feat(dvk): twelve slots; perf: Settings pauses the heavy streams

The voice keyer grows to F1-F12 — the UI was already data-driven, so the
count constant, the F-key range and the labels are the whole change.

And the preferences stop stuttering on a busy station: every spot batch,
decode batch and CAT snapshot re-rendered the entire App tree behind the
dialog — cluster grid, decodes panel, thousands of nodes — and the pointer
janked over the very panel the operator was trying to use. While Settings is
open the flushes park their batches in the pending refs (bounded) and CAT
repaints at most every two seconds; closing the dialog drains everything.

app.go

@@ -10239,7 +10239,7 @@ func titleEntity(s string) string {
 // the configured "Recording mic", transmit via "To Radio", preview via
 // "Listening".
 
-const dvkSlots = 6
+const dvkSlots = 12
 
 // DVKMessage is one voice-keyer slot for the UI.
 type DVKMessage struct {

changelog.json

@@ -4,11 +4,15 @@
     "date": "",
     "en": [
       "KPA500: the amplifier no longer switches itself off and commands respond instantly. A command this model does not know (the KPA1500’s ATU poll) was tearing the link down every cycle, and each reconnect toggled the serial control lines — which are the KPA500’s power switch. The lines are now held steady, silence is not treated as a dead link, and the baud is picked from a list.",
-      "FT decodes: within a period, decodes are listed in arrival order — mirroring the decoder’s own window — instead of strongest-first."
+      "FT decodes: within a period, decodes are listed in arrival order — mirroring the decoder’s own window — instead of strongest-first.",
+      "Voice keyer: twelve message slots (F1–F12) instead of six.",
+      "Preferences open smoothly on a busy station: while the dialog is open, cluster spots, FT decodes and CAT snapshots queue quietly instead of repainting the whole window behind it — everything catches up the moment it closes."
     ],
     "fr": [
       "KPA500 : l’ampli ne s’éteint plus tout seul et les commandes répondent instantanément. Une commande inconnue de ce modèle (le poll ATU du KPA1500) détruisait le lien à chaque cycle, et chaque reconnexion basculait les lignes de contrôle série — qui sont l’interrupteur du KPA500. Les lignes sont désormais tenues stables, le silence n’est plus traité comme un lien mort, et le baud se choisit dans une liste.",
-      "FT decodes : dans une période, les décodages sont listés dans l’ordre d’arrivée — comme la fenêtre du décodeur — au lieu du plus fort d’abord."
+      "FT decodes : dans une période, les décodages sont listés dans l’ordre d’arrivée — comme la fenêtre du décodeur — au lieu du plus fort d’abord.",
+      "Manipulateur vocal : douze messages (F1–F12) au lieu de six.",
+      "Les Préférences restent fluides sur une station chargée : dialogue ouvert, les spots cluster, les décodages FT et les instantanés CAT patientent en file au lieu de repeindre toute la fenêtre derrière — tout se rattrape à la fermeture."
     ]
   },
   {

