chore: release v0.21.6

"Upload" was wrong for half of them: a paper QSL is not uploaded. Every entry
now says whether it sets a STATUS or a DATE, and in which direction — "QRZ.com
sent status", "LoTW received date" — which is also how the ADIF fields read.

Added: the QRZ.com received status (the column existed, it was simply never
offered) and the ten confirmation DATES — QSL / LoTW / eQSL / QRZ.com in both
directions, Club Log and HRDLog outbound only, those two having no return
channel. Dates use the same picker as the QSL Info tab, with a Today (UTC)
button; clearing the field writes an empty value, which is how a wrong date is
removed from a batch.

Fields are grouped by CHANNEL now, each status followed by its date, in the same
order as the QSL Info tab — a longer list, but nothing to hunt for.

The repository whitelist is extended to match: without it the new columns would
have been refused at write time. The old ids (qrz_upload, clublog_upload,
hrdlog_upload) still resolve, in case anything still holds one.

app.go

@@ -1637,6 +1637,14 @@ func (a *App) saveWindowState() {
 		if w > 0 && h > 0 {
 			ws.Width, ws.Height, ws.X, ws.Y = w, h, x, y
 		}
+	} else if max {
+		// The POSITION is recorded even when maximised — it is what identifies the
+		// MONITOR. Without it a multi-screen operator who always runs maximised got
+		// no position at all, and Windows reopened OpsLog on the primary screen
+		// every time. The SIZE is deliberately not touched here: it would be the
+		// maximised size, which must not become the restored-down size.
+		x, y := wruntime.WindowGetPosition(a.ctx)
+		ws.X, ws.Y = x, y
 	}
 	writeWindowState(a.dataDir, ws)
 }
@@ -1651,7 +1659,24 @@ func (a *App) restoreWindowPosition() {
 		return
 	}
 	ws, ok := readWindowState(a.dataDir)
-	if !ok || ws.Maximised {
+	if !ok {
+		return
+	}
+	// Maximised: Windows reopens it on the PRIMARY screen unless we say otherwise,
+	// so a two-screen operator lost OpsLog to the wrong monitor at every launch.
+	// Un-maximise, move to the saved corner (which names the monitor), maximise
+	// again — all while the window is still hidden, so nothing flickers.
+	if ws.Maximised {
+		if ws.X == 0 && ws.Y == 0 {
+			return // never recorded (or genuinely the primary corner) — nothing to do
+		}
+		if !onSomeMonitor(ws.X, ws.Y, normalMinW, normalMinH) {
+			applog.Printf("window: saved maximised corner %d,%d is off every monitor — opening where Windows puts it", ws.X, ws.Y)
+			return
+		}
+		wruntime.WindowUnmaximise(a.ctx)
+		wruntime.WindowSetPosition(a.ctx, ws.X, ws.Y)
+		wruntime.WindowMaximise(a.ctx)
 		return
 	}
 	if ws.Width < normalMinW || ws.Height < normalMinH || ws.Width > maxW || ws.Height > maxH {
@@ -5537,16 +5562,33 @@ func (a *App) BulkUpdateQSL(ids []int64, u QSLBulkUpdate) (int, error) {
 // layer so the frontend works with stable ids, not raw column names.
 var bulkFieldColumns = map[string]string{
 	// QSL / upload status
-	"lotw_sent":      "lotw_sent",
+	"lotw_sent":    "lotw_sent",
-	"lotw_rcvd":      "lotw_rcvd",
+	"lotw_rcvd":    "lotw_rcvd",
-	"eqsl_sent":      "eqsl_sent",
+	"eqsl_sent":    "eqsl_sent",
-	"eqsl_rcvd":      "eqsl_rcvd",
+	"eqsl_rcvd":    "eqsl_rcvd",
-	"qsl_sent":       "qsl_sent",
+	"qsl_sent":     "qsl_sent",
-	"qsl_rcvd":       "qsl_rcvd",
+	"qsl_rcvd":     "qsl_rcvd",
-	"qsl_via":        "qsl_via",
+	"qsl_via":      "qsl_via",
+	"qrz_sent":     "qrzcom_qso_upload_status",
+	"qrz_rcvd":     "qrzcom_qso_download_status",
+	"clublog_sent": "clublog_qso_upload_status",
+	"hrdlog_sent":  "hrdlog_qso_upload_status",
+	// Old ids kept so anything holding one keeps working.
 	"qrz_upload":     "qrzcom_qso_upload_status",
 	"clublog_upload": "clublog_qso_upload_status",
 	"hrdlog_upload":  "hrdlog_qso_upload_status",
+	// Confirmation DATES. A status without its date is half the record: an
+	// operator correcting a batch after an import needs both.
+	"qsl_sent_date":     "qsl_sent_date",
+	"qsl_rcvd_date":     "qsl_rcvd_date",
+	"lotw_sent_date":    "lotw_sent_date",
+	"lotw_rcvd_date":    "lotw_rcvd_date",
+	"eqsl_sent_date":    "eqsl_sent_date",
+	"eqsl_rcvd_date":    "eqsl_rcvd_date",
+	"qrz_sent_date":     "qrzcom_qso_upload_date",
+	"qrz_rcvd_date":     "qrzcom_qso_download_date",
+	"clublog_sent_date": "clublog_qso_upload_date",
+	"hrdlog_sent_date":  "hrdlog_qso_upload_date",
 	// My station / operator
 	"station_callsign": "station_callsign",
 	"operator":         "operator",
@@ -6541,7 +6583,7 @@ func (a *App) SaveCATSettings(s CATSettings) error {
 			return err
 		}
 	}
-	a.reloadCAT()
+	a.restartAsync("cat", a.reloadCAT)
 	return nil
 }
 
@@ -11764,12 +11806,34 @@ func (a *App) SwitchCATRig(n int) error {
 	if err := a.settings.Set(a.ctx, keyCATOmniRigNum, strconv.Itoa(n)); err != nil {
 		return err
 	}
-	a.reloadCAT()
+	a.restartAsync("cat", a.reloadCAT)
 	return nil
 }
 
 // reloadCAT (re)starts the CAT manager based on the current settings.
 // Called at startup and after the user saves new CAT config.
+// restartAsync runs a hardware (re)start off the caller's goroutine.
+//
+// Saving settings must never block the UI on a device. Restarting a link tears
+// the old one down FIRST and waits for its poll goroutine to exit — and that
+// goroutine can be tens of seconds deep inside a call that cannot be
+// interrupted: OmniRig's COM Connect when another program (MSHV, a contest
+// logger) is holding the rig takes ~45 s to give up. Save-and-close froze for
+// exactly that long, because the Wails binding was waiting on it.
+//
+// The restart still takes as long; it just no longer holds the window. The
+// duration is logged, since "the rig took 45 s to let go" is invisible
+// otherwise and looks like OpsLog hanging.
+func (a *App) restartAsync(name string, f func()) {
+	go func() {
+		t0 := time.Now()
+		f()
+		if d := time.Since(t0); d > 2*time.Second {
+			applog.Printf("%s: restart took %s (device slow to release/connect)", name, d.Round(time.Millisecond))
+		}
+	}()
+}
+
 func (a *App) reloadCAT() {
 	if a.cat == nil {
 		return
@@ -12105,7 +12169,10 @@ func (a *App) reloadAfterProfileSwitch() {
 	if a.extsvc != nil {
 		a.extsvc.SetConfig(a.loadExternalServices())
 	}
-	a.reloadCAT()
+	// Off the caller's goroutine for the same reason as the settings save: this
+	// runs from ActivateProfile, a click, and a rig that is slow to release would
+	// otherwise freeze the switch.
+	a.restartAsync("cat", a.reloadCAT)
 	a.startQSORecorderIfEnabled()
 }
 
@@ -12835,7 +12902,7 @@ func (a *App) SaveUltrabeamSettings(s UltrabeamSettings) error {
 			return err
 		}
 	}
-	a.startUltrabeam()
+	a.restartAsync("antenna", a.startUltrabeam)
 	return nil
 }
 
@@ -13408,7 +13475,7 @@ func (a *App) SavePGXLSettings(s PGXLSettings) error {
 			return err
 		}
 	}
-	a.startAmps()
+	a.restartAsync("amp", a.startAmps)
 	return nil
 }
 
@@ -13544,7 +13611,7 @@ func (a *App) SaveAmplifiers(list []AmpConfig) error {
 	if err := a.settings.Set(a.ctx, keyAmpsList, string(b)); err != nil {
 		return err
 	}
-	a.startAmps()
+	a.restartAsync("amp", a.startAmps)
 	return nil
 }
 
@@ -13989,6 +14056,18 @@ func (a *App) SaveWinkeyerSettings(s WinkeyerSettings) error {
 	return nil
 }
 
