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

@@ -30,6 +30,7 @@ import (
 	"hamlog/internal/backup"
 	"hamlog/internal/cabrillo"
 	"hamlog/internal/cat"
+	"hamlog/internal/catemu"
 	"hamlog/internal/clublog"
 	"hamlog/internal/cluster"
 	"hamlog/internal/contest"
@@ -917,6 +918,10 @@ func (a *App) startup(ctx context.Context) {
 			wruntime.EventsEmit(a.ctx, "cat:state", s)
 		}
 		a.emitRadioUDP(s)
+		// Feed the frequency to any amplifier we are pretending to be a radio
+		// for. Just two atomic stores per amp — the reply itself is built when
+		// the amp polls, so a fast-tuning VFO costs nothing here.
+		a.feedAmpBandFollow(s)
 		// Drive station relays by the current frequency/band (PstRotator-style
 		// automatic control). Cheap cached-flag check keeps this a no-op when the
 		// feature is off; when on, run off this callback so a slow relay board never
@@ -1512,6 +1517,74 @@ type dbPointer struct {
 
 func dbPointerPath(dataDir string) string { return filepath.Join(dataDir, "config.json") }
 
+// ── Portable paths ─────────────────────────────────────────────────────
+//
+// OpsLog is meant to be carried on a stick or copied between machines: the exe,
+// its data folder and the databases travel together. Storing "C:\OpsLog\data\
+// logbook.db" broke that — dropped into D:\OpsLog on another PC, the pointer
+// still named C:, and the app either lost the database or (worse) silently
+// created a NEW empty one at a C: path that happened to be creatable.
+//
+// So a path INSIDE the application folder is stored relative to it, and any
+// stored path is resolved against the CURRENT location at read time. Absolute
+// paths outside the folder (a deliberate choice — a synced folder, another
+// drive) keep working exactly as before: they are only re-rooted if they have
+// gone missing AND the same file exists in this install's data folder.
+
+// appDir is the folder the running exe lives in — the anchor for relative paths.
+func appDir() string {
+	exe, err := os.Executable()
+	if err != nil {
+		return ""
+	}
+	return filepath.Dir(exe)
+}
+
+// portablePath prepares a path for STORAGE: relative to the app folder when it
+// sits inside it, unchanged otherwise. Forward slashes so the value survives a
+// round trip through a folder copied between machines.
+func portablePath(p string) string {
+	p = strings.TrimSpace(p)
+	base := appDir()
+	if p == "" || base == "" || !filepath.IsAbs(p) {
+		return p
+	}
+	rel, err := filepath.Rel(base, p)
+	if err != nil || strings.HasPrefix(rel, "..") {
+		return p // outside the app folder — the user meant that exact place
+	}
+	return filepath.ToSlash(rel)
+}
+
+// resolvePath turns a stored path back into an absolute one for THIS install.
+// dataDir is where the app's own data lives, used for the re-rooting rescue.
+func resolvePath(dataDir, p string) string {
+	p = strings.TrimSpace(p)
+	if p == "" {
+		return ""
+	}
+	if !filepath.IsAbs(p) {
+		if base := appDir(); base != "" {
+			return filepath.Join(base, filepath.FromSlash(p))
+		}
+		return filepath.FromSlash(p)
+	}
+	if fileExists(p) {
+		return p
+	}
+	// An absolute path from another machine. Rescue it ONLY if a file of the same
+	// name is sitting in this install's data folder — that is the copied-folder
+	// case. Anything else is left alone so a genuinely-missing database is
+	// reported rather than silently replaced by an unrelated file.
+	if dataDir != "" {
+		if cand := filepath.Join(dataDir, filepath.Base(p)); fileExists(cand) {
+			applog.Printf("path: %q not found — using %q from this install (folder moved?)", p, cand)
+			return cand
+		}
+	}
+	return p
+}
+
 // ── Window geometry (window.json) ──────────────────────────────────────
 //
 // Remembered across restarts so the window reopens where and how you left it.
@@ -1564,6 +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)
 }
@@ -1578,7 +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 {
@@ -1631,12 +1729,16 @@ func readBootstrap(dataDir string) dbPointer {
 		return c
 	}
 	_ = json.Unmarshal(b, &c)
-	c.DBPath = strings.TrimSpace(c.DBPath)
+	// Stored relative when it lives inside the app folder, so the pointer follows
+	// the folder from C:OpsLog to D:OpsLog or to a stick.
+	c.DBPath = resolvePath(dataDir, c.DBPath)
+	c.DeletePending = resolvePath(dataDir, c.DeletePending)
 	return c
 }
 
 func writeBootstrap(dataDir string, c dbPointer) error {
-	c.DBPath = strings.TrimSpace(c.DBPath)
+	c.DBPath = portablePath(c.DBPath)
+	c.DeletePending = portablePath(c.DeletePending)
 	b, _ := json.MarshalIndent(c, "", "  ")
 	return os.WriteFile(dbPointerPath(dataDir), b, 0o644)
 }
@@ -1774,6 +1876,15 @@ func (a *App) connectLogbook(cfg profile.ProfileDB) (*sql.DB, string, error) {
 	if lp == "" {
 		return a.db, "sqlite", nil
 	}
+	// Resolve against THIS install before opening. Without it, a profile carried
+	// from C:\OpsLog to D:\OpsLog kept naming the C: path — and since db.Open
+	// CREATES what is missing, the operator silently got a brand-new empty
+	// logbook instead of an error. Their QSOs were still on disk, in the folder
+	// they had just copied.
+	if r := resolvePath(a.dataDir, lp); r != lp {
+		applog.Printf("logbook: profile path %q resolved to %q", lp, r)
+		lp = r
+	}
 	c, err := db.Open(lp)
 	if err != nil {
 		return nil, "", fmt.Errorf("open logbook %s: %w", lp, err)
@@ -5451,16 +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_rcvd":      "lotw_rcvd",
-	"eqsl_sent":      "eqsl_sent",
-	"eqsl_rcvd":      "eqsl_rcvd",
-	"qsl_sent":       "qsl_sent",
-	"qsl_rcvd":       "qsl_rcvd",
-	"qsl_via":        "qsl_via",
+	"lotw_sent":    "lotw_sent",
+	"lotw_rcvd":    "lotw_rcvd",
+	"eqsl_sent":    "eqsl_sent",
+	"eqsl_rcvd":    "eqsl_rcvd",
+	"qsl_sent":     "qsl_sent",
+	"qsl_rcvd":     "qsl_rcvd",
+	"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",
@@ -6455,7 +6583,7 @@ func (a *App) SaveCATSettings(s CATSettings) error {
 			return err
 		}
 	}
-	a.reloadCAT()
+	a.restartAsync("cat", a.reloadCAT)
 	return nil
 }
 
@@ -11678,12 +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
@@ -11955,6 +12105,10 @@ func (a *App) SaveProfile(p profile.Profile) (profile.Profile, error) {
 	if a.profiles == nil {
 		return profile.Profile{}, fmt.Errorf("profiles not initialized")
 	}
+	// Store a logbook that lives inside the app folder RELATIVE to it, so the
+	// profile keeps working when the folder is copied to another machine or
+	// another drive letter.
+	p.DB.Path = portablePath(p.DB.Path)
 	if err := a.profiles.Save(a.ctx, &p); err != nil {
 		return profile.Profile{}, err
 	}
@@ -12015,7 +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()
 }
 