frontend/src/App.tsx

@@ -2228,6 +2228,15 @@ export default function App() {
   const [bulkEditIds, setBulkEditIds] = useState<number[]>([]);
   const [bulkEditOpen, setBulkEditOpen] = useState(false);
   const [showSettings, setShowSettings] = useState(false);
+  // While the Settings dialog is open, the spot/decode flushes and the CAT
+  // snapshot stream are PAUSED (data keeps accumulating in the pending refs).
+  // Every flush re-renders the whole App tree behind the dialog — cluster
+  // grid, decodes panel, thousands of nodes — and with a busy cluster plus
+  // two decoders the pointer visibly stuttered over the preferences.
+  const showSettingsRef = useRef(false);
+  useEffect(() => { showSettingsRef.current = showSettings; }, [showSettings]);
+  const flushSpotsRef = useRef<() => void>(() => {});
+  const flushDecodesRef = useRef<() => void>(() => {});
   // Re-read the "beam on map" toggle when Preferences closes (it's edited there).
   useEffect(() => { if (!showSettings) setShowBeamOnMap(localStorage.getItem('opslog.showBeamOnMap') !== '0'); }, [showSettings]);
   useEffect(() => { if (!showSettings) setRotorCompact(localStorage.getItem('opslog.rotorCompact') === '1'); }, [showSettings]);
@@ -3435,7 +3444,15 @@ export default function App() {
   // Apply a CAT snapshot to the entry strip (freq/band/mode), unless the user
   // just typed something (freeze window) or locked a field. Shared by the live
   // cat:state event and the startup poll below.
+  const lastCatWhileSettingsRef = useRef(0);
   function applyCatState(s: CATState) {
+    // Behind the Settings dialog nobody reads a frequency four times a second;
+    // each snapshot re-renders the whole App tree under the pointer.
+    if (showSettingsRef.current) {
+      const now = Date.now();
+      if (now - lastCatWhileSettingsRef.current < 2000) return;
+      lastCatWhileSettingsRef.current = now;
+    }
     setCatState(s);
     if (!s?.connected) return;
     // A snapshot arriving during the freeze used to be DROPPED, and that lost the
@@ -3580,11 +3597,19 @@ export default function App() {
     // Commit the staged spots: resolve the status for any slot we don't know yet
     // FIRST, then insert the rows — so they appear with the right badge already
     // painted instead of flashing plain text then flipping to a pill.
+    // eslint-disable-next-line prefer-const
     const flushPendingSpots = async () => {
       pendingSpotTimer.current = undefined;
+      // Settings open: leave everything queued (bounded) and repaint nothing.
+      if (showSettingsRef.current) {
+        const cap = spotsCapRef.current;
+        if (pendingSpotsRef.current.length > cap) pendingSpotsRef.current = pendingSpotsRef.current.slice(-cap);
+        return;
+      }
       const batch = pendingSpotsRef.current;
       pendingSpotsRef.current = [];
       if (batch.length === 0) return;
+      // (registered below so closing Settings can drain the queue)
       // Resolve unknown statuses before the rows go in.
       try {
         const known = spotStatusRef.current;
@@ -3640,6 +3665,7 @@ export default function App() {
         return next.length > cap ? next.slice(0, cap) : next;
       });
     };
+    flushSpotsRef.current = () => { void flushPendingSpots(); };
     const unsubSpot = EventsOn('cluster:spot', (sp: ClusterSpot) => {
       // Stage the spot; a short timer resolves its status then commits it.
       pendingSpotsRef.current.push(sp);
@@ -3687,6 +3713,10 @@ export default function App() {
     // decodes panel and plain worked in the cluster list two seconds later.
     const flushDecodes = async () => {
       pendingDecodeTimer.current = undefined;
+      if (showSettingsRef.current) {
+        if (pendingDecodesRef.current.length > 3000) pendingDecodesRef.current = pendingDecodesRef.current.slice(-3000);
+        return;
+      }
       const batch = pendingDecodesRef.current;
       pendingDecodesRef.current = [];
       if (batch.length === 0) return;
@@ -3729,6 +3759,7 @@ export default function App() {
         return next;
       });
     };
+    flushDecodesRef.current = () => { void flushDecodes(); };
 
     const unsubDecode = EventsOn('udp:decode', (d: DecodeRow) => {
       pendingDecodesRef.current.push(d);
@@ -4375,6 +4406,10 @@ export default function App() {
   // The stable wrapper the dialog actually receives.
   const openQSOFromSettings = useCallback((id: number) => openEditRef.current(id), []);
   const closeSettings = useCallback(() => {
+    // Synchronously: the ref effect runs after the next render, and flushing
+    // through a still-true ref would hit the pause gate again.
+    showSettingsRef.current = false;
+    window.setTimeout(() => { flushSpotsRef.current(); flushDecodesRef.current(); }, 50);
     setShowSettings(false);
     setSettingsSection(undefined);
     refreshChaseNew();
@@ -5203,7 +5238,7 @@ export default function App() {
         if (dvkActiveRef.current) {
           // Voice keyer: plain F1..F6 transmit the message; Ctrl+F1..F5 → tabs.
           if (mod && n <= 5) { e.preventDefault(); setDetailTab(TABS[n - 1]); return; }
-          if (plain && n <= 6) { e.preventDefault(); dvkPlayRef.current(n); return; }
+          if (plain && n <= 12) { e.preventDefault(); dvkPlayRef.current(n); return; }
           return;
         }
         // No keyer: plain F1..F5 switch the detail tab (labels read "F1…").

frontend/src/components/DvkPanel.tsx

@@ -19,7 +19,7 @@ type Props = {
   phoneOk: boolean; // false when the rig is on a non-phone mode → DVK TX blocked
 };
 