+// SetWinkeyerTrace turns the byte-level WinKeyer protocol trace on or off.
+//
+// The K1EL command set differs across WK1 / WK2 / WK3 and a mismatch is silent:
+// the keyer accepts a byte meant for another command and keys something odd
+// (one element then a long pause, a sidetone that will not switch off). Reading
+// the actual wire is the only way to tell which command the firmware misread,
+// and it beats guessing from a description — a guessed fix breaks the operators
+// for whom it currently works.
+func (a *App) SetWinkeyerTrace(on bool) {
+	winkeyer.SetTrace(on)
+}
+
 // WinkeyerConnect opens the serial link using the saved config.
 func (a *App) WinkeyerConnect() error {
 	if a.winkeyer == nil {

changelog.json

@@ -1,4 +1,34 @@
 [
+  {
+    "version": "0.21.6",
+    "date": "2026-07-27",
+    "en": [
+      "Statistics: the activity chart now follows the period you selected, and Day / Week / Month / Year choose the bucket size (QSOs per week over the whole period, for instance). It used to show fixed windows — the last 7 days, the last 30 — regardless of the period.",
+      "Statistics: new \"When you are on the air\" card — by hour and by day of week, over the selected period.",
+      "Band map: the CW / data / phone sub-bands are no longer shaded in the status colours — the SSB portion was amber, the same amber that means \"new band\" on the spots above it. They now use distinct, colour-blind-checked hues and appear in the legend.",
+      "Help menu: a Support OpsLog entry, which opens the donation page in your browser.",
+      "The Callsign field is now visually marked out, so it is no longer mistaken for Name next to it.",
+      "Multi-screen: OpsLog reopens on the screen it was closed on, including when it was maximised — it used to come back on the primary screen every time.",
+      "The Windows title bar is gone: minimise, maximise and close now sit in the OpsLog bar, which you drag to move the window (double-click to maximise). That is 32 pixels of screen back.",
+      "Saving the settings no longer freezes OpsLog while a device is slow to answer. Choosing OmniRig while another program held the rig locked the window for about 45 seconds — the time OmniRig takes to give up. The link is now re-established in the background, and a slow restart is written to the diagnostic log.",
+      "Edit QSO → QSL Info: the sent and received dates now have a calendar picker, plus a button for today's date (UTC).",
+      "CW keyer: the diagnostic log now names the keyer generation (WK1 / WK2 / WK3), and Settings → CW keyer can log every byte exchanged with it — for reporting a keyer that behaves oddly.",
+      "Bulk edit: the confirmation fields are renamed \"sent/received status\" instead of \"upload\", the missing QRZ.com received status is added, and every channel now offers its sent and received DATE with a calendar."
+    ],
+    "fr": [
+      "Statistiques : le graphique d'activité suit désormais la période choisie, et Jour / Semaine / Mois / Année en choisissent le pas (les QSO par semaine sur toute la période, par exemple). Il affichait auparavant des fenêtres fixes — les 7 derniers jours, les 30 derniers — quelle que soit la période.",
+      "Statistiques : nouvelle carte « Quand vous trafiquez » — par heure et par jour de semaine, sur la période choisie.",
+      "Carte de bande : les portions CW / numérique / phonie ne sont plus teintées avec les couleurs de statut — la partie SSB était ambre, l'ambre qui signifie « nouvelle bande » sur les spots posés dessus. Elles utilisent maintenant des teintes distinctes, vérifiées pour le daltonisme, et figurent dans la légende.",
+      "Menu Aide : une entrée « Soutenir OpsLog », qui ouvre la page de don dans votre navigateur.",
+      "Le champ Indicatif est désormais mis en évidence, pour ne plus être confondu avec le champ Nom voisin.",
+      "Multi-écrans : OpsLog se rouvre sur l'écran où il a été fermé, y compris s'il était maximisé — il revenait jusqu'ici sur l'écran principal à chaque fois.",
+      "La barre de titre Windows a disparu : réduire, agrandir et fermer sont désormais dans la barre OpsLog, qu'on saisit pour déplacer la fenêtre (double-clic pour agrandir). Autant de pixels d'écran repris.",
+      "Enregistrer les réglages ne fige plus OpsLog quand un appareil tarde à répondre. Choisir OmniRig alors qu'un autre logiciel tenait la radio bloquait la fenêtre une quarantaine de secondes — le temps qu'OmniRig renonce. La liaison est désormais rétablie en arrière-plan, et un redémarrage lent est noté dans le journal de diagnostic.",
+      "Édition QSO → Infos QSL : les dates d'envoi et de réception disposent d'un calendrier, et d'un bouton pour la date du jour (UTC).",
+      "Keyer CW : le journal de diagnostic nomme désormais la génération du keyer (WK1 / WK2 / WK3), et Réglages → Keyer CW permet de journaliser chaque octet échangé avec lui — pour signaler un keyer au comportement anormal.",
+      "Édition en lot : les champs de confirmation s'appellent désormais « envoi/réception (statut) » au lieu d'« upload », le statut de réception QRZ.com manquant a été ajouté, et chaque canal propose ses DATES d'envoi et de réception avec un calendrier."
+    ]
+  },
   {
     "version": "0.21.5",
     "date": "2026-07-27",

frontend/src/App.tsx

@@ -52,7 +52,7 @@ import {
 } from '../wailsjs/go/main/App';
 import { Combobox } from '@/components/ui/combobox';
 import { applyAwardRefs } from '@/lib/awardRefs';
-import { EventsOn, BrowserOpenURL } from '../wailsjs/runtime/runtime';
+import { EventsOn, BrowserOpenURL, WindowMinimise, WindowToggleMaximise, WindowIsMaximised, Quit } from '../wailsjs/runtime/runtime';
 import type { adif as adifModels, lookup as lookupModels, cat as catModels } from '../wailsjs/go/models';
 import type { QSOForm, WorkedBeforeView, StationSettingsForm, ListsSettingsForm, ModePresetForm } from '@/types';
 
@@ -331,6 +331,54 @@ function computePrefix(call: string): string {
   return lastDigit >= 0 ? c.slice(0, lastDigit + 1) : c;
 }
 
+// WindowControls — minimise / maximise / close, since the window is frameless.
+//
+// Deliberately shaped like the Windows ones (flat, wide, close goes red on
+// hover) rather than styled like the app's own buttons: these are OS controls,
+// and an operator must recognise them without reading them. Close runs the
+// normal shutdown path — the same one the OS button used — so the backup and
+// on-close uploads still happen.
+function WindowControls() {
+  const [max, setMax] = useState(false);
+  useEffect(() => {
+    WindowIsMaximised().then(setMax).catch(() => {});
+  }, []);
+  const btn = 'inline-flex items-center justify-center w-11 h-8 rounded-md text-muted-foreground hover:bg-muted hover:text-foreground transition-colors';
+  return (
+    <div className="flex items-center gap-0.5 -mr-2 ml-1" data-no-drag>
+      <button type="button" className={btn} onClick={() => WindowMinimise()} title="Minimise" aria-label="Minimise">
+        <svg width="10" height="10" viewBox="0 0 10 10" aria-hidden><path d="M0 5h10" stroke="currentColor" strokeWidth="1.2" /></svg>
+      </button>
+      <button type="button" className={btn}
+        // Flip the icon straight away, then confirm from the runtime: reading it
+        // back immediately returns the state BEFORE the toggle has been applied.
+        onClick={() => {
+          WindowToggleMaximise();
+          setMax((v) => !v);
+          setTimeout(() => { WindowIsMaximised().then(setMax).catch(() => {}); }, 150);
+        }}
+        title={max ? 'Restore' : 'Maximise'} aria-label={max ? 'Restore' : 'Maximise'}>
+        {max ? (
+          <svg width="10" height="10" viewBox="0 0 10 10" aria-hidden fill="none" stroke="currentColor" strokeWidth="1.2">
+            <rect x="0.6" y="2.6" width="6.8" height="6.8" /><path d="M2.6 2.6V0.6h6.8v6.8H7.4" />
+          </svg>
+        ) : (
+          <svg width="10" height="10" viewBox="0 0 10 10" aria-hidden fill="none" stroke="currentColor" strokeWidth="1.2">
+            <rect x="0.6" y="0.6" width="8.8" height="8.8" />
+          </svg>
+        )}
+      </button>
+      <button type="button"
+        className="inline-flex items-center justify-center w-11 h-8 rounded-md text-muted-foreground hover:bg-danger hover:text-danger-foreground transition-colors"
+        onClick={() => Quit()} title="Close" aria-label="Close">
+        <svg width="10" height="10" viewBox="0 0 10 10" aria-hidden stroke="currentColor" strokeWidth="1.2">
+          <path d="M0.5 0.5l9 9M9.5 0.5l-9 9" />
+        </svg>
+      </button>
+    </div>
+  );
+}
+
 export default function App() {
   const { t, lang } = useI18n();
   // === Lists from settings (fallback for first paint) ===
@@ -3292,6 +3340,8 @@ export default function App() {
         { type: 'item' as const, label: sendingLog ? t('help.sendLogBusy') : t('help.sendLog'), action: 'help.sendlog', disabled: sendingLog },
       ] : []),
       { type: 'separator' },
+      { type: 'item', label: t('help.donate'), action: 'help.donate', accent: true },
+      { type: 'separator' },
       { type: 'item', label: t('help.about'), action: 'help.about' },
     ]},
   ], [total, selectedId, selectedIds, ctyRefreshing, refsDownloading, exporting, wkEnabled, dvkEnabled, cwEnabled, netEnabled, contestTabEnabled, smtpConfigured, sendingLog, t]);
@@ -3325,6 +3375,9 @@ export default function App() {
       case 'help.about':        setShowAbout(true); checkUpdateNow(); break;
       case 'help.whatsnew':     GetChangelog().then((e: any) => { if (Array.isArray(e) && e.length) setWhatsNew(e); else showToast(t('whatsnew.none')); }).catch(() => {}); break;
       case 'help.sendlog':      sendLogToDeveloper(); break;
+      // Opens in the system browser, NOT the app WebView: a payment page must show
+      // the address bar and padlock the donor knows how to check.
+      case 'help.donate':       BrowserOpenURL('https://www.paypal.com/donate/?hosted_button_id=PDMY7KV99K38S'); break;
     }
   }
 