@@ -12745,7 +12902,7 @@ func (a *App) SaveUltrabeamSettings(s UltrabeamSettings) error {
 			return err
 		}
 	}
-	a.startUltrabeam()
+	a.restartAsync("antenna", a.startUltrabeam)
 	return nil
 }
 
@@ -13318,7 +13475,7 @@ func (a *App) SavePGXLSettings(s PGXLSettings) error {
 			return err
 		}
 	}
-	a.startAmps()
+	a.restartAsync("amp", a.startAmps)
 	return nil
 }
 
@@ -13343,13 +13500,26 @@ type AmpConfig struct {
 	Port      int    `json:"port"`
 	ComPort   string `json:"com_port"`
 	Baud      int    `json:"baud"`
+
+	// Band-follow: an ACOM is the MASTER on its CAT/AUX connector — it polls a
+	// transceiver and changes band from the reply, so following OpsLog means
+	// answering those polls on a SECOND serial port (independent of the one used
+	// above for metering; both run at once). See internal/catemu.
+	FreqOut     bool   `json:"freq_out"`
+	FreqComPort string `json:"freq_com_port"`
+	FreqBaud    int    `json:"freq_baud"`
+	// FreqBroadcastMs > 0 also SENDS the frequency unprompted at that interval,
+	// for an amplifier that listens to a transceiver's CAT stream instead of
+	// polling it. 0 = answer polls only.
+	FreqBroadcastMs int `json:"freq_broadcast_ms"`
 }
 
 type ampInst struct {
-	cfg  AmpConfig
-	pgxl *powergenius.Client
-	spe  *spe.Client
-	acom *acom.Client
+	cfg    AmpConfig
+	pgxl   *powergenius.Client
+	spe    *spe.Client
+	acom   *acom.Client
+	catemu *catemu.Server // Kenwood-format responder for band-follow (ACOM)
 }
 
 func (i *ampInst) stopAll() {
@@ -13362,6 +13532,9 @@ func (i *ampInst) stopAll() {
 	if i.acom != nil {
 		i.acom.Stop()
 	}
+	if i.catemu != nil {
+		i.catemu.Stop()
+	}
 }
 
 // ampTypeLabel is the default display name for an amp type.
@@ -13438,7 +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
 }
 
@@ -13491,12 +13664,61 @@ func (a *App) startAmps() {
 				a.spe = inst.spe
 			}
 		}
+		// Band-follow on a SECOND serial port, for any amp that takes its band from
+		// a transceiver CAT link (ACOM and SPE both do). Independent of the control
+		// transport above, so metering and band-follow run at the same time.
+		if c.FreqOut && strings.TrimSpace(c.FreqComPort) != "" {
+			inst.catemu = catemu.New(catemu.Config{
+				ComPort: c.FreqComPort, Baud: c.FreqBaud,
+				BroadcastMs: c.FreqBroadcastMs,
+			}, applog.Printf)
+			if st := a.cat.State(); st.Connected {
+				inst.catemu.SetFrequency(st.FreqHz)
+				inst.catemu.SetMode(st.Mode)
+			}
+			inst.catemu.Start()
+			applog.Printf("amp %s: band-follow on %s at %d baud (Kenwood format, broadcast=%dms)",
+				c.Name, c.FreqComPort, c.FreqBaud, c.FreqBroadcastMs)
+		}
 		a.ampsMu.Lock()
 		a.ampInsts[c.ID] = inst
 		a.ampsMu.Unlock()
 	}
 }
 
+// feedAmpBandFollow pushes the rig's frequency/mode to every amplifier we are
+// emulating a transceiver for. Called on each CAT state change.
+//
+// The TX frequency is what the amp must follow: in split it has to be tuned
+// for where we transmit, not where we listen.
+func (a *App) feedAmpBandFollow(s cat.RigState) {
+	if !s.Connected || s.FreqHz <= 0 {
+		return
+	}
+	a.ampsMu.Lock()
+	defer a.ampsMu.Unlock()
+	for _, inst := range a.ampInsts {
+		if inst.catemu != nil {
+			inst.catemu.SetFrequency(s.FreqHz)
+			inst.catemu.SetMode(s.Mode)
+		}
+	}
+}
+
+// GetAmpBandFollowStatus returns the band-follow link state per amplifier id,
+// so the settings panel can show whether the amp is actually polling us.
+func (a *App) GetAmpBandFollowStatus() map[string]catemu.Status {
+	out := map[string]catemu.Status{}
+	a.ampsMu.Lock()
+	defer a.ampsMu.Unlock()
+	for id, inst := range a.ampInsts {
+		if inst.catemu != nil {
+			out[id] = inst.catemu.GetStatus()
+		}
+	}
+	return out
+}
+
 // AmpStatus is one amp's live state for the UI poll — exactly one of the
 // per-family payloads is set, per the amp's type.
 type AmpStatus struct {
@@ -13834,6 +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 +1,50 @@
 [
+  {
+    "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",
+    "en": [
+      "Column layouts (widths, order, hidden columns) now stick — five faults were undoing them.",
+      "Recent QSOs keeps a separate column layout in the Main tab and in its own tab — the pane is half as wide there.",
+      "ACOM and SPE amplifiers can follow OpsLog's frequency, on a second COM port (Settings → Amplifier).",
+      "Portable folder: moving OpsLog to another drive or PC (C:OpsLog → D:OpsLog) no longer loses the databases — paths inside the folder are now stored relative to it."
+    ],
+    "fr": [
+      "Les dispositions de colonnes (largeurs, ordre, colonnes masquées) tiennent enfin — cinq défauts les défaisaient.",
+      "Les QSO récents gardent une disposition de colonnes distincte dans l'onglet Principal et dans leur propre onglet — le volet y est deux fois moins large.",
+      "Les amplificateurs ACOM et SPE peuvent suivre la fréquence d'OpsLog, sur un second port COM (Réglages → Amplificateur).",
+      "Dossier portable : déplacer OpsLog sur un autre disque ou un autre PC (C:OpsLog → D:OpsLog) ne fait plus perdre les bases — les chemins internes au dossier sont désormais enregistrés relativement à celui-ci."
+    ]
+  },
   {
     "version": "0.21.4",
     "date": "2026-07-26",

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';
 
@@ -95,7 +95,7 @@ import { SendSpotModal, type RecentSpotQSO } from '@/components/SendSpotModal';
 import { WinkeyerPanel, type WKStatus, type WKMacro } from '@/components/WinkeyerPanel';
 import { RotorCompass } from '@/components/RotorCompass';
 import { writeUiPref } from '@/lib/uiPref';
-import { setGridPrefsProfile } from '@/lib/gridPrefs';
+import { setGridPrefsProfile, flushGridPrefs } from '@/lib/gridPrefs';
 import { DvkPanel, type DVKMsg, type DVKStat } from '@/components/DvkPanel';
 
 import { Button } from '@/components/ui/button';
@@ -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) ===
@@ -2356,6 +2404,14 @@ export default function App() {
     }).catch(() => {});
   }, []);
 
