. - Two new tests were left in the old src/test/java; moved into core. - ScoreServiceRefreshTest mocked javafx Platform statically; it now injects the DirectUiDispatcher the no-arg constructor installs. The Leaflet map performance work was dropped with the HTML map it optimised. classes testClasses and test are green: 1069 tests, 0 failures, 3 skipped. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> * Give the debug-to-file recording a home in the Compose settings origin/main added a checkbox to the old JavaFX settings that recorded the whole ON4KST session to file; the Compose redraw dropped the old settings UI, so the toggle had no control left even though the preference and its wiring survived the rebase. It returns to the message-handling tab: the state writes the preference and asks the application, through a new SettingsHost callback, to open or close the error-log handler and the history recorder in the order the old checkbox kept. The explanatory line and its German translation say that passwords are redacted. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> * Fix Codex review findings on PR 89: station row key, map selection, sort after filter - Station row key now includes the chat category, so the same callsign in two categories no longer collides. - Map marker click and Reset view go through the central station selection. - Sorting now operates on the filtered rows, so filters stay effective. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Keep the map drawing test off the network and the user's tile cache The test assumed no tile ever arrives, but it used the default TileFetcher, which reads the real disk cache and the OSM tile server. On CI a tile now and then landed before the frame was rendered and covered the background the 'unreachable tile source' test asserts on. An empty temporary cache and a source that always fails make the assumption hold by construction. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
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User Interface
🇬🇧 You are reading the English version | 🇩🇪 Deutsche Version
Connecting to the Chat
Before connecting for the first time, configure the local login callsign and password, the locator shared by the TCP session, and the primary chat category in the settings window. If a second category is required, enable and select it there. KST4Contest signs in once and adds the second category through Single Sign-on within the same TCP session.
The connection can be started in two ways:
- Connect to … in the settings window applies the values currently entered there and starts the connection.
- File → Connect to … uses the settings already applied in KST4Contest.
Use Save Settings if changed values should also be available after the next programme start.
An active connection can be terminated using File → Disconnect or Disconnect in the settings window. Exit + disconnect terminates the connection and then closes the programme.
If an established connection is lost unexpectedly, KST4Contest waits for a limited period and then attempts a controlled reconnect to ON4KST. A failed initial connection attempt no longer blocks the user interface.
The LINK indicator in the main window shows whether only the TCP connection exists or whether login and synchronisation have actually been completed.
Main Window Overview
The main window consists of several areas:
Status Bar and Indicators
The status bar is located at the top of the main window next to the menu.
The permanently visible LINK indicator shows the actual state of the ON4KST connection:
| Indicator | Meaning |
|---|---|
green LINK |
Login and synchronisation of all configured chat categories have been completed |
yellow LINK… |
Connection, login, user-list synchronisation or controlled shutdown is in progress |
red LINK! |
No connection exists, or KST4Contest is waiting before an automatic reconnect |
The tooltip contains the internal connection state and a more detailed description of the current step. The indicator is not a button.
KST4Contest reports ONLINE only after login has been confirmed and the user lists of all configured categories have been received. The send field and TX remain disabled while the connection is still being established or resynchronised.
Additional indicators appear temporarily after certain events:
SKEDindicates that a sked reminder is due. The text contains the complete target callsign and the remaining time.BAND+appears after a log entry if at least one common, locally enabled and unworked band has been detected for the worked station.
Both indicators flash for approximately twelve seconds and then disappear. Their tooltip contains the complete message or derivation. Neither indicator is clickable.
PM Window (top left)
The PM window shows private messages addressed to the local login callsign and the corresponding outgoing replies.
Messages not sent by the local station are also shown when their text contains the configured local login callsign, ignoring letter case. This applies to public messages addressed to ALL and to directed messages between other chat participants. The informal description “gossip detection” is particularly apt for the latter case.
The actual receiver, message text, chat category and routing remain unchanged. The message merely gains an additional representation in the PM window.
If QSO Monitoring is enabled, it additionally shows captured messages involving the monitored base callsigns. These entries receive a Sniffed: prefix containing the complete visible sender and receiver callsigns.
New rows not sent by the local station pass through six green age levels and return to the normal table colour after five minutes. Messages sent by the local station retain their separate highlight. The colour only indicates message age; it does not change content or routing.
Selecting an incoming row prepares a reply to the sender. For an outgoing message from the local station, the original receiver is restored as the message target instead. Caught and monitored rows do not trigger PM audio output.
Age levels: Coloured PM Rows. Recognition and limitations: PM Catching.