@@ -3456,7 +3509,7 @@ export default function App() {
   const callsignBlock = (
     <div className="flex flex-col w-44" data-esm="call">
       <Label className="flex items-center gap-2 h-3.5" style={{ marginBottom: 6 }}>
-        {t('field.callsign')}
+        <span className="text-primary font-semibold">{t('field.callsign')}</span>
         {lookupBusy && (
           <span className="inline-flex items-center gap-1 rounded-full bg-muted/70 px-1.5 py-[1px] text-[9px] font-medium text-muted-foreground ring-1 ring-inset ring-border/60">
             <Loader2 className="size-2.5 animate-spin" />…
@@ -3510,8 +3563,14 @@ export default function App() {
       )}
       <Input
         ref={callsignRef}
+        // The call field is marked out at REST, not only on focus: operators were
+        // typing the callsign into Name, which sits right beside it and looked
+        // exactly the same. A primary-tinted border plus an inset left bar make
+        // it the obvious one without adding a colour the theme doesn't own. The
+        // contest-dupe state still overrides it — that one is a warning.
         className={cn('font-mono text-base font-bold tracking-wider uppercase h-9 bg-muted/40 focus:bg-card',
-          contest.active && contestDupe && 'ring-2 ring-destructive !bg-destructive-muted focus:!bg-destructive-muted text-destructive-muted-foreground')}
+          'border-primary/45 shadow-[inset_3px_0_0_0_var(--primary)]',
+          contest.active && contestDupe && 'ring-2 ring-destructive !bg-destructive-muted focus:!bg-destructive-muted text-destructive-muted-foreground shadow-none')}
         value={callsign}
         onChange={(e) => onCallsignInput(e.target.value)}
         onBlur={() => {
@@ -4235,7 +4294,7 @@ export default function App() {
       {compact ? (
         // Minimal compact topbar — brand + freq + toggle. Saves vertical space
         // so the single-row entry strip fits in a ~140px tall window.
-        <header className="flex items-center gap-3 px-3 h-8 bg-card border-b border-border shrink-0">
+        <header className="app-dragregion flex items-center gap-3 px-3 h-8 bg-card border-b border-border shrink-0">
           <div className="flex items-center gap-1.5">
             <div className="size-2 rounded-full bg-gradient-to-br from-primary to-orange-400" />
             <span className="font-bold text-xs tracking-tight">OpsLog</span>
@@ -4256,7 +4315,15 @@ export default function App() {
           </Button>
         </header>
       ) : (
-        <header className="grid grid-cols-[auto_auto_1fr_auto_auto_auto] items-center gap-4 px-4 h-12 bg-card/95 backdrop-blur border-b border-border shrink-0 shadow-sm">
+        <header
+          className="app-dragregion grid grid-cols-[auto_auto_1fr_auto_auto_auto] items-center gap-4 px-4 h-12 bg-card/95 backdrop-blur border-b border-border shrink-0 shadow-sm"
+          // Double-click anywhere on the bar toggles maximise, as a title bar does.
+          // Frameless windows get none of that for free.
+          onDoubleClick={(e) => {
+            if ((e.target as HTMLElement).closest('button,a,input,select,nav,[role="button"]')) return;
+            WindowToggleMaximise();
+          }}
+        >
           <div className="flex items-center gap-2 pr-2 border-r border-border/60">
             <div className="size-2.5 rounded-full bg-gradient-to-br from-primary to-orange-400 shadow-[0_0_0_3px_rgba(234,88,12,0.18)]" />
             <div className="flex items-baseline gap-1.5">
@@ -4624,6 +4691,8 @@ export default function App() {
             >
               <Minimize2 className="size-3.5" />
             </Button>
+            {/* Window controls — the OS title bar is gone, so they live here. */}
+            <WindowControls />
           </div>
         </header>
       )}

frontend/src/components/BandMap.tsx

@@ -64,25 +64,47 @@ const BAND_RANGES: Record<string, [number, number]> = {
   '70cm': [430000, 440000],
 };
 
+// Sub-band shading: CW / digital / phone.
+//
+// These are IDENTITIES (which mode the segment is for), not states, so they take
+// categorical hues — never the status tokens. They used to use success / info /
+// warning, which collided head-on with the spot pills drawn ON TOP of them: amber
+// is "new band" in this very component's legend, so the whole SSB portion read as
+// a giant "new band" wash. Status colours are reserved for status.
+//
+// All three are drawn from the COOL end of the categorical order and laid down at
+// low opacity, so the band plan stays background context while the warm spot pills
+// keep the foreground to themselves.
+// Checked with the palette validator in BOTH themes. Violet was the first pick
+// for CW and failed on the dark steps — violet and blue land 1.9 ΔE apart for a
+// protan reader there, i.e. the same colour. Magenta clears every check on both
+// surfaces (worst adjacent pair 13.0 light / 15.9 dark).
+const SEG_CW = 'var(--chart-7)';    // magenta
+const SEG_DIGI = 'var(--chart-1)';  // blue
+const SEG_PHONE = 'var(--chart-2)'; // aqua
+// A band-plan wash is CONTEXT, not data: it must stay under the spot pills that
+// are read on top of it.
+const SEG_OPACITY = 0.13;
+
 const SEGMENT_COLORS: Record<string, [number, number, string][]> = {
-  '160m': [[1800, 1838, 'fill-success-muted'], [1838, 1840, 'fill-info-muted'],  [1840, 2000, 'fill-warning-muted']],
+  '160m': [[1800, 1838, SEG_CW], [1838, 1840, SEG_DIGI], [1840, 2000, SEG_PHONE]],
-  '80m':  [[3500, 3580, 'fill-success-muted'], [3580, 3600, 'fill-info-muted'],  [3600, 3800, 'fill-warning-muted']],
+  '80m':  [[3500, 3580, SEG_CW], [3580, 3600, SEG_DIGI], [3600, 3800, SEG_PHONE]],
-  '60m':  [[5350, 5450, 'fill-warning-muted']],
+  '60m':  [[5350, 5450, SEG_PHONE]],
-  '40m':  [[7000, 7040, 'fill-success-muted'], [7040, 7100, 'fill-info-muted'],  [7100, 7200, 'fill-warning-muted']],
+  '40m':  [[7000, 7040, SEG_CW], [7040, 7100, SEG_DIGI], [7100, 7200, SEG_PHONE]],
-  '30m':  [[10100, 10130, 'fill-success-muted'], [10130, 10150, 'fill-info-muted']],
+  '30m':  [[10100, 10130, SEG_CW], [10130, 10150, SEG_DIGI]],
-  '20m':  [[14000, 14070, 'fill-success-muted'], [14070, 14100, 'fill-info-muted'], [14100, 14350, 'fill-warning-muted']],
+  '20m':  [[14000, 14070, SEG_CW], [14070, 14100, SEG_DIGI], [14100, 14350, SEG_PHONE]],
-  '17m':  [[18068, 18095, 'fill-success-muted'], [18095, 18110, 'fill-info-muted'], [18110, 18168, 'fill-warning-muted']],
+  '17m':  [[18068, 18095, SEG_CW], [18095, 18110, SEG_DIGI], [18110, 18168, SEG_PHONE]],
-  '15m':  [[21000, 21070, 'fill-success-muted'], [21070, 21150, 'fill-info-muted'], [21150, 21450, 'fill-warning-muted']],
+  '15m':  [[21000, 21070, SEG_CW], [21070, 21150, SEG_DIGI], [21150, 21450, SEG_PHONE]],
-  '12m':  [[24890, 24915, 'fill-success-muted'], [24915, 24940, 'fill-info-muted'], [24940, 24990, 'fill-warning-muted']],
+  '12m':  [[24890, 24915, SEG_CW], [24915, 24940, SEG_DIGI], [24940, 24990, SEG_PHONE]],
-  '10m':  [[28000, 28070, 'fill-success-muted'], [28070, 28300, 'fill-info-muted'], [28300, 29700, 'fill-warning-muted']],
+  '10m':  [[28000, 28070, SEG_CW], [28070, 28300, SEG_DIGI], [28300, 29700, SEG_PHONE]],
-  '6m':   [[50000, 50100, 'fill-success-muted'], [50100, 50500, 'fill-warning-muted']],
+  '6m':   [[50000, 50100, SEG_CW], [50100, 50500, SEG_PHONE]],
 };
 
 // Small coloured dot + label used in the band-map legend strip.
-function LegendDot({ cls, label }: { cls: string; label: string }) {
+function LegendDot({ cls, colour, label }: { cls?: string; colour?: string; label: string }) {
   return (
     <span className="inline-flex items-center gap-1">
-      <span className={cn('size-2 rounded-full', cls)} />
+      <span className={cn("size-2 rounded-full", cls)} style={colour ? { background: colour } : undefined} />
       {label}
     </span>
   );
@@ -447,10 +469,13 @@ export function BandMap({ band, spots, spotStatus, currentFreqHz, onSpotClick, o
             height={totalH}
             preserveAspectRatio="none"
           >
-            {segments.map(([s, e, cls], i) => {
+            {segments.map(([s, e, colour], i) => {
               const y1 = freqToY(Math.min(e, hi));
               const y2 = freqToY(Math.max(s, lo));
-              return <rect key={i} x={0} y={y1} width={SCALE_W} height={Math.max(0, y2 - y1)} className={cls} />;
+              return (
+                <rect key={i} x={0} y={y1} width={SCALE_W} height={Math.max(0, y2 - y1)}
+                  fill={colour} fillOpacity={SEG_OPACITY} />
+              );
             })}
             <line x1={SCALE_W - 0.5} y1={0} x2={SCALE_W - 0.5} y2={totalH} className="stroke-border" strokeWidth={1} />
           </svg>
@@ -559,7 +584,12 @@ export function BandMap({ band, spots, spotStatus, currentFreqHz, onSpotClick, o
         <LegendDot cls="bg-danger" label={t('bmp.legendNewDxcc')} />
         <LegendDot cls="bg-warning" label={t('bmp.legendNewBand')} />
         <LegendDot cls="bg-caution" label={t('bmp.legendNewSlot')} />
-        <LegendDot cls="bg-muted-foreground/30" label={t('bmp.legendWorked')} />
+        <LegendDot cls="bg-muted-foreground/30" label={t("bmp.legendWorked")} />
+        {/* Sub-band shading, so the wash behind the pills is never colour-alone. */}
+        <span className="mx-0.5 opacity-40">|</span>
+        <LegendDot colour={SEG_CW} label={t("bmp.legendCW")} />
+        <LegendDot colour={SEG_DIGI} label={t("bmp.legendData")} />
+        <LegendDot colour={SEG_PHONE} label={t("bmp.legendPhone")} />
       </div>
       <div className="px-3 py-1 text-[9px] text-muted-foreground bg-muted/30 border-t border-border font-mono text-center shrink-0">
         {t('bmp.footerHint')}

frontend/src/components/BulkEditModal.tsx

@@ -12,7 +12,7 @@ import {
 } from '@/components/ui/select';
 import { useI18n } from '@/lib/i18n';
 