+  // A column resized in the last seconds before quitting must still reach the
+  // database: the DB write is debounced, so flush it on the way out.
+  useEffect(() => {
+    const flush = () => flushGridPrefs();
+    window.addEventListener('beforeunload', flush);
+    return () => { window.removeEventListener('beforeunload', flush); flush(); };
+  }, []);
+
   // Every setting is per-profile, so when the active profile changes the whole
   // main UI re-reads its config (station identity, lists, CAT, keyer). The Go
   // side reloads its managers; this keeps the React state in sync.
@@ -3284,6 +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]);
@@ -3317,6 +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;
     }
   }
 
@@ -3448,7 +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" />…
@@ -3502,8 +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={() => {
@@ -4147,7 +4214,7 @@ export default function App() {
             </div>
             <div className="flex-1 min-h-0 flex">
               <div className="flex-1 min-w-0 flex flex-col min-h-0">
-                <ClusterGrid rows={clusterRenderedRows as any} spotStatus={spotStatus} onSpotClick={handleSpotClick} />
+                <ClusterGrid key={`clg-${activeProfileId ?? 'x'}`} rows={clusterRenderedRows as any} spotStatus={spotStatus} onSpotClick={handleSpotClick} />
               </div>
               {clusterShowFilters && renderClusterFilters()}
             </div>
@@ -4156,7 +4223,7 @@ export default function App() {
       case 'worked':
         return (
           <div className="h-full w-full min-h-0 flex flex-col bg-card border border-border rounded-lg overflow-hidden">
-            <WorkedBeforeGrid wb={wbWithAwards as any} myGrid={station.my_grid} awardCols={awardCols} busy={wbBusy} currentCall={callsign} onRowDoubleClicked={(q) => openEdit(q.id as number)}
+            <WorkedBeforeGrid key={`wbg-${activeProfileId ?? 'x'}`} wb={wbWithAwards as any} myGrid={station.my_grid} awardCols={awardCols} busy={wbBusy} currentCall={callsign} onRowDoubleClicked={(q) => openEdit(q.id as number)}
               onUpdateFromCty={bulkUpdateFromCty} onUpdateFromQRZ={bulkUpdateFromQRZ} onUpdateFromClublog={bulkUpdateFromClublog}
               onSendTo={bulkSendTo} onSendRecording={bulkSendRecording} onSendEQSL={(ids) => setEqslQsoId(ids[0] ?? null)}
               onBulkEdit={openBulkEdit} onExportSelected={exportSelectedADIF} onExportSelectedFields={exportSelectedFields}
@@ -4192,6 +4259,11 @@ export default function App() {
           <div className="h-full w-full min-h-0 flex flex-col bg-card border border-border rounded-lg overflow-hidden">
             <RecentQSOsGrid
               key={`rqg-${activeProfileId ?? 'x'}`}
+              // Its OWN layout, separate from the full-width Recent QSOs tab.
+              // This pane is roughly half as wide, so it wants fewer columns and
+              // narrower ones; sharing one key meant whichever was opened last
+              // rewrote the other's widths.
+              storageKey="mainpane"
               rows={qsosWithAwards as any}
               myGrid={station.my_grid}
               total={total}
@@ -4222,7 +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>
@@ -4243,7 +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">
@@ -4611,6 +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>
       )}
@@ -5485,6 +5567,7 @@ export default function App() {
                 }
                 return (
                   <ClusterGrid
+                    key={`clg2-${activeProfileId ?? 'x'}`}
                     rows={rendered as any}
                     spotStatus={spotStatus}
                     onSpotClick={handleSpotClick}
@@ -5569,7 +5652,7 @@ export default function App() {
             </TabsContent>
 
             <TabsContent value="worked" className="mt-0 flex flex-col min-h-0 flex-1">
-              <WorkedBeforeGrid wb={wbWithAwards as any} myGrid={station.my_grid} awardCols={awardCols} busy={wbBusy} currentCall={callsign} onRowDoubleClicked={(q) => openEdit(q.id as number)}
+              <WorkedBeforeGrid key={`wbg-${activeProfileId ?? 'x'}`} wb={wbWithAwards as any} myGrid={station.my_grid} awardCols={awardCols} busy={wbBusy} currentCall={callsign} onRowDoubleClicked={(q) => openEdit(q.id as number)}
                 onUpdateFromCty={bulkUpdateFromCty} onUpdateFromQRZ={bulkUpdateFromQRZ} onUpdateFromClublog={bulkUpdateFromClublog} onSendTo={bulkSendTo} onSendRecording={bulkSendRecording}
                 onSendEQSL={(ids) => setEqslQsoId(ids[0] ?? null)}
                 onBulkEdit={openBulkEdit} onExportSelected={exportSelectedADIF} onExportSelectedFields={exportSelectedFields}

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']],
-  '80m':  [[3500, 3580, 'fill-success-muted'], [3580, 3600, 'fill-info-muted'],  [3600, 3800, 'fill-warning-muted']],
-  '60m':  [[5350, 5450, 'fill-warning-muted']],
-  '40m':  [[7000, 7040, 'fill-success-muted'], [7040, 7100, 'fill-info-muted'],  [7100, 7200, 'fill-warning-muted']],
-  '30m':  [[10100, 10130, 'fill-success-muted'], [10130, 10150, 'fill-info-muted']],
-  '20m':  [[14000, 14070, 'fill-success-muted'], [14070, 14100, 'fill-info-muted'], [14100, 14350, 'fill-warning-muted']],
-  '17m':  [[18068, 18095, 'fill-success-muted'], [18095, 18110, 'fill-info-muted'], [18110, 18168, 'fill-warning-muted']],
-  '15m':  [[21000, 21070, 'fill-success-muted'], [21070, 21150, 'fill-info-muted'], [21150, 21450, 'fill-warning-muted']],
-  '12m':  [[24890, 24915, 'fill-success-muted'], [24915, 24940, 'fill-info-muted'], [24940, 24990, 'fill-warning-muted']],
-  '10m':  [[28000, 28070, 'fill-success-muted'], [28070, 28300, 'fill-info-muted'], [28300, 29700, 'fill-warning-muted']],
-  '6m':   [[50000, 50100, 'fill-success-muted'], [50100, 50500, 'fill-warning-muted']],
+  '160m': [[1800, 1838, SEG_CW], [1838, 1840, SEG_DIGI], [1840, 2000, SEG_PHONE]],
+  '80m':  [[3500, 3580, SEG_CW], [3580, 3600, SEG_DIGI], [3600, 3800, SEG_PHONE]],
+  '60m':  [[5350, 5450, SEG_PHONE]],
+  '40m':  [[7000, 7040, SEG_CW], [7040, 7100, SEG_DIGI], [7100, 7200, SEG_PHONE]],
+  '30m':  [[10100, 10130, SEG_CW], [10130, 10150, SEG_DIGI]],
+  '20m':  [[14000, 14070, SEG_CW], [14070, 14100, SEG_DIGI], [14100, 14350, SEG_PHONE]],
+  '17m':  [[18068, 18095, SEG_CW], [18095, 18110, SEG_DIGI], [18110, 18168, SEG_PHONE]],
+  '15m':  [[21000, 21070, SEG_CW], [21070, 21150, SEG_DIGI], [21150, 21450, SEG_PHONE]],
+  '12m':  [[24890, 24915, SEG_CW], [24915, 24940, SEG_DIGI], [24940, 24990, SEG_PHONE]],
+  '10m':  [[28000, 28070, SEG_CW], [28070, 28300, SEG_DIGI], [28300, 29700, SEG_PHONE]],
+  '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' },
-  { id: 'lotw_rcvd',      label: 'bulk.fLotwRcvd',       group: 'QSL / upload', kind: 'status' },
-  { id: 'eqsl_sent',      label: 'bulk.fEqslSent',       group: 'QSL / upload', kind: 'status' },
-  { id: 'eqsl_rcvd',      label: 'bulk.fEqslRcvd',       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: 'qrz_upload',     label: 'bulk.fQrzUpload',      group: 'QSL / upload', kind: 'status' },
-  { id: 'clublog_upload', label: 'bulk.fClublogUpload',  group: 'QSL / upload', kind: 'status' },
-  { id: 'hrdlog_upload',  label: 'bulk.fHrdlogUpload',   group: 'QSL / upload', kind: 'status' },
-  { id: 'qsl_via',        label: 'bulk.fQslVia',         group: 'QSL / upload', kind: 'text' },
+  // One channel at a time, each with its status and its date, in the same order
+  // as the QSL Info tab. "Upload" was the wrong word for half of them — a paper
+  // QSL is not uploaded — so every entry now reads "<channel> sent/received
+  // 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_date',     label: 'bulk.fQslSentDate',     group: 'QSL / upload', kind: 'date' },
+  { id: 'qsl_rcvd',          label: 'bulk.fQslRcvd',         group: 'QSL / upload', kind: 'status' },
+  { id: 'qsl_rcvd_date',     label: 'bulk.fQslRcvdDate',     group: 'QSL / upload', kind: 'date' },
+  { 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/ClusterGrid.tsx