User List (Chat Members)
The central table of all currently active chat users. Columns (depending on configuration):
| Column | Content |
|---|---|
| Callsign | Station callsign |
| Name | Name and additional information from the chat name field |
| QRA | Maidenhead locator |
| QRB | Distance in km |
| QTF | Direction in degrees |
| QRG | Most recent frequency detected in a chat message |
| Tropo | Result of the band-specific tropo or path assessment |
| Score | Current, numerically sortable priority score of the normalised base callsign |
| Act | Minutes since the most recent activity |
| AP | AirScout aircraft data, when enabled |
| worked | Per-band Worked, band-opportunity and grid-square status, plus wkdany |
| NOT QRV @ | Bands on which the station has manually been marked not QRV |
| Category | Chat category of this entry |
The QRG column shows the frequency most recently detected for a station. Missing trailing zeros are added for display purposes, so 144.21, for example, is shown as 144.210. If KST4Contest detects frequencies on several bands in succession, the column shows the latest match. The internal band information may still contain several current bands for that station.
Relative frequency information is first combined with a band context from the same sender which is no more than 30 minutes old. Only if no such context exists does KST4Contest use the global fallback band. Detection rules, examples and limitations: QRG Detection.
Worked, band and grid-square status
The subcolumns under worked use compact codes because several enabled bands leave little room for full descriptions. X marks a callsign worked on that band. a and B+ identify an offered band which has not yet been worked. An appended o means that the four-character grid square has already been worked on this band.
The wkdany subcolumn is band-independent: x means that the callsign has been worked, o means that the grid square has been worked on any band, and xo means both.
Each status cell has a tooltip containing the legend and the state derived for that station. For the complete calculation, including NOT-QRV precedence, see Worked Callsigns, New Bands and New Grid Squares.
Sorting: Click column headers. QRB sorting is numerical (corrected in v1.22).
A callsign displayed in green and bold indicates a directional opportunity derived from a directed message. The marker applies to the sender of that message and remains visible for no more than five minutes. Derivation and limitations: Directional Opportunities from Directed Messages.
Send Field
The send field contains the prepared text for the next outgoing message.
When an operator deliberately selects a station in the user list using the mouse or keyboard, KST4Contest prepares a directed message:
/cq CALLSIGN
The complete visible callsign, including any suffix, and the chat category of the selected station are retained. A target such as 9A0BB-70 is not shortened to 9A0BB.
A background refresh, changed sorting order or filter update must not overwrite message text which has already been edited. Only an actual station selection by the operator prepares the /cq recipient again.
- TX or
Entersends the prepared text. Escclears the send field.- The send field and TX remain disabled until KST4Contest is fully connected to ON4KST.
Shortcuts, snippets and variables are described under Macros and Variables.
MYQRG and SECONDQRG Fields
The two QRG fields contain the local frequencies for the primary and secondary chat categories.
MYQRG can be updated by an enabled TRX synchronisation interface or entered manually when no automatic QRG source is active. SECONDQRG remains independent and contains the frequency used for the second category.
Selecting a station from the second chat does not change the meaning of these values: MYQRG continues to belong to the primary category and SECONDQRG to the secondary category.
Further details: TRX Sync Settings.
MYQTF Field
The MYQTF field shows the current antenna direction as a numerical angle in degrees.
If PSTRotator is enabled, the value is received automatically and the field cannot be edited manually. Without active rotator synchronisation, the antenna direction can be entered directly. The changed value is applied when the field loses focus.
The value affects, among other things:
- QTF filtering,
- the antenna-sector display on the station map,
- priority-score calculation,
- the AP timeline, and
- the
MYQTFvariable.
Table Widths and Truncated Cell Values
When useful data first becomes available, KST4Contest sizes the columns of the user list, message views, DXCluster and QSO tables, and Worked database once from their headings and existing contents. Stored widths take precedence. The initial widths of Name, AP and NOT QRV @ are capped so that one long value cannot displace the rest of the table. Message and similar free-text columns remain flexible and do not follow the longest message.
Manually changed column widths are saved automatically and restored at the next start. Later messages or station updates do not overwrite that choice.
If a normal text value does not fit in its cell, a tooltip shows the complete value. It appears only when the displayed text is actually truncated. Functional tooltips for QRA, Worked, band and similar states remain available. If such a cell is also truncated, the tooltip contains both the full value and the functional explanation.
Message Text and Links
KST4Contest deliberately displays message text on a single line. This keeps a larger number of entries visible when chat activity is high. The disadvantage is obvious: if the Message column is narrow, not every message fits completely into its cell.