-type FieldKind = 'status' | 'text' | 'freq';
+type FieldKind = 'status' | 'text' | 'freq' | 'date';
 type FieldDef = { id: string; label: string; group: string; kind: FieldKind; upper?: boolean };
 
 // Fields a bulk edit may target. status → Y/N/R/I dropdown; text → free input.
@@ -21,16 +21,31 @@ type FieldDef = { id: string; label: string; group: string; kind: FieldKind; upp
 // label holds an i18n key (resolved with t() at render time).
 const FIELDS: FieldDef[] = [
   // QSL / upload status
-  { id: 'lotw_sent',      label: 'bulk.fLotwSent',       group: 'QSL / upload', kind: 'status' },
+  // One channel at a time, each with its status and its date, in the same order
-  { id: 'lotw_rcvd',      label: 'bulk.fLotwRcvd',       group: 'QSL / upload', kind: 'status' },
+  // as the QSL Info tab. "Upload" was the wrong word for half of them — a paper
-  { id: 'eqsl_sent',      label: 'bulk.fEqslSent',       group: 'QSL / upload', kind: 'status' },
+  // QSL is not uploaded — so every entry now reads "<channel> sent/received
-  { id: 'eqsl_rcvd',      label: 'bulk.fEqslRcvd',       group: 'QSL / upload', kind: 'status' },
+  // status" or "… date", which is also what the ADIF field is called.
-  { id: 'qsl_sent',       label: 'bulk.fQslSent',        group: 'QSL / upload', kind: 'status' },
+  { id: 'qsl_sent',          label: 'bulk.fQslSent',         group: 'QSL / upload', kind: 'status' },
-  { id: 'qsl_rcvd',       label: 'bulk.fQslRcvd',        group: 'QSL / upload', kind: 'status' },
+  { id: 'qsl_sent_date',     label: 'bulk.fQslSentDate',     group: 'QSL / upload', kind: 'date' },
-  { id: 'qrz_upload',     label: 'bulk.fQrzUpload',      group: 'QSL / upload', kind: 'status' },
+  { id: 'qsl_rcvd',          label: 'bulk.fQslRcvd',         group: 'QSL / upload', kind: 'status' },
-  { id: 'clublog_upload', label: 'bulk.fClublogUpload',  group: 'QSL / upload', kind: 'status' },
+  { id: 'qsl_rcvd_date',     label: 'bulk.fQslRcvdDate',     group: 'QSL / upload', kind: 'date' },
-  { id: 'hrdlog_upload',  label: 'bulk.fHrdlogUpload',   group: 'QSL / upload', kind: 'status' },
+  { id: 'qsl_via',           label: 'bulk.fQslVia',          group: 'QSL / upload', kind: 'text' },
-  { id: 'qsl_via',        label: 'bulk.fQslVia',         group: 'QSL / upload', kind: 'text' },
+  { id: 'lotw_sent',         label: 'bulk.fLotwSent',        group: 'QSL / upload', kind: 'status' },
+  { id: 'lotw_sent_date',    label: 'bulk.fLotwSentDate',    group: 'QSL / upload', kind: 'date' },
+  { id: 'lotw_rcvd',         label: 'bulk.fLotwRcvd',        group: 'QSL / upload', kind: 'status' },
+  { id: 'lotw_rcvd_date',    label: 'bulk.fLotwRcvdDate',    group: 'QSL / upload', kind: 'date' },
+  { id: 'eqsl_sent',         label: 'bulk.fEqslSent',        group: 'QSL / upload', kind: 'status' },
+  { id: 'eqsl_sent_date',    label: 'bulk.fEqslSentDate',    group: 'QSL / upload', kind: 'date' },
+  { id: 'eqsl_rcvd',         label: 'bulk.fEqslRcvd',        group: 'QSL / upload', kind: 'status' },
+  { id: 'eqsl_rcvd_date',    label: 'bulk.fEqslRcvdDate',    group: 'QSL / upload', kind: 'date' },
+  { id: 'qrz_sent',          label: 'bulk.fQrzSent',         group: 'QSL / upload', kind: 'status' },
+  { id: 'qrz_sent_date',     label: 'bulk.fQrzSentDate',     group: 'QSL / upload', kind: 'date' },
+  { id: 'qrz_rcvd',          label: 'bulk.fQrzRcvd',         group: 'QSL / upload', kind: 'status' },
+  { id: 'qrz_rcvd_date',     label: 'bulk.fQrzRcvdDate',     group: 'QSL / upload', kind: 'date' },
+  { id: 'clublog_sent',      label: 'bulk.fClublogSent',     group: 'QSL / upload', kind: 'status' },
+  { id: 'clublog_sent_date', label: 'bulk.fClublogSentDate', group: 'QSL / upload', kind: 'date' },
+  { id: 'hrdlog_sent',       label: 'bulk.fHrdlogSent',      group: 'QSL / upload', kind: 'status' },
+  { id: 'hrdlog_sent_date',  label: 'bulk.fHrdlogSentDate',  group: 'QSL / upload', kind: 'date' },
   // My station / operator
   { id: 'station_callsign', label: 'bulk.fStationCall',  group: 'My station', kind: 'text', upper: true },
   { id: 'operator',         label: 'bulk.fOperator',     group: 'My station', kind: 'text', upper: true },
@@ -117,7 +132,7 @@ type Props = {
 // so they become eligible for upload.
 export function BulkEditModal({ open, ids, onClose, onApplied }: Props) {
   const { t } = useI18n();
-  const [field, setField] = useState('hrdlog_upload');
+  const [field, setField] = useState('qsl_sent');
   const [statusValue, setStatusValue] = useState('R');
   const [textValue, setTextValue] = useState('');
   const [busy, setBusy] = useState(false);
@@ -181,6 +196,29 @@ export function BulkEditModal({ open, ids, onClose, onApplied }: Props) {
                   {STATUS_VALUES.map((v) => <SelectItem key={v.v} value={v.v}>{t(v.label)}</SelectItem>)}
                 </SelectContent>
               </Select>
+            ) : def.kind === 'date' ? (
+              // ADIF stores YYYYMMDD; the picker speaks YYYY-MM-DD. Clearing it
+              // writes an empty value — which is how a wrong date is removed
+              // from a batch, the same meaning as leaving a text field blank.
+              <div className="flex gap-1">
+                <Input
+                  type="date"
+                  className="h-8 text-xs font-mono"
+                  value={/^\d{8}$/.test(textValue) ? `${textValue.slice(0, 4)}-${textValue.slice(4, 6)}-${textValue.slice(6, 8)}` : ''}
+                  onChange={(e) => setTextValue(e.target.value ? e.target.value.replace(/-/g, '') : '')}
+                />
+                <Button
+                  type="button" variant="outline" size="sm" className="h-8 shrink-0 px-2"
+                  title={t('bulk.todayUtc')}
+                  onClick={() => {
+                    const d = new Date();
+                    const pad = (n: number) => String(n).padStart(2, '0');
+                    // UTC: the whole log is UTC, and near midnight the local day
+                    // is the wrong one.
+                    setTextValue(`${d.getUTCFullYear()}${pad(d.getUTCMonth() + 1)}${pad(d.getUTCDate())}`);
+                  }}
+                >{t('bulk.today')}</Button>
+              </div>
             ) : (
               <Input
                 className="h-8 text-xs"

frontend/src/components/Menubar.tsx

@@ -6,7 +6,10 @@ import {
 import { cn } from '@/lib/utils';
 
 export type MenuItem =
-  | { type: 'item'; label: string; action: string; shortcut?: string; disabled?: boolean }
+  // accent highlights an item that is an OFFER rather than a command (Donate).
+  // Generic on purpose: a hard-coded label test in the renderer would break the
+  // moment the menu is translated.
+  | { type: 'item'; label: string; action: string; shortcut?: string; disabled?: boolean; accent?: boolean }
   | { type: 'separator' };
 
 export interface Menu {
@@ -77,6 +80,7 @@ export function Menubar({ menus, onAction }: Props) {
                 <DropdownMenuItem
                   key={i}
                   disabled={item.disabled}
+                  className={item.accent ? 'text-warning focus:text-warning font-medium' : undefined}
                   onSelect={() => onAction(item.action)}
                 >
                   <span>{item.label}</span>

frontend/src/components/QSOEditModal.tsx

@@ -1,5 +1,5 @@
 import { useEffect, useMemo, useRef, useState } from 'react';
-import { Trash2, Search, Loader2 } from 'lucide-react';
+import { Trash2, Search, Loader2, CalendarDays } from 'lucide-react';
 import { LookupCallsign, DXCCForCountry, GetAwardDefs, ComputeQSOAwardRefs, GetListsSettings } from '../../wailsjs/go/main/App';
 import { rstOptions, type RSTLists } from '@/lib/rst';
 import { AwardRefSelector } from '@/components/AwardRefSelector';
@@ -148,6 +148,56 @@ function F({ label, span = 1, children }: { label: string; span?: 1 | 2 | 3 | 6;
   );
 }
 