@@ -12,7 +12,7 @@ import {
 import { Button } from '@/components/ui/button';
 import { Checkbox } from '@/components/ui/checkbox';
 import { cleanSpotter, inferSpotMode, spotStatusKey } from '@/lib/spot';
-import { loadLocal, loadRemote, saveState, seedLocal } from '@/lib/gridPrefs';
+import { loadLocal, loadRemote, saveState, seedLocal, whenGridPrefsReady } from '@/lib/gridPrefs';
 import { useI18n } from '@/lib/i18n';
 
 type TFn = (key: string, vars?: Record<string, string | number>) => string;
@@ -371,10 +371,28 @@ export function ClusterGrid({ rows, spotStatus, onSpotClick }: Props) {
   // Localized column catalog — rebuilt when the language changes.
   const COL_CATALOG = useMemo(() => makeColCatalog(t), [t]);
 
-  const columnDefs = useMemo<ColDef<ClusterSpot>[]>(() => COL_CATALOG.map((c) => {
-    const { group: _g, label: _l, defaultVisible, ...rest } = c;
-    return { ...rest, hide: !defaultVisible };
-  }), [COL_CATALOG]);
+  // A rebuild makes AG Grid re-apply every colDef hide/width DEFAULT and fire the
+  // matching column events. Without this guard those events were persisted, so a
+  // single language change overwrote the saved cluster layout — in the cache AND
+  // in the database, with nothing to restore from.
+  const restoringRef = useRef(true);
+
+  const columnDefs = useMemo<ColDef<ClusterSpot>[]>(() => {
+    restoringRef.current = true;
+    return COL_CATALOG.map((c) => {
+      const { group: _g, label: _l, defaultVisible, ...rest } = c;
+      return { ...rest, hide: !defaultVisible };
+    });
+  }, [COL_CATALOG]);
+
+  // Re-apply the saved state after every rebuild, then re-enable saving.
+  useEffect(() => {
+    const api = gridRef.current?.api;
+    const local = loadLocal(COL_STATE_KEY);
+    if (api && local) api.applyColumnState({ state: local as ColumnState[], applyOrder: true });
+    const tm = window.setTimeout(() => { restoringRef.current = false; }, 0);
+    return () => window.clearTimeout(tm);
+  }, [columnDefs]);
 
   const defaultColDef = useMemo<ColDef>(() => ({
     sortable: true, resizable: true, filter: true, suppressMovable: false,
@@ -394,17 +412,20 @@ export function ClusterGrid({ rows, spotStatus, onSpotClick }: Props) {
     gridRef.current?.api?.refreshCells({ force: true });
   }, [spotStatus]);
 
-  function onGridReady(e: GridReadyEvent) {
+  // Restore AFTER the profile scope is known — this grid has no key= remount to
+  // save it from reading the wrong (unscoped) cache key at first paint.
+  async function onGridReady(e: GridReadyEvent) {
+    await whenGridPrefsReady();
     const local = loadLocal(COL_STATE_KEY);
     if (local) e.api.applyColumnState({ state: local as ColumnState[], applyOrder: true });
-    loadRemote(COL_STATE_KEY).then((remote) => {
-      if (remote && !local) {
-        e.api.applyColumnState({ state: remote as ColumnState[], applyOrder: true });
-        seedLocal(COL_STATE_KEY, remote);
-      }
-    });
+    const remote = await loadRemote(COL_STATE_KEY);
+    if (remote && !local) {
+      e.api.applyColumnState({ state: remote as ColumnState[], applyOrder: true });
+      seedLocal(COL_STATE_KEY, remote);
+    }
   }
   const saveColumnState = useCallback(() => {
+    if (restoringRef.current) return; // ignore the events fired by a column rebuild
     const state = gridRef.current?.api?.getColumnState();
     if (state) saveState(COL_STATE_KEY, state);
   }, []);

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/QSLManagerModal.tsx

@@ -427,6 +427,10 @@ export function QSLManagerPanel({ onEditQSO }: { onEditQSO?: (id: number) => voi
             // drives which QSOs the apply-form below updates; a search selects all.
             <div className="flex flex-col h-full min-h-0 -mx-3 -my-2">
               <RecentQSOsGrid
+                // Its OWN column layout. Without a storageKey this fell back to
+                // the main log's key, so every resize or hidden column here
+                // silently rewrote the Recent QSOs layout, and vice versa.
+                storageKey="qslmgr.paper"
                 rows={paperRows as any}
                 total={paperRows.length}
                 selectAllSignal={paperSelAllSig}
@@ -532,6 +536,7 @@ export function QSLManagerPanel({ onEditQSO }: { onEditQSO?: (id: number) => voi
         ) : (
           <div className="flex flex-col h-full min-h-0 -mx-3 -my-2">
             <RecentQSOsGrid
+              storageKey="qslmgr.upload"
               rows={rows as any}
               total={rows.length}
               selectAllSignal={uploadSelAllSig}

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.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.dateSent')}</Label><AdifDateInput value={val(def.sentDate)} onChange={(v) => put(def.sentDate, v)} /></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/RecentQSOsGrid.tsx

@@ -521,7 +521,13 @@ export function RecentQSOsGrid({ rows, myGrid, selectAllSignal, selectRowSignal,
     // Re-enable saving once AG Grid has settled the column events from the rebuild.
     const t = window.setTimeout(() => { restoringRef.current = false; }, 0);
     return () => window.clearTimeout(t);
-  }, [awardCols, awardShown]);
+    // Keyed on columnDefs ITSELF, not on the reasons it was rebuilt. Listing the
+    // causes here (awardCols/awardShown) missed the others — switching the UI
+    // language rebuilds the memo through `t`, which set restoringRef and left it
+    // set, so every column change for the rest of the session was silently
+    // discarded and the layout reverted on reload. Any future dependency of the
+    // memo is now covered for free.
+  }, [columnDefs]);
 
   function handleRowDoubleClicked(e: RowDoubleClickedEvent<QSOForm>) {
     if (e.data && onRowDoubleClicked) onRowDoubleClicked(e.data);