-// Operating panel for the Digital Voice Keyer — transmits the recorded F1–F6
+// Operating panel for the Digital Voice Keyer — transmits the recorded F1–F12
 // voice messages to the rig ("To Radio"). Mirrors the WinKeyer panel's slot in
 // the reserved area. Recording/labeling lives in Settings → Audio.
 export function DvkPanel({ messages, status, onPlay, onStop, onClose, autoCq, autoCqSecs, onToggleAutoCq, onSetAutoCqSecs, phoneOk }: Props) {

frontend/src/lib/i18n.tsx

@@ -449,7 +449,7 @@ const en: Dict = {
   'wkp.cwSpeed': 'CW speed (WPM)', 'wkp.faster': 'Faster', 'wkp.slower': 'Slower', 'wkp.cwText': 'CW text', 'wkp.sendOnTypeHint': 'Key each character live as you type (backspace removes un-sent chars)', 'wkp.sendOnType': 'send on type', 'wkp.phLive': 'Type — sent live…', 'wkp.phEnter': 'Type and press Enter to send…', 'wkp.clear': 'Clear', 'wkp.send': 'Send', 'wkp.abort': 'Abort (clear keyer buffer)', 'wkp.stop': 'Stop',
   'wkp.breakIn': 'Break-in', 'wkp.breakInHint': "The rig's CW keyer only transmits when break-in is SEMI or FULL. OFF keys the sidetone but stays in receive.", 'wkp.bkOff': 'OFF', 'wkp.bkOffWarn': "won't transmit — set SEMI or FULL",
   'wkp.autoCallHint': 'Click a CQ macro (one whose text contains CQ) to resend it on a loop — message, gap, repeat — until you send another macro (e.g. a report), press Stop, or hit ESC. Non-CQ macros send once.', 'wkp.autoCall': 'Auto-call', 'wkp.gap': 'gap', 'wkp.gapHint': 'Seconds to wait after the message before resending', 'wkp.loopHint': 'click a CQ macro to loop it', 'wkp.macroN': 'Macro {n}',
-  'dvkp.voiceKeyer': 'Voice keyer', 'dvkp.autoCq': 'Auto CQ', 'dvkp.autoCqHint': 'Repeat a CQ-labelled message on a timer until you stop it or play another slot', 'dvkp.gap': 'Gap', 'dvkp.notPhone': 'The voice keyer only transmits on a phone mode (SSB/AM/FM)', 'dvkp.stop': 'Stop', 'dvkp.disable': 'Disable voice keyer', 'dvkp.noMsgPre': 'No messages recorded yet. Open', 'dvkp.settingsPath': 'Settings → Audio devices & voice keyer', 'dvkp.noMsgPost': 'to record F1–F6.', 'dvkp.transmit': 'Transmit F{slot}{label} ({dur}s)', 'dvkp.empty': 'F{slot} — empty', 'dvkp.message': 'message',
+  'dvkp.voiceKeyer': 'Voice keyer', 'dvkp.autoCq': 'Auto CQ', 'dvkp.autoCqHint': 'Repeat a CQ-labelled message on a timer until you stop it or play another slot', 'dvkp.gap': 'Gap', 'dvkp.notPhone': 'The voice keyer only transmits on a phone mode (SSB/AM/FM)', 'dvkp.stop': 'Stop', 'dvkp.disable': 'Disable voice keyer', 'dvkp.noMsgPre': 'No messages recorded yet. Open', 'dvkp.settingsPath': 'Settings → Audio devices & voice keyer', 'dvkp.noMsgPost': 'to record F1–F12.', 'dvkp.transmit': 'Transmit F{slot}{label} ({dur}s)', 'dvkp.empty': 'F{slot} — empty', 'dvkp.message': 'message',
   'agp.portDeselect': 'Port {letter} — click to deselect', 'agp.portSelect': 'Select on port {letter}', 'agp.online': 'online', 'agp.offline': 'offline', 'agp.close': 'Close', 'agp.connecting': 'Connecting…', 'agp.noAntennas': 'No antennas configured.', 'agp.filterOnHint': 'Showing antennas for {band} only — click to show all bands', 'agp.filterOffHint': 'Showing all antennas — click to show only the current band',
   'ampw.title': 'Amplifier', 'ampw.all': 'All amplifiers', 'ampw.pick': 'Which amplifier the widget shows',
   'ampw.showHint': 'Amplifier · click to show', 'ampw.hideHint': 'Amplifier — shown · click to hide',