+// AdifDateInput — a real date picker over an ADIF date.
+//
+// ADIF stores YYYYMMDD; the browser's date input speaks YYYY-MM-DD, so the two
+// are converted at the edge and the log keeps its ADIF form. The native control
+// is used on purpose: it brings the OS calendar, the locale's day/month order
+// and keyboard entry for free, which a hand-rolled popover would have to
+// reimplement and get wrong.
+//
+// A value that is NOT a valid 8-digit date (an old hand-typed entry) is shown in
+// a plain text box instead, so it stays visible and correctable rather than
+// silently disappearing behind an empty picker.
+function AdifDateInput({ value, onChange, disabled }: { value?: string; onChange: (v: string) => void; disabled?: boolean }) {
+  const raw = (value ?? '').trim();
+  const valid = /^\d{8}$/.test(raw);
+  const iso = valid ? `${raw.slice(0, 4)}-${raw.slice(4, 6)}-${raw.slice(6, 8)}` : '';
+  const today = () => {
+    const d = new Date();
+    const p = (n: number) => String(n).padStart(2, '0');
+    // UTC: every date in the log is UTC, and near midnight the local day is the
+    // wrong one.
+    onChange(`${d.getUTCFullYear()}${p(d.getUTCMonth() + 1)}${p(d.getUTCDate())}`);
+  };
+  if (raw !== '' && !valid) {
+    return (
+      <div className="flex gap-1">
+        <Input value={raw} onChange={(e) => onChange(e.target.value)} disabled={disabled} className="font-mono" />
+        <Button type="button" variant="outline" size="sm" className="shrink-0 px-2" onClick={() => onChange('')} title="Clear">×</Button>
+      </div>
+    );
+  }
+  return (
+    <div className="flex gap-1">
+      <Input
+        type="date"
+        value={iso}
+        disabled={disabled}
+        onChange={(e) => {
+          const v = e.target.value; // "" when cleared
+          onChange(v ? v.replace(/-/g, '') : '');
+        }}
+        className="font-mono"
+      />
+      <Button type="button" variant="outline" size="sm" className="shrink-0 px-2" disabled={disabled}
+        onClick={today} title="Today (UTC)">
+        <CalendarDays className="size-3.5" />
+      </Button>
+    </div>
+  );
+}
+
 function QslSelect({ value, onChange }: { value?: string; onChange: (v: string) => void }) {
   const { t } = useI18n();
   return (
@@ -580,8 +630,8 @@ export function QSOEditModal({ qso, onSave, onDelete, onClose, countries = [], b
                             ? <QslSelect value={val(def.rcvd)} onChange={(v) => put(def.rcvd, v)} />
                             : <Input disabled value="—" />}
                         </div>
-                        <div><Label>{t('qedit.dateSent')}</Label><Input value={val(def.sentDate)} placeholder="YYYYMMDD" onChange={(e) => put(def.sentDate, e.target.value)} className="font-mono" /></div>
+                        <div><Label>{t('qedit.dateSent')}</Label><AdifDateInput value={val(def.sentDate)} onChange={(v) => put(def.sentDate, v)} /></div>
-                        <div><Label>{t('qedit.dateReceived')}</Label><Input value={val(def.rcvdDate)} placeholder="YYYYMMDD" disabled={!def.rcvdDate} onChange={(e) => put(def.rcvdDate, e.target.value)} className="font-mono" /></div>
+                        <div><Label>{t('qedit.dateReceived')}</Label><AdifDateInput value={val(def.rcvdDate)} onChange={(v) => put(def.rcvdDate, v)} disabled={!def.rcvdDate} /></div>
                         {def.via && (
                           <div className="col-span-2"><Label>{t('qedit.via')}</Label><Input value={val(def.via)} onChange={(e) => put(def.via, e.target.value)} placeholder={t('qedit.viaPlaceholder')} /></div>
                         )}

frontend/src/components/SettingsModal.tsx

@@ -35,6 +35,7 @@ import {
   GetAutostartPrograms, SaveAutostartPrograms, BrowseExecutable, LaunchAutostartProgram,
   GetTelemetryEnabled, SetTelemetryEnabled,
   GetQSLDefaults, SaveQSLDefaults,
+  SetWinkeyerTrace,
   GetExternalServices, SaveExternalServices, TestQRZUpload, TestClublogUpload, TestHRDLogUpload, TestEQSLUpload, TestCloudlogUpload,
   GetPOTAToken, SavePOTAToken,
   TestLoTWUpload, ListTQSLStationLocations,
@@ -1093,6 +1094,8 @@ export function SettingsModal({ onClose, onSaved, initialSection, onMainPaneChan
     swap: false, autospace: true, use_ptt: false, serial_echo: true, cw_key_line: 'dtr', cw_invert: false, macros: [],
   });
   const [wkPorts, setWkPorts] = useState<string[]>([]);
+  // Session-only: the byte trace is a diagnostic, never a saved preference.
+  const [wkTrace, setWkTrace] = useState(false);
   const setWkField = (patch: Partial<WKSettings>) => setWk((s) => ({ ...s, ...patch }));
 
   // ── Audio (DVK + QSO recorder) ──
@@ -3363,6 +3366,17 @@ export function SettingsModal({ onClose, onSaved, initialSection, onMainPaneChan
                   <Checkbox checked={wk.serial_echo} onCheckedChange={(c) => setWkField({ serial_echo: !!c })} /> {t('wk.serialEcho')}
                 </label>
               </div>
+
+              {/* Protocol trace — for reporting a keyer that misbehaves. Session
+                  only, deliberately not persisted: it is a diagnostic, and a log
+                  full of hex bytes helps nobody who forgot it was on. */}
+              <div className="border-t border-border/60 pt-3">
+                <label className="flex items-center gap-2 text-sm cursor-pointer">
+                  <Checkbox checked={wkTrace} onCheckedChange={(c) => { setWkTrace(!!c); SetWinkeyerTrace(!!c); }} />
+                  {t('wk.trace')}
+                </label>
+                <p className="text-[10px] text-muted-foreground mt-1">{t('wk.traceHint')}</p>
+              </div>
             </>
           )}
 

frontend/src/components/StatsPanel.tsx

@@ -33,6 +33,10 @@ type Stats = {
   by_mode: Bucket[]; by_band: Bucket[]; by_band_category: BandCat[]; by_operator: Bucket[]; by_station: Bucket[];
   by_continent: Bucket[]; top_entities: Bucket[]; by_year: Bucket[]; by_month: Bucket[];
   by_hour: Bucket[]; by_day7: Bucket[]; by_day30: Bucket[]; by_month12: Bucket[];
+  // Chronological series across the SELECTED period, one per bucket size; empty
+  // when that bucket would be too fine for the period (see the Go side).
+  by_day_win: Bucket[]; by_week_win: Bucket[]; by_month_win: Bucket[]; by_year_win: Bucket[];
+  by_hour_of_day: Bucket[]; by_weekday: Bucket[];
   // Period / contest metrics.
   window_start: string; window_end: string; window_hours: number;
   avg_per_hour: number; avg_per_active: number;
@@ -509,19 +513,44 @@ function periodRange(p: Period, from: string, to: string): [string, string] {
 // own state, module-scoped so a parent re-render doesn't reset the choice. The
 // timeline is the chronological month series; day/week/month/year are the cyclical
 // distributions (hour-of-day, day-of-week, day-of-month, month-of-year).
+// The selector is a BUCKET SIZE applied to the period chosen at the top of the
+// panel — not a window of its own. It used to be four fixed rolling windows
+// anchored on the newest QSO, which ignored the period filter entirely: picking
+// a year up top left this chart showing the last 7 days.
 const ACT_GRAN = [
-  { key: 'timeline', tkey: 'stats.granTimeline' },
   { key: 'day', tkey: 'stats.granDay' },
   { key: 'week', tkey: 'stats.granWeek' },
   { key: 'month', tkey: 'stats.granMonth' },
   { key: 'year', tkey: 'stats.granYear' },
 ] as const;
+type Gran = typeof ACT_GRAN[number]['key'];
+const COARSER: Record<Gran, Gran | null> = { day: 'week', week: 'month', month: 'year', year: null };
+
 function ActivityCard({ stats, t, empty }: { stats: Stats; t: (k: string, v?: any) => string; empty: string }) {
-  const [g, setG] = useState<string>('timeline');
+  const [g, setG] = useState<Gran | 'auto'>('auto');
-  const series = g === 'day' ? stats.by_hour : g === 'week' ? stats.by_day7 : g === 'month' ? stats.by_day30 : g === 'year' ? stats.by_month12 : [];
+  const seriesFor = (k: Gran): Bucket[] => (
+    k === 'day' ? stats.by_day_win : k === 'week' ? stats.by_week_win : k === 'month' ? stats.by_month_win : stats.by_year_win
+  );
+
+  // Auto picks the finest bucket that stays readable: the backend leaves a
+  // series empty when it would be too fine for the period, so "the first
+  // non-empty one" is exactly the right rule and needs no thresholds here.
+  const auto: Gran = (['day', 'week', 'month', 'year'] as Gran[]).find((k) => seriesFor(k).length > 0 && seriesFor(k).length <= 120) ?? 'year';
+  // A bucket the user forces but that is too fine for the period falls back to
+  // the next coarser one rather than showing an empty chart.
+  let shown: Gran = g === 'auto' ? auto : g;
+  while (seriesFor(shown).length === 0 && COARSER[shown]) shown = COARSER[shown]!;
+  const series = seriesFor(shown);
+  const steppedUp = g !== 'auto' && shown !== g;
+
   return (
     <Card title={t('stats.overTime')} sub={t('stats.overTimeSub')} className="lg:col-span-2" accent="var(--chart-1)">
-      <div className="mb-2 flex flex-wrap gap-1">
+      <div className="mb-2 flex flex-wrap gap-1 items-center">
+        <button type="button" onClick={() => setG('auto')}
+          className={cn('px-2 py-0.5 rounded-md text-[11px] border transition-colors',
+            g === 'auto' ? 'bg-primary text-primary-foreground border-primary' : 'border-border text-muted-foreground hover:bg-muted')}>
+          {t('stats.granAuto')}
+        </button>
         {ACT_GRAN.map((o) => (
           <button key={o.key} type="button" onClick={() => setG(o.key)}
             className={cn('px-2 py-0.5 rounded-md text-[11px] border transition-colors',
@@ -529,14 +558,39 @@ function ActivityCard({ stats, t, empty }: { stats: Stats; t: (k: string, v?: an
             {t(o.tkey)}
           </button>
         ))}
+        {steppedUp && (
+          <span className="text-[10px] text-muted-foreground">{t('stats.granTooFine')}</span>
+        )}
       </div>
-      {g === 'timeline'
+      {/* Many buckets read better as a filled trend than as a forest of bars. */}
-        ? <AreaTrend data={stats.by_month} empty={empty} />
+      {series.length > 60
+        ? <AreaTrend data={series} empty={empty} />
         : <VBars data={series} empty={empty} showValues height={160} />}
     </Card>
   );
 }
 