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,
@@ -627,7 +628,10 @@ function ADIFMonitorPanel() {
 }
 
 // AmpUI mirrors the backend AmpConfig — one configured amplifier.
-type AmpUI = { id: string; name: string; enabled: boolean; type: string; transport: string; host: string; port: number; com_port: string; baud: number };
+type AmpUI = { id: string; name: string; enabled: boolean; type: string; transport: string; host: string; port: number; com_port: string; baud: number;
+  // Band-follow (ACOM): a SECOND serial port on which OpsLog answers the amp's
+  // frequency polls, pretending to be a Kenwood-format transceiver.
+  freq_out?: boolean; freq_com_port?: string; freq_baud?: number; freq_broadcast_ms?: number };
 
 // RelayAutoPanel configures automatic control of the Station Control relay boards
 // from the rig's frequency / band (PstRotator-style). Each relay carries one rule:
@@ -1090,6 +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) ──
@@ -2811,6 +2817,7 @@ export function SettingsModal({ onClose, onSaved, initialSection, onMainPaneChan
     });
     const addAmp = () => setAmps((l) => [...l, {
       id: '', name: '', enabled: true, type: 'spe13', transport: 'tcp', host: '', port: 9008, com_port: '', baud: 115200,
+      freq_out: false, freq_com_port: '', freq_baud: 9600, freq_broadcast_ms: 0,
     }]);
     return (
       <>
@@ -2927,6 +2934,62 @@ export function SettingsModal({ onClose, onSaved, initialSection, onMainPaneChan
                   </div>
                 )}
 
+                {/* Band-follow, for any amp that takes its band from a transceiver
+                    CAT link (ACOM and SPE both do) — never PowerGenius, which is
+                    driven over its network protocol. A SECOND serial port,
+                    separate from the metering one above. */}
+                {!isPGXL && (
+                  <div className="border-t border-border/60 pt-3 space-y-3">
+                    <label className="flex items-center gap-2 text-sm cursor-pointer">
+                      <Checkbox
+                        checked={!!amp.freq_out}
+                        onCheckedChange={(c) => patchAmp(i, { freq_out: !!c })}
+                      />
+                      {t('amp.freqOut')}
+                    </label>
+                    {amp.freq_out && (
+                      <>
+                        <div className="grid grid-cols-3 gap-3">
+                          <div className="space-y-1 col-span-2">
+                            <Label>{t('amp.freqPort')}</Label>
+                            <div className="flex items-center gap-2">
+                              <Select value={amp.freq_com_port || '_'} onValueChange={(v) => patchAmp(i, { freq_com_port: v === '_' ? '' : v })}>
+                                <SelectTrigger className="h-9 flex-1"><SelectValue placeholder="— COM —" /></SelectTrigger>
+                                <SelectContent>
+                                  {wkPorts.length === 0 && <SelectItem value="_" disabled>No ports found</SelectItem>}
+                                  {wkPorts.map((p) => <SelectItem key={p} value={p}>{p}</SelectItem>)}
+                                </SelectContent>
+                              </Select>
+                              <Button size="sm" variant="outline" className="h-9" onClick={() => ListSerialPorts().then((p) => setWkPorts((p ?? []) as string[])).catch(() => {})}>
+                                <ArrowDown className="size-3.5 rotate-90" />
+                              </Button>
+                            </div>
+                          </div>
+                          <div className="space-y-1">
+                            <Label>Baud</Label>
+                            <Input type="number" min={1200} value={amp.freq_baud ?? 9600}
+                              onChange={(e) => patchAmp(i, { freq_baud: parseInt(e.target.value) || 9600 })} className="font-mono" />
+                          </div>
+                        </div>
+                        <div className="grid grid-cols-3 gap-3">
+                          <div className="space-y-1 col-span-2">
+                            <Label>{t('amp.freqBroadcast')}</Label>
+                            <Select value={String(amp.freq_broadcast_ms ?? 0)} onValueChange={(v) => patchAmp(i, { freq_broadcast_ms: parseInt(v) })}>
+                              <SelectTrigger className="h-9"><SelectValue /></SelectTrigger>
+                              <SelectContent>
+                                <SelectItem value="0">{t('amp.freqPollOnly')}</SelectItem>
+                                <SelectItem value="500">{t('amp.freqEvery', { ms: 500 })}</SelectItem>
+                                <SelectItem value="1000">{t('amp.freqEvery', { ms: 1000 })}</SelectItem>
+                              </SelectContent>
+                            </Select>
+                          </div>
+                        </div>
+                        <p className="text-[10px] text-muted-foreground">{t('amp.freqHint')}</p>
+                      </>
+                    )}
+                  </div>
+                )}
+
                 {amp.enabled && amp.id && <AmpStatusCard id={amp.id} />}
                 {!isPGXL && !isACOM && (
                   <p className="text-[10px] text-muted-foreground">
@@ -3303,6 +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 series = g === 'day' ? stats.by_hour : g === 'week' ? stats.by_day7 : g === 'month' ? stats.by_day30 : g === 'year' ? stats.by_month12 : [];
+  const [g, setG] = useState<Gran | 'auto'>('auto');
+  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'
-        ? <AreaTrend data={stats.by_month} empty={empty} />
+      {/* Many buckets read better as a filled trend than as a forest of bars. */}
+      {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/components/WorkedBeforeGrid.tsx

@@ -15,7 +15,7 @@ import { Badge } from '@/components/ui/badge';
 import type { WorkedBeforeView, QSOForm } from '@/types';
 import { makeColCatalog, GROUP_ORDER, groupLabel } from './RecentQSOsGrid';
 import { QSOContextMenu, type QSOMenuState } from './QSOContextMenu';
-import { loadLocal, loadRemote, saveState, seedLocal } from '@/lib/gridPrefs';
+import { loadLocal, loadRemote, saveState, seedLocal, whenGridPrefsReady } from '@/lib/gridPrefs';
 import { useI18n } from '@/lib/i18n';
 
 ModuleRegistry.registerModules([AllCommunityModule]);
@@ -113,15 +113,18 @@ export function WorkedBeforeGrid({ wb, myGrid, busy, currentCall, onRowDoubleCli
     sortable: true, resizable: true, filter: true, suppressMovable: false,
   }), []);
 