@@ -535,7 +535,7 @@ const en: Dict = {
   'aud.preroll': 'Pre-roll (seconds)', 'aud.format': 'File format', 'aud.wav': 'WAV (lossless, larger)', 'aud.mp3': 'MP3 (compressed, small)',
   'aud.fromLevel': 'From Radio level', 'aud.txLevel': 'Voice keyer level', 'aud.txLevelHint': 'Level of the recorded messages sent to the radio. Raise it if your voice keyer is much quieter than your microphone; Play previews at this same level. If the radio transmits almost nothing, its modulation source is still the front microphone: on an FTDX10 set MENU → SSB MOD SOURCE to REAR (the USB input).', 'aud.micLevel': 'Mic level', 'aud.qsoPlayLevel': 'QSO playback level', 'aud.levelHint': 'If your voice is louder than the station, lower Mic level.',
   'aud.autoSend': 'Auto-send the recording to the station by e-mail when I log a QSO',
-  'aud.dvkTitle': 'Voice keyer messages (F1–F6)', 'aud.pttMethod': 'PTT method', 'aud.pttNone': 'None (VOX)', 'aud.pttCat': 'CAT (the radio link)', 'aud.pttRts': 'Serial RTS', 'aud.pttDtr': 'Serial DTR',
+  'aud.dvkTitle': 'Voice keyer messages (F1–F12)', 'aud.pttMethod': 'PTT method', 'aud.pttNone': 'None (VOX)', 'aud.pttCat': 'CAT (the radio link)', 'aud.pttRts': 'Serial RTS', 'aud.pttDtr': 'Serial DTR',
   'aud.testPtt': 'Test PTT', 'aud.pttPort': 'PTT COM port', 'aud.pickPort': 'Pick a COM port', 'aud.selectPort': '— select —', 'aud.refresh': 'Refresh',
   'aud.msgPlaceholder': 'Message {n} label (CQ, report, 73…)', 'aud.holdRec': '● Hold to rec', 'aud.recordingNow': '● Recording…', 'aud.play': '▶ Play', 'aud.stop': '■ Stop',
   'aud.errPttTest': 'PTT test: ', 'aud.errRecord': 'Record: ', 'aud.errSave': 'Save: ', 'aud.errPlay': 'Play: ',
@@ -955,7 +955,7 @@ const fr: Dict = {
   'wkp.cwSpeed': 'Vitesse CW (WPM)', 'wkp.faster': 'Plus rapide', 'wkp.slower': 'Plus lent', 'wkp.cwText': 'Texte CW', 'wkp.sendOnTypeHint': 'Manipule chaque caractère en direct à la frappe (retour arrière supprime les caractères non émis)', 'wkp.sendOnType': 'émission à la frappe', 'wkp.phLive': 'Tape — émis en direct…', 'wkp.phEnter': 'Tape et appuie sur Entrée pour émettre…', 'wkp.clear': 'Effacer', 'wkp.send': 'Émettre', 'wkp.abort': 'Interrompre (vider le tampon du manipulateur)', 'wkp.stop': 'Stop',
   'wkp.breakIn': 'Break-in', 'wkp.breakInHint': "Le manipulateur interne de la radio n'émet que si le break-in est SEMI ou FULL. OFF génère la tonalité mais reste en réception.", 'wkp.bkOff': 'OFF', 'wkp.bkOffWarn': "n'émettra pas — mettre SEMI ou FULL",
   'wkp.autoCallHint': "Clique une macro CQ (dont le texte contient CQ) pour la réémettre en boucle — message, pause, répétition — jusqu'à envoyer une autre macro (ex. un report), appuyer sur Stop ou ESC. Les macros non-CQ ne sont émises qu'une fois.", 'wkp.autoCall': 'Appel auto', 'wkp.gap': 'pause', 'wkp.gapHint': 'Secondes à attendre après le message avant de réémettre', 'wkp.loopHint': 'clique une macro CQ pour la boucler', 'wkp.macroN': 'Macro {n}',
-  'dvkp.voiceKeyer': 'Manipulateur vocal', 'dvkp.autoCq': 'Auto CQ', 'dvkp.autoCqHint': 'Répète un message libellé CQ à intervalle régulier jusqu\'à l\'arrêt ou la lecture d\'un autre slot', 'dvkp.gap': 'Intervalle', 'dvkp.notPhone': 'Le manipulateur vocal n\'émet qu\'en mode phonie (SSB/AM/FM)', 'dvkp.stop': 'Stop', 'dvkp.disable': 'Désactiver le manipulateur vocal', 'dvkp.noMsgPre': 'Aucun message enregistré. Ouvre', 'dvkp.settingsPath': 'Réglages → Périphériques audio & manipulateur vocal', 'dvkp.noMsgPost': 'pour enregistrer F1–F6.', 'dvkp.transmit': 'Émettre F{slot}{label} ({dur}s)', 'dvkp.empty': 'F{slot} — vide', 'dvkp.message': 'message',