If the message text is wider than the visible cell, moving the mouse over that Message cell displays the complete content in a tooltip. No additional full-text tooltip is shown if the message already fits into the column.
Web addresses beginning with http://, https:// or www. are displayed as links inside the message text. Clicking a link opens it in the operating system’s default browser. Other protocols are not treated as links.
This avoids having to move the divider merely to read an individual long message. The divider can, of course, still be adjusted if a permanently wider message area is required.
Filters and Reachability Controls
The filter bar is located above the chat-member table. Filters can be combined; a station remains visible only if it satisfies every active condition.
Station Filters
| Control | Effect |
|---|---|
| Show only QTF | Shows only stations inside the selected antenna direction and configured beamwidth |
| Show only QRB [km] <= | Limits the list to the entered maximum distance |
| Find | Filters by a complete or partial callsign |
| wkd | Hides base callsigns already worked on at least one supported band |
| individual band buttons | Hide stations already worked on that band or marked NOT QRV there |
| Inactive stations | Hides stations whose latest chat activity was more than 20 minutes ago |
| Only new grids | Shows only stations in four-character grid squares not yet worked on any band |
| New bands | Shows stations with at least one detected, locally enabled and unworked band opportunity |
| Tropo >=0dB | Shows stations with a calculated non-negative SSB margin |
| AS next 5m | Shows stations with a current AirScout window or one expected within the next five minutes |
For New bands, KST4Contest evaluates current QRGs, band information in the name field and active callsign variants together. Manual NOT-QRV marks take precedence.
The Tropo >=0dB filter removes only stations for which a completed calculation returned a negative margin. Stations with pending or failed calculations remain visible. Otherwise, a missing API result would incorrectly be treated as proof that the path is unsuitable.
Grid Color
Grid color is not a filter. It only changes the presentation of the QRA cell and marks four-character grid squares which have already been worked.
The station remains visible regardless of this colour marker. Reset filters therefore does not disable Grid color.
Reachability and Calc Selected
The Reachability dropdown selects the band used by the Tropo column, the Tropo filter and an explicitly requested path calculation.
- Auto derives the band from the station’s current QRG, band information in its name field and the supported chat category.
- An explicitly selected band overrides this automatic choice for the Reachability calculation.
Changing the dropdown does not start a calculation for the entire user list. With an online elevation-data source, that would be unnecessarily slow and multiply the number of external API requests.
Calc selected calculates only the currently selected station, using either the explicitly selected or automatically derived band. The result is then used by the Tropo column and the associated views.
Resetting the Filters
Reset filters clears:
- the QTF filter,
- the QRB filter,
- the callsign search field,
- all Worked and band filters,
- Inactive stations,
- Only new grids,
- New bands,
- Tropo >=0dB, and
- AS next 5m.
The internal filter predicates are explicitly cleared as well. Resetting only the visible toggle buttons would not be sufficient.
The following settings are retained:
- Grid color, because it is a display option, and
- the Reachability selection, because it selects the calculation band rather than directly filtering the table.
Behaviour in a Narrow View
The filter bar has no fixed width. QTF, Worked and Reachability controls initially use the available space in their respective rows.
When the middle divider is moved to the right and the chat-member area becomes narrower, controls wrap only when their actual required width no longer fits. Widening the area causes them to rearrange immediately.
In plain terms: the filters determine the table contents, but no longer enforce the minimum width of the entire right-hand side.
Station Info Panel (Further Info)
The lower-right panel combines the messages associated with the selected station. This includes public messages, private messages to the local station and, where visible in the chat, private messages addressed to other stations.
The selected filter controls which of these messages are displayed. Under Settings → GUI, the default filter can be set to:
- all messages,
- private messages to the local station,
- private messages to other stations, or
- public messages.
This setting changes the Further Info display only. Messages are neither discarded nor removed from the other message tables, and the filter can be changed at any time for the currently selected station.
The lower part of the panel contains per-band Not QRV marks for the selected station. Individual controls are shown for the bands enabled in the local station settings. tag not qrv all sets or removes the mark for every supported band, including bands which are not currently visible.
The change immediately affects the NOT QRV @ column, band opportunities and the corresponding filters. It is stored in the internal database and restored after a restart.
The current Priority score of the selected station is displayed in the same section.
Sked fail marks an unsuccessful attempt and strongly reduces the score of the normalised base callsign. Reset fail removes the mark. It applies to all active suffix and category variants of the station and remains active for the current program session.