-  function onGridReady(e: GridReadyEvent) {
+  // Restore AFTER the profile scope is known: this grid has no key= remount to
+  // save it from reading the wrong (unscoped) cache key at first paint, so it
+  // used to miss the cache every time and then save under the scoped key.
+  async function onGridReady(e: GridReadyEvent) {
+    await whenGridPrefsReady();
     const local = loadLocal(COL_STATE_KEY);
     if (local) e.api.applyColumnState({ state: local as ColumnState[], applyOrder: true });
-    loadRemote(COL_STATE_KEY).then((remote) => {
-      if (remote && !local) {
-        e.api.applyColumnState({ state: remote as ColumnState[], applyOrder: true });
-        seedLocal(COL_STATE_KEY, remote);
-      }
-    });
+    const remote = await loadRemote(COL_STATE_KEY);
+    if (remote && !local) {
+      e.api.applyColumnState({ state: remote as ColumnState[], applyOrder: true });
+      seedLocal(COL_STATE_KEY, remote);
+    }
   }
   const saveColumnState = useCallback(() => {
     if (restoringRef.current) return; // ignore events fired by a column rebuild
@@ -137,7 +140,9 @@ export function WorkedBeforeGrid({ wb, myGrid, busy, currentCall, onRowDoubleCli
     if (api && local) api.applyColumnState({ state: local as ColumnState[], applyOrder: true });
     const t = window.setTimeout(() => { restoringRef.current = false; }, 0);
     return () => window.clearTimeout(t);
-  }, [awardCols]);
+    // columnDefs itself, not the reasons it was rebuilt — see the same note in
+    // RecentQSOsGrid: a language change rebuilt the memo and left saving off.
+  }, [columnDefs]);
 
   function isColVisible(colId: string): boolean {
     const col = gridRef.current?.api?.getColumn(colId);

frontend/src/lib/gridPrefs.ts

@@ -19,6 +19,26 @@ let lsScope = '';
 // changes so each profile keeps its own column layout / widths.
 export function setGridPrefsProfile(id: number | string | null | undefined): void {
   lsScope = id == null || id === '' ? '' : `p${id}.`;
+  markReady();
+}
+
+// The active profile is only known after an async call, but the grids mount and
+// read their state on the first paint. A grid that read before the scope was set
+// looked up the UNSCOPED cache key (always a miss) and then saved under the
+// scoped one — so its layout could never be restored, only rewritten. Grids now
+// wait for this instead of racing it.
+//
+// The 5 s fallback matters: if the profile lookup fails outright, the grids must
+// still come up with whatever the unscoped cache holds rather than hang with no
+// columns restored.
+let markReady: () => void = () => {};
+const gridPrefsReady = new Promise<void>((resolve) => {
+  markReady = resolve;
+  setTimeout(resolve, 5000);
+});
+
+export function whenGridPrefsReady(): Promise<void> {
+  return gridPrefsReady;
 }
 
 // lsKey scopes ONLY the localStorage cache key. The DB key passed to
@@ -40,22 +60,66 @@ export function loadLocal(key: string): any[] | null {
 }
 
 // loadRemote pulls the portable copy from the DB (null if none / unset).
-export async function loadRemote(key: string): Promise<any[] | null> {
-  try {
-    const v = await GetUIPref(key);
-    const parsed = v ? JSON.parse(v) : null;
-    return Array.isArray(parsed) ? parsed : null;
-  } catch {
-    return null;
+//
+// GetUIPref returns an ERROR — not "" — while the settings store is still
+// coming up and not yet scoped to the active profile. Treating that as "no
+// preference" was the silent data-loss path: the grid rendered defaults and the
+// first column event then wrote those defaults over the good saved copy. So
+// retry for a few seconds instead, and only give up on a real absence.
+export async function loadRemote(key: string, attempts = 10): Promise<any[] | null> {
+  for (let i = 0; i < attempts; i++) {
+    try {
+      const v = await GetUIPref(key);
+      const parsed = v ? JSON.parse(v) : null;
+      return Array.isArray(parsed) ? parsed : null;
+    } catch {
+      // Not ready yet (or a parse failure on a corrupt value — one more read
+      // costs nothing). 300 ms × 10 covers a slow startup without hanging.
+      await new Promise((r) => setTimeout(r, 300));
+    }
   }
+  return null;
 }
 
 // saveState write-throughs to both the cache and the DB (fire-and-forget). Only
 // the cache key is profile-scoped; the DB key is scoped by the backend.
+// The DB write is DEBOUNCED. AG-Grid emits a column-resized event per drag
+// frame, so dragging one border used to fire dozens of settings writes; the
+// cache write stays synchronous so nothing is lost if the window closes.
+const pendingDB = new Map<string, string>();
+const dbTimers = new Map<string, number>();
+
 export function saveState(key: string, state: any[]) {
   const json = JSON.stringify(state);
   try { localStorage.setItem(lsKey(key), json); } catch { /* quota / private mode */ }
-  SetUIPref(key, json).catch(() => { /* DB unavailable — cache still holds it */ });
+  pendingDB.set(key, json);
+  const prev = dbTimers.get(key);
+  if (prev) clearTimeout(prev);
+  dbTimers.set(key, window.setTimeout(() => flushOne(key), 400));
+}
+
+function flushOne(key: string) {
+  const json = pendingDB.get(key);
+  dbTimers.delete(key);
+  if (json == null) return;
+  pendingDB.delete(key);
+  SetUIPref(key, json).catch(() => {
+    // The store may not be scoped yet at startup. Keep the value and try once
+    // more shortly — dropping it here is how a fresh profile ended up with no
+    // portable copy at all.
+    pendingDB.set(key, json);
+    if (!dbTimers.has(key)) dbTimers.set(key, window.setTimeout(() => flushOne(key), 2000));
+  });
+}
+
+// flushGridPrefs writes any debounced state immediately. Call it when the app is
+// about to close so a resize made in the last moments still reaches the DB.
+export function flushGridPrefs() {
+  for (const key of Array.from(pendingDB.keys())) {
+    const t = dbTimers.get(key);
+    if (t) clearTimeout(t);
+    flushOne(key);
+  }
 }
 
 // seedLocal writes a value into the cache without touching the DB (used after

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 = '0.21.4';
+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

@@ -6,6 +6,7 @@ import {main} from '../models';
 import {cat} from '../models';
 import {profile} from '../models';
 import {acom} from '../models';
+import {catemu} from '../models';
 import {antgenius} from '../models';
 import {award} from '../models';
 import {awardref} from '../models';
@@ -344,6 +345,8 @@ export function GetActiveProfile():Promise<profile.Profile>;
 
 export function GetAlertEmailTo():Promise<string>;
 
+export function GetAmpBandFollowStatus():Promise<Record<string, catemu.Status>>;
+
 export function GetAmpStatuses():Promise<Array<main.AmpStatus>>;
 
 export function GetAmplifiers():Promise<Array<main.AmpConfig>>;
@@ -904,6 +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

@@ -638,6 +638,10 @@ export function GetAlertEmailTo() {
   return window['go']['main']['App']['GetAlertEmailTo']();
 }
 
+export function GetAmpBandFollowStatus() {
+  return window['go']['main']['App']['GetAmpBandFollowStatus']();
+}
+
 export function GetAmpStatuses() {
   return window['go']['main']['App']['GetAmpStatuses']();
 }
@@ -1758,6 +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

@@ -1442,6 +1442,10 @@ export namespace main {
 	    port: number;
 	    com_port: string;
 	    baud: number;
+	    freq_out: boolean;
+	    freq_com_port: string;
+	    freq_baud: number;
+	    freq_broadcast_ms: number;
 	
 	    static createFrom(source: any = {}) {
 	        return new AmpConfig(source);
@@ -1458,6 +1462,10 @@ export namespace main {
 	        this.port = source["port"];
 	        this.com_port = source["com_port"];
 	        this.baud = source["baud"];
+	        this.freq_out = source["freq_out"];
+	        this.freq_com_port = source["freq_com_port"];
+	        this.freq_baud = source["freq_baud"];
+	        this.freq_broadcast_ms = source["freq_broadcast_ms"];
 	    }
 	}
 	export class AmpStatus {
@@ -4196,6 +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;
@@ -4240,6 +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/catemu/catemu.go