+  'dvkp.voiceKeyer': 'Manipulateur vocal', 'dvkp.autoCq': 'Auto CQ', 'dvkp.autoCqHint': 'Répète un message libellé CQ à intervalle régulier jusqu\'à l\'arrêt ou la lecture d\'un autre slot', 'dvkp.gap': 'Intervalle', 'dvkp.notPhone': 'Le manipulateur vocal n\'émet qu\'en mode phonie (SSB/AM/FM)', 'dvkp.stop': 'Stop', 'dvkp.disable': 'Désactiver le manipulateur vocal', 'dvkp.noMsgPre': 'Aucun message enregistré. Ouvre', 'dvkp.settingsPath': 'Réglages → Périphériques audio & manipulateur vocal', 'dvkp.noMsgPost': 'pour enregistrer F1–F12.', 'dvkp.transmit': 'Émettre F{slot}{label} ({dur}s)', 'dvkp.empty': 'F{slot} — vide', 'dvkp.message': 'message',
   'agp.portDeselect': 'Port {letter} — clic pour désélectionner', 'agp.portSelect': 'Sélectionner sur le port {letter}', 'agp.online': 'en ligne', 'agp.offline': 'hors ligne', 'agp.close': 'Fermer', 'agp.connecting': 'Connexion…', 'agp.noAntennas': 'Aucune antenne configurée.', 'agp.filterOnHint': 'Antennes du {band} uniquement — clic pour afficher toutes les bandes', 'agp.filterOffHint': 'Toutes les antennes affichées — clic pour n’afficher que la bande courante',
   'ampw.title': 'Amplificateur', 'ampw.all': 'Tous les amplis', 'ampw.pick': 'Ampli affiché par le widget',
   'ampw.showHint': 'Amplificateur · cliquer pour afficher', 'ampw.hideHint': 'Amplificateur — affiché · cliquer pour masquer',
@@ -1037,7 +1037,7 @@ const fr: Dict = {
   'aud.preroll': 'Pré-enregistrement (secondes)', 'aud.format': 'Format de fichier', 'aud.wav': 'WAV (sans perte, plus volumineux)', 'aud.mp3': 'MP3 (compressé, léger)',
   'aud.fromLevel': 'Niveau depuis la radio', 'aud.txLevel': 'Niveau du voice keyer', 'aud.txLevelHint': "Niveau des messages enregistrés envoyés à la radio. Augmentez-le si votre voice keyer est bien plus faible que votre micro ; Lire fait entendre ce même niveau. Si la radio n'émet presque rien, c'est que sa source de modulation est restée le micro de façade : sur un FTDX10, réglez MENU → SSB MOD SOURCE sur REAR (l'entrée USB).", 'aud.micLevel': 'Niveau micro', 'aud.qsoPlayLevel': 'Niveau de relecture QSO', 'aud.levelHint': 'Si votre voix est plus forte que la station, baissez le niveau micro.',
   'aud.autoSend': "Envoyer automatiquement l'enregistrement à la station par e-mail lorsque j'enregistre un QSO",
-  'aud.dvkTitle': 'Messages du manipulateur vocal (F1–F6)', 'aud.pttMethod': 'Méthode PTT', 'aud.pttNone': 'Aucune (VOX)', 'aud.pttCat': 'CAT (la liaison radio)', 'aud.pttRts': 'RTS série', 'aud.pttDtr': 'DTR série',
+  'aud.dvkTitle': 'Messages du manipulateur vocal (F1–F12)', 'aud.pttMethod': 'Méthode PTT', 'aud.pttNone': 'Aucune (VOX)', 'aud.pttCat': 'CAT (la liaison radio)', 'aud.pttRts': 'RTS série', 'aud.pttDtr': 'DTR série',
   'aud.testPtt': 'Tester le PTT', 'aud.pttPort': 'Port COM du PTT', 'aud.pickPort': 'Choisir un port COM', 'aud.selectPort': '— choisir —', 'aud.refresh': 'Actualiser',
   'aud.msgPlaceholder': 'Libellé du message {n} (CQ, report, 73…)', 'aud.holdRec': '● Maintenir pour enreg.', 'aud.recordingNow': '● Enregistrement…', 'aud.play': '▶ Lire', 'aud.stop': '■ Arrêter',
   'aud.errPttTest': 'Test PTT : ', 'aud.errRecord': 'Enregistrement : ', 'aud.errSave': 'Sauvegarde : ', 'aud.errPlay': 'Lecture : ',