The controls underneath are used to create a sked:
| Control | Meaning |
|---|---|
| Sked in | Time remaining until the sked |
| Band | Agreed band selected from the locally enabled bands |
| Mode | SSB or CW for a possible Win-Test handover |
| Create sked | Create the internal sked |
| Remind-PM in | Enable automatic reminder PMs |
| 2+1, 5+2+1, 10+5+2+1 | Times at which reminder PMs are sent before the sked |
The proposed band is derived from recent QRG and name information for the station. It can be changed explicitly before creating the sked. The mode selection only affects the Win-Test handover; the internal sked and reminder PMs work independently.
Create sked always creates the appointment inside KST4Contest first. If the Win-Test network listener is active, KST4Contest then attempts an additional handover to Win-Test. If no QRG matching the selected band can be found or Win-Test cannot be reached, the internal sked, its priority contribution and any scheduled reminders remain intact.
The complete derivation and limitations are described under Skeds and Sked Reminders.
Priority List
The compact priority bar is located on the right-hand side between the user list and the Further Info section. It displays the two currently highest-ranked candidates directly in the main window:
Priority: 1 CALLSIGN SCORE 2 CALLSIGN SCORE more
Clicking either candidate selects the corresponding active chat member. The complete callsign, including its suffix and chat category, is used.
The more button opens a separate window containing up to 15 candidates. The list is sorted by descending score. Double-clicking an entry selects the candidate and closes the window.
Stations with a score of 0 are not included in the priority list. They remain visible in the user list so that the reason for their exclusion can be examined and, for example, an incorrect NOT-QRV mark can be changed.
The score is calculated for the normalised base callsign. Several active variants such as 9A0BB-2 and 9A0BB-70 may therefore display the same value in the user list. They nevertheless remain separate message targets.
New messages, AirScout data, skeds and status changes request a new calculation. A periodic refresh also runs in the background. A briefly outdated order is therefore not an error.
Calculation and limitations: Priority Score and Priority List.
Station Map
The station map can be opened in two ways:
- Windows → Show / hide station map opens or closes the map window.
- Show on map in the Further Info panel opens the map and focuses the selected station.
The map uses the stations which remain visible after applying the current user-list filters. Its header shows the number of displayed stations and indicates a filtered view with filtered view active.
Selecting a Station
A single station marker can be selected directly. KST4Contest then:
- selects the corresponding chat member,
- scrolls the main user list to that entry,
- updates the Further Info panel, and
- prepares the complete visible callsign as the
/cqrecipient.
Chat logins with the same normalised base callsign and position may share one marker. They nevertheless remain separate message targets inside KST4Contest.
When Group nearby stations is selected, markers which are too close together at lower zoom levels are displayed as a cluster containing the number of stations. Clicking the cluster zooms into that area. A concrete station is selected only after an individual marker becomes visible and is clicked. Clearing the checkbox displays every positionable station as an individual marker at every zoom level.
The change takes effect immediately without changing the current zoom, viewport or station selection. It is saved automatically and restored at the next programme start. If no value has been stored yet, Group nearby stations remains selected so existing installations retain the previous behaviour.
This switch controls only the spatial clusters on screen. Active chat variants of the same normalised base callsign may still share one geographical marker and remain separate message targets regardless of this setting.
For a selected station, the header additionally shows:
- the complete callsign,
- locator,
- QRB and QTF,
- detected active bands,
- any available
B+band opportunity, and - the most recently known QRGs.
Long header content is shortened. The complete text remains available in its tooltip.
Clearing the Selection with Reset View
Reset view clears the selected station without changing the map position or zoom level.
It:
- clears the selected station,
- clears the selection in the main user list,
- removes the connection line to the remote station,
- discards a pending analysis for the previous station, and
- removes the right-hand analysis panel.
The map itself remains at the previously selected position and zoom level. This function is therefore not a geographical reset to the local station.
Selecting another individual marker restores the station selection and analysis panel.
Triggering a DX Cluster Spot
Trigger cluster spot is visible only while a station is selected. It sends one spot to logging programmes connected to the built-in local DX Cluster server.
This requires:
- the local DX Cluster server to be enabled,
- at least one connected cluster client, and
- a usable QRG for the selected station.
The spot is not sent to a public Internet cluster.
Path Analysis
The terrain profile is displayed below the map. The right-hand analysis panel includes, among other things:
- the data source and number of elevation samples,
- the analysis frequency,
- the Earth-curvature or refraction model,
- radio and terrain horizons,
- Fresnel-zone clearance,
- detected obstructions,
- the link budget,
- estimated received power, and
- a summarised path assessment.
The analysis uses the same centrally derived band as the Reachability functions. A band explicitly selected in the Reachability dropdown is taken into account.