+// RhythmCard — WHEN the operator is on the air over the selected period, which is
+// a different question from "how much lately" and so gets its own card. The hour
+// histogram used to cover a single day, too little to read anything from.
+function RhythmCard({ stats, t, empty }: { stats: Stats; t: (k: string, v?: any) => string; empty: string }) {
+  const [g, setG] = useState<'hour' | 'weekday'>('hour');
+  return (
+    <Card title={t('stats.rhythm')} sub={t('stats.rhythmSub')} className="lg:col-span-2" accent="var(--chart-2)">
+      <div className="mb-2 flex flex-wrap gap-1">
+        {([['hour', 'stats.byHourOfDay'], ['weekday', 'stats.byWeekday']] as const).map(([k, tk]) => (
+          <button key={k} type="button" onClick={() => setG(k)}
+            className={cn('px-2 py-0.5 rounded-md text-[11px] border transition-colors',
+              g === k ? 'bg-primary text-primary-foreground border-primary' : 'border-border text-muted-foreground hover:bg-muted')}>
+            {t(tk)}
+          </button>
+        ))}
+      </div>
+      <VBars data={g === 'hour' ? stats.by_hour_of_day : stats.by_weekday} empty={empty} showValues height={160} />
+    </Card>
+  );
+}
+
 // ── Table view (the WCAG-clean twin) ─────────────────────────────────────────
 
 function BucketTable({ title, data }: { title: string; data: Bucket[] }) {
@@ -603,6 +657,8 @@ export function StatsPanel() {
         by_station: arr(raw.by_station), by_continent: arr(raw.by_continent),
         top_entities: arr(raw.top_entities), by_year: arr(raw.by_year), by_month: arr(raw.by_month),
         by_hour: arr(raw.by_hour), by_day7: arr(raw.by_day7), by_day30: arr(raw.by_day30), by_month12: arr(raw.by_month12),
+        by_day_win: arr(raw.by_day_win), by_week_win: arr(raw.by_week_win), by_month_win: arr(raw.by_month_win), by_year_win: arr(raw.by_year_win),
+        by_hour_of_day: arr(raw.by_hour_of_day), by_weekday: arr(raw.by_weekday),
         rate: arr(raw.rate), gaps: arr(raw.gaps),
         rate_ops: arr(raw.rate_ops), rate_by_op: arr(raw.rate_by_op),
       } as Stats);
@@ -818,6 +874,7 @@ export function StatsPanel() {
           </Card>
 
           <ActivityCard stats={stats} t={t} empty={empty} />
+          <RhythmCard stats={stats} t={t} empty={empty} />
 
           {/* EVERY operator, never a top-N: on a multi-op contest the point is who
               worked what, and a cap would quietly delete the 9th operator. Scrolls

frontend/src/style.css

@@ -652,3 +652,37 @@
   border: 2px solid var(--background);
 }
 ::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-thumb-hover); }
+
+/* ── Frameless window: drag region ──────────────────────────────────────────
+   The OS title bar is gone (main.go, Frameless), so the app header IS the title
+   bar and must be draggable. Everything interactive inside it opts OUT: a drag
+   region swallows clicks, and without this the menus and toolbar buttons would
+   move the window instead of doing their job. Opting out by ROLE rather than
+   listing each child keeps a future button working without anyone remembering
+   this rule. */
+.app-dragregion {
+  --wails-draggable: drag;
+}
+.app-dragregion button,
+.app-dragregion a,
+.app-dragregion input,
+.app-dragregion select,
+.app-dragregion textarea,
+.app-dragregion nav,
+.app-dragregion [role='button'],
+.app-dragregion [role='menu'],
+.app-dragregion [data-no-drag] {
+  --wails-draggable: no-drag;
+}
+
+/* Native date inputs: the WebView draws its calendar glyph in near-black, which
+   disappears on the dark themes. Invert it there — the control itself is worth
+   keeping (OS calendar, locale date order, keyboard entry), only its icon needs
+   help. */
+[data-theme='dim-slate'] input[type='date']::-webkit-calendar-picker-indicator,
+[data-theme='dark-warm'] input[type='date']::-webkit-calendar-picker-indicator,
+[data-theme='dark-graphite'] input[type='date']::-webkit-calendar-picker-indicator,
+[data-theme='high-contrast'] input[type='date']::-webkit-calendar-picker-indicator {
+  filter: invert(1) brightness(1.6);
+  opacity: 0.75;
+}

frontend/src/version.ts

@@ -1,6 +1,6 @@
 // Single source of truth for the app version shown in the UI (header + About).
 // Bump this on a release (the release script updates it alongside telemetry.go).
-export const APP_VERSION = '0.21.5';
+export const APP_VERSION = '0.21.6';
 
 // Author / credits, shown in Help -> About.
 export const APP_AUTHOR = 'F4BPO';

frontend/wailsjs/go/main/App.d.ts

@@ -907,6 +907,8 @@ export function SetUIPref(arg1:string,arg2:string):Promise<void>;
 
 export function SetUltrabeamDirection(arg1:number):Promise<void>;
 
+export function SetWinkeyerTrace(arg1:boolean):Promise<void>;
+
 export function StartCWDecoder():Promise<void>;
 
 export function StationSetRelay(arg1:string,arg2:number,arg3:boolean):Promise<void>;

frontend/wailsjs/go/main/App.js

@@ -1762,6 +1762,10 @@ export function SetUltrabeamDirection(arg1) {
   return window['go']['main']['App']['SetUltrabeamDirection'](arg1);
 }
 
+export function SetWinkeyerTrace(arg1) {
+  return window['go']['main']['App']['SetWinkeyerTrace'](arg1);
+}
+
 export function StartCWDecoder() {
   return window['go']['main']['App']['StartCWDecoder']();
 }

frontend/wailsjs/go/models.ts

@@ -4204,6 +4204,12 @@ export namespace qso {
 	    by_day7: Bucket[];
 	    by_day30: Bucket[];
 	    by_month12: Bucket[];
+	    by_day_win: Bucket[];
+	    by_week_win: Bucket[];
+	    by_month_win: Bucket[];
+	    by_year_win: Bucket[];
+	    by_hour_of_day: Bucket[];
+	    by_weekday: Bucket[];
 	    window_start: string;
 	    window_end: string;
 	    window_hours: number;
@@ -4248,6 +4254,12 @@ export namespace qso {
 	        this.by_day7 = this.convertValues(source["by_day7"], Bucket);
 	        this.by_day30 = this.convertValues(source["by_day30"], Bucket);
 	        this.by_month12 = this.convertValues(source["by_month12"], Bucket);
+	        this.by_day_win = this.convertValues(source["by_day_win"], Bucket);
+	        this.by_week_win = this.convertValues(source["by_week_win"], Bucket);
+	        this.by_month_win = this.convertValues(source["by_month_win"], Bucket);
+	        this.by_year_win = this.convertValues(source["by_year_win"], Bucket);
+	        this.by_hour_of_day = this.convertValues(source["by_hour_of_day"], Bucket);
+	        this.by_weekday = this.convertValues(source["by_weekday"], Bucket);
 	        this.window_start = source["window_start"];
 	        this.window_end = source["window_end"];
 	        this.window_hours = source["window_hours"];

internal/qso/qso.go

@@ -536,11 +536,23 @@ type UploadRow struct {
 // uploadStatusCols whitelists the per-service sent-status columns the QSL
 // Manager may filter on (guards the dynamic column name in the query).
 var uploadStatusCols = map[string]bool{
-	"lotw_sent":                 true,
+	"lotw_sent":                  true,
-	"eqsl_sent":                 true,
+	"eqsl_sent":                  true,
-	"qrzcom_qso_upload_status":  true,
+	"qrzcom_qso_upload_status":   true,
-	"clublog_qso_upload_status": true,
+	"qrzcom_qso_download_status": true,
-	"hrdlog_qso_upload_status":  true,
+	"clublog_qso_upload_status":  true,
+	"hrdlog_qso_upload_status":   true,
+	// Confirmation dates (ADIF YYYYMMDD strings, so plain TEXT like the rest).
+	"qsl_sent_date":            true,
+	"qsl_rcvd_date":            true,
+	"lotw_sent_date":           true,
+	"lotw_rcvd_date":           true,
+	"eqsl_sent_date":           true,
+	"eqsl_rcvd_date":           true,
+	"qrzcom_qso_upload_date":   true,
+	"qrzcom_qso_download_date": true,
+	"clublog_qso_upload_date":  true,
+	"hrdlog_qso_upload_date":   true,
 }
 