@@ -0,0 +1,376 @@
+// Package catemu emulates a transceiver on a serial port so a device that
+// POLLS a radio for its frequency can follow OpsLog instead.
+//
+// This exists for the ACOM amplifiers: on their CAT/AUX connector the amp is
+// the master — it polls the transceiver every few hundred milliseconds and
+// changes band only when it gets a valid reply. There is no way to push a
+// frequency to it, so following OpsLog means answering its polls.
+//
+// The dialect is ACOM "command set 5" (Kenwood / Elecraft RS-232, also what
+// Flex and SunSDR users select): plain ASCII commands terminated by ';'. It is
+// the simplest of the five sets by a wide margin, which is why the SDC utility
+// uses it to steer an ACOM with no physical radio attached.
+//
+// Only the handful of commands an amp actually asks for are implemented:
+//
+//	FA;  → FA00014025000;   TX frequency, 11 digits, Hz
+//	FB;  → same (sub VFO — amps poll it on some firmware)
+//	IF;  → the 38-character TS-2000 status frame
+//	ID;  → ID019;  (TS-2000 — a known model keeps the amp from timing out)
+//
+// Anything else is ignored rather than answered: a wrong-length reply is worse
+// than none, because it desynchronises the amp's parser for the next poll.
+package catemu
+
+import (
+	"fmt"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"go.bug.st/serial"
+)
+
+// Config is the serial port the amplifier's CAT/AUX cable is wired to. This is
+// a SECOND port, independent of the one used for the amp's own remote/metering
+// protocol — both run at the same time on an ACOM.
+type Config struct {
+	ComPort string
+	Baud    int
+
+	// BroadcastMs > 0 also sends the frequency UNPROMPTED every that many
+	// milliseconds. Some amplifiers do not poll at all: they sit in parallel on
+	// the radio↔PC CAT line and read whatever goes past. Such an amp would never
+	// hear us, since answering polls means speaking only when spoken to.
+	// 0 = answer polls only.
+	BroadcastMs int
+}
+
+// Status is what the settings panel shows about the link.
+type Status struct {
+	Enabled   bool   `json:"enabled"`
+	Connected bool   `json:"connected"`
+	Port      string `json:"port"`
+	Polls     int64  `json:"polls"`    // replies sent since start
+	LastCmd   string `json:"last_cmd"` // last command received, e.g. "FA;"
+	LastAt    string `json:"last_at"`  // RFC3339 of the last poll, "" if none
+	FreqHz    int64  `json:"freq_hz"`  // what we are currently answering
+	Error     string `json:"error"`    // last open/IO failure
+}
+
+// Server answers a polling amplifier on one serial port.
+type Server struct {
+	cfg Config
+
+	mu     sync.Mutex
+	port   serial.Port
+	status Status
+
+	freqHz atomic.Int64
+	mode   atomic.Value // string, ADIF-ish ("CW", "USB"…)
+
+	stop chan struct{}
+	done chan struct{}
+
+	logf func(string, ...any)
+}
+
+// New builds a server. Nothing is opened until Start.
+func New(cfg Config, logf func(string, ...any)) *Server {
+	if cfg.Baud <= 0 {
+		cfg.Baud = 9600
+	}
+	s := &Server{cfg: cfg, logf: logf}
+	s.mode.Store("")
+	s.status.Port = cfg.ComPort
+	return s
+}
+
+func (s *Server) log(format string, args ...any) {
+	if s.logf != nil {
+		s.logf(format, args...)
+	}
+}
+
+// SetFrequency updates the frequency reported to the amplifier. Called from the
+// CAT state callback; safe from any goroutine and never blocks — the serve loop
+// reads the value when a poll arrives, so a fast-tuning VFO costs nothing.
+func (s *Server) SetFrequency(hz int64) { s.freqHz.Store(hz) }
+
+// SetMode updates the mode digit in the IF frame. Optional: the amp only cares
+// about the frequency, but a coherent frame avoids odd firmware behaviour.
+func (s *Server) SetMode(mode string) { s.mode.Store(strings.ToUpper(strings.TrimSpace(mode))) }
+
+// Start opens the port and serves polls until Stop. It returns immediately;
+// a port that is missing or busy is retried every 5 s, because the amplifier is
+// often powered on after the software.
+func (s *Server) Start() {
+	s.stop = make(chan struct{})
+	s.done = make(chan struct{})
+	go s.run()
+}
+
+// Stop closes the port and waits for the loop to end.
+func (s *Server) Stop() {
+	if s.stop == nil {
+		return
+	}
+	close(s.stop)
+	s.mu.Lock()
+	if s.port != nil {
+		_ = s.port.Close()
+		s.port = nil
+	}
+	s.mu.Unlock()
+	<-s.done
+	s.stop = nil
+}
+
+// GetStatus returns a snapshot for the UI.
+func (s *Server) GetStatus() Status {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	st := s.status
+	st.Enabled = true
+	st.FreqHz = s.freqHz.Load()
+	return st
+}
+
+func (s *Server) setErr(msg string) {
+	s.mu.Lock()
+	s.status.Error = msg
+	s.status.Connected = false
+	s.mu.Unlock()
+}
+
+func (s *Server) run() {
+	defer close(s.done)
+	for {
+		select {
+		case <-s.stop:
+			return
+		default:
+		}
+		if err := s.open(); err != nil {
+			s.setErr(err.Error())
+			s.log("catemu: %s open failed: %v (retry in 5s)", s.cfg.ComPort, err)
+			select {
+			case <-s.stop:
+				return
+			case <-time.After(5 * time.Second):
+			}
+			continue
+		}
+		s.serve()
+	}
+}
+
+func (s *Server) open() error {
+	if strings.TrimSpace(s.cfg.ComPort) == "" {
+		return fmt.Errorf("no COM port configured")
+	}
+	p, err := serial.Open(s.cfg.ComPort, &serial.Mode{
+		BaudRate: s.cfg.Baud,
+		DataBits: 8,
+		Parity:   serial.NoParity,
+		StopBits: serial.OneStopBit,
+	})
+	if err != nil {
+		return err
+	}
+	// A short read timeout keeps the loop responsive to Stop while idle: the amp
+	// may poll only every few hundred ms, and a blocking read would hold the
+	// port open past shutdown.
+	_ = p.SetReadTimeout(200 * time.Millisecond)
+	s.mu.Lock()
+	s.port = p
+	s.status.Connected = true
+	s.status.Error = ""
+	s.mu.Unlock()
+	s.log("catemu: serving Kenwood-format polls on %s at %d baud", s.cfg.ComPort, s.cfg.Baud)
+	return nil
+}
+
+// broadcast sends an unsolicited FA frame at the configured interval, for an
+// amplifier that listens to the CAT line rather than polling it. It stops when
+// the port is closed or Stop is called.
+func (s *Server) broadcast(stopServe <-chan struct{}) {
+	if s.cfg.BroadcastMs <= 0 {
+		return
+	}
+	// Below ~100 ms this is pure noise on the wire; the band only ever changes
+	// at human speed.
+	every := time.Duration(s.cfg.BroadcastMs) * time.Millisecond
+	if every < 100*time.Millisecond {
+		every = 100 * time.Millisecond
+	}
+	t := time.NewTicker(every)
+	defer t.Stop()
+	for {
+		select {
+		case <-s.stop:
+			return
+		case <-stopServe:
+			return
+		case <-t.C:
+			hz := s.freqHz.Load()
+			if hz <= 0 {
+				continue // nothing known yet — say nothing rather than "0 Hz"
+			}
+			s.mu.Lock()
+			p := s.port
+			s.mu.Unlock()
+			if p == nil {
+				return
+			}
+			if _, err := p.Write([]byte(fmt.Sprintf("FA%011d;", hz))); err != nil {
+				s.setErr(err.Error())
+				return
+			}
+		}
+	}
+}
+
+// serve reads commands until the port fails or Stop is called.
+func (s *Server) serve() {
+	// The broadcaster shares this port and must die with it, or it would write
+	// into a closed handle after a reopen.
+	stopServe := make(chan struct{})
+	defer close(stopServe)
+	go s.broadcast(stopServe)
+
+	buf := make([]byte, 64)
+	var acc []byte
+	for {
+		select {
+		case <-s.stop:
+			return
+		default:
+		}
+		s.mu.Lock()
+		p := s.port
+		s.mu.Unlock()
+		if p == nil {
+			return
+		}
+		n, err := p.Read(buf)
+		if err != nil {
+			s.setErr(err.Error())
+			s.log("catemu: %s read failed: %v — reopening", s.cfg.ComPort, err)
+			s.mu.Lock()
+			if s.port != nil {
+				_ = s.port.Close()
+				s.port = nil
+			}
+			s.mu.Unlock()
+			return
+		}
+		if n == 0 {
+			continue
+		}
+		acc = append(acc, buf[:n]...)
+		// Commands are ';'-terminated; handle every complete one in the buffer.
+		for {
+			i := indexByte(acc, ';')
+			if i < 0 {
+				break
+			}
+			cmd := strings.ToUpper(strings.TrimSpace(string(acc[:i])))
+			acc = acc[i+1:]
+			s.handle(p, cmd)
+		}
+		// A runaway buffer means we are seeing something that is not this
+		// protocol (wrong baud, or the amp's other port); drop it rather than
+		// grow without bound.
+		if len(acc) > 512 {
+			acc = acc[:0]
+		}
+	}
+}
+
+func indexByte(b []byte, c byte) int {
+	for i := range b {
+		if b[i] == c {
+			return i
+		}
+	}
+	return -1
+}
+
+// handle answers one command. cmd has no trailing ';'.
+func (s *Server) handle(p serial.Port, cmd string) {
+	hz := s.freqHz.Load()
+	var reply string
+	switch {
+	case cmd == "FA" || cmd == "FB":
+		reply = fmt.Sprintf("%s%011d;", cmd, hz)
+	case cmd == "IF":
+		reply = s.ifFrame(hz)
+	case cmd == "ID":
+		reply = "ID019;" // TS-2000
+	default:
+		// Unknown or a SET command (FA00014025000;) — silently ignored: an amp
+		// never sets our frequency, and answering the wrong length would break
+		// its parser for the following poll.
+		return
+	}
+	if _, err := p.Write([]byte(reply)); err != nil {
+		s.setErr(err.Error())
+		return
+	}
+	s.mu.Lock()
+	s.status.Polls++
+	s.status.LastCmd = cmd + ";"
+	s.status.LastAt = time.Now().Format(time.RFC3339)
+	s.mu.Unlock()
+}
+
+// modeDigit maps our mode name to the Kenwood mode digit used in IF.
+func (s *Server) modeDigit() byte {
+	m, _ := s.mode.Load().(string)
+	switch {
+	case strings.HasPrefix(m, "CW"):
+		return '3'
+	case strings.HasPrefix(m, "LSB"):
+		return '1'
+	case strings.HasPrefix(m, "USB"), strings.HasPrefix(m, "SSB"):
+		return '2'
+	case strings.HasPrefix(m, "FM"):
+		return '4'
+	case strings.HasPrefix(m, "AM"):
+		return '5'
+	case m == "RTTY", strings.HasPrefix(m, "FSK"):
+		return '6'
+	case m == "":
+		return '2'
+	default:
+		// Data modes (FT8, PSK…) ride on SSB as far as an amplifier cares.
+		return '2'
+	}
+}
+
+// ifFrame builds the 38-character TS-2000 IF status frame:
+//
+//	IF | freq(11) | step(4) | RIT(6) | RIT/XIT/…(3) | memch(2) | rx/tx | mode |
+//	FR | scan | split | tone | tone#(2) | shift | ;
+//
+// Only the frequency and mode carry meaning here; the rest is a valid, inert
+// state (no RIT, receiving, simplex) so the amp's parser is satisfied.
+func (s *Server) ifFrame(hz int64) string {
+	return fmt.Sprintf("IF%011d%04d%+06d%03d%02d%01d%c%01d%01d%01d%01d%02d%01d;",
+		hz,            // P1 frequency, Hz
+		0,             // P2 frequency step
+		0,             // P3 RIT/XIT offset, signed 5 digits
+		0,             // P4-P6 RIT off, XIT off, channel-bank
+		0,             // P7 memory channel
+		0,             // P8 0 = RX
+		s.modeDigit(), // P9 mode
+		0,             // P10 VFO A
+		0,             // P11 scan off
+		0,             // P12 split off
+		0,             // P13 tone off
+		0,             // P14 tone number
+		0,             // P15 shift
+	)
+}