These values remain technical estimates. Buildings, vegetation, local obstructions, current propagation conditions and unknown station parameters may substantially change the real result.
Hiding the Path Analysis
Hide path analysis hides both the terrain profile and the right-hand analysis panel, leaving more space for the map.
The Path analysis is hidden message and Show path analysis button remain visible, so the function can be restored directly.
If no station is selected when the analysis is shown again, no empty right-hand panel is displayed. It is recreated only after a specific station has been selected.
The setting is stored and restored at the next programme start.
The divider between the map and detail panel can be moved horizontally. Longer values wrap in a narrow detail panel; a vertical scrollbar appears if the available height is insufficient.
Detailed derivation and limitations: Station Map and Path Analysis.
Global Message Tabs and Monitor Window
The lower part of the main window contains three global message tabs. Their contents do not depend on the station currently selected in the user list.
| Tab | Content |
|---|---|
| Public messages | Public chat messages, CQ calls and beacons |
| DXCluster messages | DX cluster messages received through ON4KST |
| QSO of the other | Directed messages between two other stations |
In QSO of the other, sender and receiver are displayed separately. Last QRG TX and Last QRG RX contain the frequencies most recently known for the two stations. They do not necessarily represent the frequency discussed in the displayed conversation.
wkd TX? and wkd RX? show the global Worked state of the two base callsigns. These values are not band-specific.
The DXCluster messages tab shows the reporting and reported stations, their locators, QRG, message text and the global Worked state of the reported station. Which fields are actually available depends on the message received from the ON4KST server.
Message text remains on one line. If a cell is too narrow, its complete content is available in a tooltip. Web addresses in the message text are clickable.
Separate Monitor Window
KST4Contest additionally opens the Cluster & QSO of the other window. It shows DX cluster messages in the upper table and directed messages between other stations in the lower table.
The vertical divider position and window size are saved automatically. The DXCluster and QSO tables use their own column widths in this window, so changing the monitor layout does not alter the corresponding main-window tabs.
The window can be hidden and restored through:
Windows → Hide cluster / stranger QSOs
Windows → Show cluster / stranger QSOs
The main-window tabs and separate monitor window use the same underlying data. Hiding the monitor window therefore neither stops message processing nor removes messages from the tabs.
Derivation and limitations: Global Message Views.
Menu
File
- Connect to … starts the connection using the settings already applied in KST4Contest.
- Disconnect terminates the current ON4KST connection without closing KST4Contest.
- Exit + disconnect terminates the connection and then closes the programme.
The Connect and Disconnect entries are enabled or disabled according to the current connection state.
Options
- Set QRG as name in Chat (main category) sends
/SETNAMEcontaining the currentMYQRGto the primary chat category. - Show me as away in chat sends
/AWAY. - Show me as active in chat sends
/BACK. - Show options shows or hides the settings window.
Functions which communicate with the server are available only after the ON4KST connection has been established completely.
Windows
- Hide cluster / stranger QSOs and Show cluster / stranger QSOs hide or restore the separate cluster and QSO monitor window.
- hide options and show options hide or restore the settings window.
- Use dark mode design activates the dark colour scheme for the running session.
- Use default mode design restores the standard light colour scheme for the running session. The startup colour scheme is set per profile on the GUI settings tab under Design.
- Show / hide station map opens or closes the separate station-map and path-analysis window.
Window Sizes and Dividers
KST4Contest automatically stores programme-window sizes and positions, relevant dividers and manually changed table-column widths in the configuration file after a short delay. Any pending layout update is written when the programme exits. Save Settings is not required for these changes, but still stores the complete current state, including the layout.
The main window is additionally checked against the visible area of the primary screen during startup. If the stored size is too large, KST4Contest reduces and moves the window so that it remains accessible. The complete process is described under Screen-Aware Main Window Sizing.
The other programme windows do not currently use this additional size restriction. If, for example, the separate monitor window appears too large after moving to a smaller screen, correcting it manually is sufficient; the new size is saved automatically.
If the layout has become inconvenient, first move the dividers and column widths back to usable positions. Deleting the configuration file also resets the UI values, but it removes the other stored programme settings as well. It should therefore be used only when the interface cannot be restored in another way.
Operating Tips
- Keep the settings window open: This provides quick access to the beacon controls.
- Right-click in the user list: Opens the snippet menu and additional actions, including QRZ.com profiles and NOT-QRV marks.
- Press Enter while working in the chat: If the send field contains text, Enter sends it directly even when another control has focus.
- Stop the beacon while scanning: Disable the beacon while moving through frequencies to avoid flooding the chat with unnecessary messages.