 // ListForUpload returns QSOs whose per-service sent-status column equals

internal/qso/stats.go

@@ -156,28 +156,49 @@ type Stats struct {
 	ByMode         []Bucket       `json:"by_mode"`
 	ByBand         []Bucket       `json:"by_band"`
 	ByBandCategory []BandCategory `json:"by_band_category"` // per band: CW / phone / data split
-	ByOperator  []Bucket `json:"by_operator"`
+	ByOperator     []Bucket       `json:"by_operator"`
-	ByStation   []Bucket `json:"by_station"` // station_callsign (the call put on the air)
+	ByStation      []Bucket       `json:"by_station"` // station_callsign (the call put on the air)
-	ByContinent []Bucket `json:"by_continent"`
+	ByContinent    []Bucket       `json:"by_continent"`
-	TopEntities []Bucket `json:"top_entities"`
+	TopEntities    []Bucket       `json:"top_entities"`
-	ByYear      []Bucket `json:"by_year"`  // chronological
+	ByYear         []Bucket       `json:"by_year"`  // chronological
-	ByMonth     []Bucket `json:"by_month"` // "YYYY-MM", chronological
+	ByMonth        []Bucket       `json:"by_month"` // "YYYY-MM", chronological
 
 	// Rolling chronological activity windows (UTC), anchored to the newest QSO, for
 	// the "activity over time" chart's day/week/month/year granularity selector.
 	// Real dates in order (empty buckets are real, just zero) — no cyclical wrap.
-	ByHour    []Bucket `json:"by_hour"`     // the newest QSO's day, hour by hour (00..23)
+	ByHour    []Bucket `json:"by_hour"`    // the newest QSO's day, hour by hour (00..23)
-	ByDay7    []Bucket `json:"by_day7"`     // the last 7 days ending at the newest QSO
+	ByDay7    []Bucket `json:"by_day7"`    // the last 7 days ending at the newest QSO
-	ByDay30   []Bucket `json:"by_day30"`    // the last 30 days
+	ByDay30   []Bucket `json:"by_day30"`   // the last 30 days
-	ByMonth12 []Bucket `json:"by_month12"`  // the last 12 months
+	ByMonth12 []Bucket `json:"by_month12"` // the last 12 months
+
+	// Chronological activity ACROSS THE SELECTED PERIOD, one series per bucket
+	// size. These are what the activity chart's day/week/month/year selector
+	// drives: the rolling windows above ignored the period filter, so choosing a
+	// year in the panel left the chart showing the last 7 days regardless — two
+	// controls contradicting each other on screen.
+	//
+	// A series is EMPTY when it would exceed maxActivityBuckets (per-day over a
+	// seventeen-year log is ~6000 bars: unreadable, and pointless to transport).
+	// The UI treats an empty series as "too fine for this period" and steps up.
+	ByDayWin   []Bucket `json:"by_day_win"`
+	ByWeekWin  []Bucket `json:"by_week_win"`
+	ByMonthWin []Bucket `json:"by_month_win"`
+	ByYearWin  []Bucket `json:"by_year_win"`
+
+	// Rhythm: WHEN the operator is on the air, over the selected period. Distinct
+	// question from the above ("how much, lately"), so it gets its own card. The
+	// hour histogram used to cover a single day, which is too little to read
+	// anything from.
+	ByHourOfDay []Bucket `json:"by_hour_of_day"` // 00h..23h UTC
+	ByWeekday   []Bucket `json:"by_weekday"`     // Mon..Sun
 
 	// ── Period / contest metrics ──
 	// Meaningful only over a WINDOW: "12 QSO/h" across seventeen years says
 	// nothing, but across a contest weekend it is the score. The window is the
 	// requested [from,to] when given, else the span of the log.
-	WindowStart   string   `json:"window_start"`
+	WindowStart  string  `json:"window_start"`
-	WindowEnd     string   `json:"window_end"`
+	WindowEnd    string  `json:"window_end"`
-	WindowHours   float64  `json:"window_hours"`
+	WindowHours  float64 `json:"window_hours"`
 	AvgPerHour   float64 `json:"avg_per_hour"`   // QSOs ÷ window hours (breaks included — the honest rate)
 	AvgPerActive float64 `json:"avg_per_active"` // QSOs ÷ ON-AIR hours
 
@@ -297,28 +318,28 @@ func (r *Repo) Stats(ctx context.Context, from, to time.Time, contestID string,
 	defer rows.Close()
 
 	var (
-		calls      = map[string]struct{}{}
+		calls       = map[string]struct{}{}
-		entities   = map[int]struct{}{}
+		entities    = map[int]struct{}{}
-		modeC      = map[string]int{}
+		modeC       = map[string]int{}
-		bandC      = map[string]int{}
+		bandC       = map[string]int{}
-		bandCat    = map[string]*BandCategory{} // per band: cw/phone/data
+		bandCat     = map[string]*BandCategory{} // per band: cw/phone/data
-		opC        = map[string]int{}
+		opC         = map[string]int{}
-		stationC   = map[string]int{}
+		stationC    = map[string]int{}
-		contC      = map[string]int{}
+		contC       = map[string]int{}
-		entityC    = map[string]int{}
+		entityC     = map[string]int{}
-		yearC      = map[string]int{}
+		yearC       = map[string]int{}
 		monthC      = map[string]int{}
-		times       []entry     // every dated QSO (+ its operator), for the rate / gap maths
+		times       []entry // every dated QSO (+ its operator), for the rate / gap maths
 		first, last time.Time
 	)
 
 	for rows.Next() {
 		var (
-			call, band, mode, cont, country     sql.NullString
+			call, band, mode, cont, country sql.NullString
-			oper, station                        sql.NullString
+			oper, station                   sql.NullString
-			lotw, eqsl, paper                    sql.NullString
+			lotw, eqsl, paper               sql.NullString
-			dxcc                                 sql.NullInt64
+			dxcc                            sql.NullInt64
-			dateStr, contestID2                  sql.NullString
+			dateStr, contestID2             sql.NullString
 		)
 		if err := rows.Scan(&call, &dateStr, &band, &mode, &cont, &country, &dxcc,
 			&oper, &station, &lotw, &eqsl, &paper, &contestID2); err != nil {
@@ -492,11 +513,95 @@ func (r *Repo) Stats(ctx context.Context, from, to time.Time, contestID string,
 		ref = time.Now()
 	}
 	s.recentSeries(times, ref)
+	s.windowSeries(times, first, last, from, to)
 	s.ensureNonNil()
 
 	return s, nil
 }
 
+// maxActivityBuckets caps a chronological series. Beyond this the chart is a
+// grey smear and the payload grows for nothing; the series is dropped and the UI
+// steps up to a coarser bucket.
+const maxActivityBuckets = 750
+
+// windowSeries builds the chronological activity series ACROSS THE SELECTED
+// PERIOD, one per bucket size, plus the hour-of-day / weekday rhythm.
+//
+// The period is [from,to] when the caller filtered, else the span of the log —
+// the same window the period metrics use, so every card on the panel answers for
+// the same slice of time.
+func (s *Stats) windowSeries(times []entry, first, last, from, to time.Time) {
+	start, end := from, to
+	if start.IsZero() {
+		start = first
+	}
+	if end.IsZero() {
+		end = last
+	}
+	if start.IsZero() || end.IsZero() || end.Before(start) {
+		return
+	}
+	start, end = start.UTC(), end.UTC()
+
+	day := map[string]int{}
+	week := map[string]int{}
+	month := map[string]int{}
+	year := map[string]int{}
+	hour := make([]int, 24)
+	weekday := make([]int, 7)
+	for _, e := range times {
+		t := e.t.UTC()
+		if t.Before(start) || t.After(end) {
+			continue
+		}
+		day[t.Format("2006-01-02")]++
+		// ISO week, so a week is Monday→Sunday everywhere and the key sorts.
+		wy, wn := t.ISOWeek()
+		week[fmt.Sprintf("%04d-W%02d", wy, wn)]++
+		month[t.Format("2006-01")]++
+		year[t.Format("2006")]++
+		hour[t.Hour()]++
+		weekday[(int(t.Weekday())+6)%7]++ // Go weeks start on Sunday; shift to Monday
+	}
+
+	// Every bucket in the range is emitted, including the empty ones: a gap in
+	// the log is real information and must show as zero, not be closed up.
+	d0 := time.Date(start.Year(), start.Month(), start.Day(), 0, 0, 0, 0, time.UTC)
+	dEnd := time.Date(end.Year(), end.Month(), end.Day(), 0, 0, 0, 0, time.UTC)
+	if n := int(dEnd.Sub(d0).Hours()/24) + 1; n >= 1 && n <= maxActivityBuckets {
+		for d := d0; !d.After(dEnd); d = d.AddDate(0, 0, 1) {
+			s.ByDayWin = append(s.ByDayWin, Bucket{Key: d.Format("2006-01-02"), Count: day[d.Format("2006-01-02")]})
+		}
+	}
+	// Weeks: start on the Monday of the first week and step by 7 days.
+	w0 := d0.AddDate(0, 0, -((int(d0.Weekday()) + 6) % 7))
+	if n := int(dEnd.Sub(w0).Hours()/24)/7 + 1; n >= 1 && n <= maxActivityBuckets {
+		for w := w0; !w.After(dEnd); w = w.AddDate(0, 0, 7) {
+			wy, wn := w.ISOWeek()
+			key := fmt.Sprintf("%04d-W%02d", wy, wn)
+			s.ByWeekWin = append(s.ByWeekWin, Bucket{Key: key, Count: week[key]})
+		}
+	}
+	m0 := time.Date(start.Year(), start.Month(), 1, 0, 0, 0, 0, time.UTC)
+	mEnd := time.Date(end.Year(), end.Month(), 1, 0, 0, 0, 0, time.UTC)
+	if n := (mEnd.Year()-m0.Year())*12 + int(mEnd.Month()) - int(m0.Month()) + 1; n >= 1 && n <= maxActivityBuckets {
+		for m := m0; !m.After(mEnd); m = m.AddDate(0, 1, 0) {
+			s.ByMonthWin = append(s.ByMonthWin, Bucket{Key: m.Format("2006-01"), Count: month[m.Format("2006-01")]})
+		}
+	}
+	for y := start.Year(); y <= end.Year(); y++ {
+		k := fmt.Sprintf("%04d", y)
+		s.ByYearWin = append(s.ByYearWin, Bucket{Key: k, Count: year[k]})
+	}
+
+	for h := 0; h < 24; h++ {
+		s.ByHourOfDay = append(s.ByHourOfDay, Bucket{Key: fmt.Sprintf("%02dh", h), Count: hour[h]})
+	}
+	for i, name := range []string{"Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"} {
+		s.ByWeekday = append(s.ByWeekday, Bucket{Key: name, Count: weekday[i]})
+	}
+}
+
 // recentSeries builds the rolling chronological activity windows for the chart's
 // day/week/month/year selector, in UTC and anchored to `ref` (the period end when
 // filtered, else now). Real dates in order — today and the days before it — so the
@@ -569,6 +674,14 @@ func (s *Stats) ensureNonNil() {
 	if s.ByMonth == nil {
 		s.ByMonth = []Bucket{}
 	}
+	// A window series stays EMPTY on purpose when the bucket would be too fine
+	// for the period — but it must be [] and not null, so the UI can tell
+	// "too fine" from "not computed".
+	for _, p := range []*[]Bucket{&s.ByDayWin, &s.ByWeekWin, &s.ByMonthWin, &s.ByYearWin, &s.ByHourOfDay, &s.ByWeekday} {
+		if *p == nil {
+			*p = []Bucket{}
+		}
+	}
 	if s.Rate == nil {
 		s.Rate = []Bucket{}
 	}
@@ -588,9 +701,10 @@ func (s *Stats) ensureNonNil() {
 // log itself.
 //
 // Two rates are reported on purpose, because a single one always flatters:
-//   • AvgPerHour  = QSOs ÷ the WHOLE window — breaks included. The honest number.
+//   - AvgPerHour  = QSOs ÷ the WHOLE window — breaks included. The honest number.
-//   • AvgPerActive = QSOs ÷ the hours actually operated. Flatters, but tells you
+//   - AvgPerActive = QSOs ÷ the hours actually operated. Flatters, but tells you
 //     how fast you go when you ARE at the radio.
+//
 // Quoting only the second is how an 8-hour effort gets sold as a 48-hour score.
 func (s *Stats) periodMetrics(times []entry, from, to, first, last time.Time) {
 	if len(times) == 0 {
@@ -790,7 +904,6 @@ func sortedBuckets(m map[string]int, less func(a, b string) bool) []Bucket {
 	return out
 }
 
-
 // fillMonths emits EVERY month between the first and last QSO — zeros included —
 // so the trend line's x-axis is real time rather than "months that happen to have
 // data". A quiet decade must read as a decade at zero, not vanish.

internal/winkeyer/winkeyer.go

@@ -16,6 +16,7 @@ import (
 	"runtime/debug"
 	"strings"
 	"sync"
+	"sync/atomic"
 	"time"
 
 	"go.bug.st/serial"
@@ -179,7 +180,7 @@ func (m *Manager) Connect(cfg Config) error {
 	stop, done := m.stopRead, m.doneRead
 	m.mu.Unlock()
 
-	applog.Printf("winkeyer: connected on %s (firmware byte %d)", cfg.Port, ver)
+	applog.Printf("winkeyer: connected on %s — %s", cfg.Port, firmwareFamily(ver))
 	go m.readLoop(p, stop, done)
 
 	if err := m.applyConfig(cfg); err != nil {
@@ -398,10 +399,112 @@ func (m *Manager) write(b []byte) error {
 	if p == nil {
 		return fmt.Errorf("winkeyer: not connected")
 	}
+	traceTX(b)
 	_, err := p.Write(b)
 	return err
 }
 
+// ── Protocol trace ─────────────────────────────────────────────────────
+//
+// The WinKeyer command set differs between WK1, WK2 and WK3, and the failures
+// it produces are silent: the keyer accepts a byte meant for another command
+// and keys something odd. Guessing at that from a description ("it sends one
+// element then pauses ten seconds") is how a fix for one firmware breaks the
+// others, so the wire is made visible instead.
+//
+// Off by default — 1200 baud is slow but a long message would still fill the
+// log. Enabled per session from the CW settings panel.
+
+var traceOn atomic.Bool
+
+// SetTrace turns the byte-level protocol trace on or off.
+func SetTrace(on bool) {
+	traceOn.Store(on)
+	if on {
+		applog.Printf("winkeyer: protocol trace ON — every byte to and from the keyer is logged")
+	}
+}
+
+func hexBytes(b []byte) string {
+	var sb strings.Builder
+	for i, c := range b {
+		if i > 0 {
+			sb.WriteByte(' ')
+		}
+		fmt.Fprintf(&sb, "%02X", c)
+		if c >= 0x20 && c < 0x7F {
+			fmt.Fprintf(&sb, "(%c)", c)
+		}
+	}
+	return sb.String()
+}
+
+func traceTX(b []byte) {
+	if !traceOn.Load() || len(b) == 0 {
+		return
+	}
+	applog.Printf("winkeyer: TX %s %s", hexBytes(b), cmdName(b))
+}
+
+func traceRX(b []byte) {
+	if !traceOn.Load() || len(b) == 0 {
+		return
+	}
+	applog.Printf("winkeyer: RX %s", hexBytes(b))
+}
+
+// cmdName names the command a TX frame carries, so the trace can be read
+// without the datasheet open beside it.
+func cmdName(b []byte) string {
+	if len(b) == 0 || b[0] >= 0x20 {
+		return "(text)"
+	}
+	switch b[0] {
+	case 0x00:
+		return "admin"
+	case 0x01:
+		return "sidetone"
+	case 0x02:
+		return "set wpm"
+	case 0x03:
+		return "set weight"
+	case 0x04:
+		return "ptt lead/tail"
+	case 0x05:
+		return "setup speed pot"
+	case 0x06:
+		return "pause"
+	case 0x0A:
+		return "clear buffer"
+	case 0x0D:
+		return "farnsworth wpm"
+	case 0x0E:
+		return "set mode register"
+	case 0x11:
+		return "0x11 (WK2: key compensation / WK3: see datasheet)"
+	case 0x15:
+		return "request status"
+	default:
+		return fmt.Sprintf("cmd 0x%02X", b[0])
+	}
+}
+
+// firmwareFamily names the keyer generation from the byte returned by Host
+// Open. The version is what decides which command set applies, so it is spelled
+// out in the log rather than left as a bare number.
+func firmwareFamily(ver int) string {
+	switch {
+	case ver == 0:
+		return "no reply — the keyer did not answer Host Open"
+	case ver < 20:
+		return fmt.Sprintf("WK1 (v%d)", ver)
+	case ver < 30:
+		return fmt.Sprintf("WK2 (v%d)", ver)
+	default:
+		return fmt.Sprintf("WK3 (v%d)", ver)
+	}
+}
+
 // Disconnect sends Host Close and releases the port.
 func (m *Manager) Disconnect() {
 	m.mu.Lock()
@@ -473,6 +576,7 @@ func (m *Manager) readLoop(p serial.Port, stop, done chan struct{}) {
 			}
 			return
 		}
+		traceRX(buf[:n])
 		for i := 0; i < n; i++ {
 			b := buf[i]
 			switch {

main.go

@@ -112,6 +112,12 @@ func main() {
 		MinWidth:         1100,
 		MinHeight:        700,
 		WindowStartState: startState,
+		// No OS title bar: it was a dead 32-pixel band above a window that already
+		// has its own title strip. The app header takes over — it carries the drag
+		// region, the double-click-to-maximise, and the minimise/maximise/close
+		// buttons. Windows still draws the resize borders and honours Aero Snap,
+		// which is why the frame is dropped rather than the whole chrome.
+		Frameless: true,
 		// Start hidden and reveal only once the saved position has been applied and
 		// the DOM has painted (OnDomReady → domReady) — so the window appears
 		// already at its final size and position, with no post-launch jump.

telemetry.go

@@ -21,7 +21,7 @@ import (
 
 const (
 	// appVersion is stamped on every heartbeat (and could feed the About box).
-	appVersion = "0.21.5"
+	appVersion = "0.21.6"
 
 	// posthogHost is the PostHog ingestion endpoint. EU cloud by default; change
 	// to https://us.i.posthog.com for a US project.