internal/catemu/catemu_test.go

@@ -0,0 +1,45 @@
+package catemu
+
+import "testing"
+
+// The reply LENGTHS are the contract: an amplifier parses these frames by
+// fixed offsets, so a frame one character short desynchronises its parser for
+// every following poll. Pin them.
+func TestReplyShapes(t *testing.T) {
+	s := New(Config{ComPort: "COM99", Baud: 9600}, nil)
+	s.SetFrequency(14025000)
+	s.SetMode("CW")
+
+	if got := s.ifFrame(14025000); len(got) != 38 {
+		t.Errorf("IF frame is %d chars, want 38: %q", len(got), got)
+	}
+	// TS-2000 IF: "IF" then the 11-digit frequency in Hz.
+	if got := s.ifFrame(14025000); got[:13] != "IF00014025000" {
+		t.Errorf("IF frame frequency field = %q", got[:13])
+	}
+	if got := s.ifFrame(14025000); got[len(got)-1] != ';' {
+		t.Errorf("IF frame not terminated by ';': %q", got)
+	}
+	// Mode digit sits at P9, right after freq(11)+step(4)+rit(6)+3+2+1 — index 29 in the frame.
+	if got := s.ifFrame(14025000)[29]; got != '3' {
+		t.Errorf("CW mode digit = %q, want '3'", got)
+	}
+	s.SetMode("FT8") // data rides on SSB as far as an amp cares
+	if got := s.ifFrame(14074000)[29]; got != '2' {
+		t.Errorf("FT8 mode digit = %q, want '2'", got)
+	}
+}
+
+func TestModeDigit(t *testing.T) {
+	cases := map[string]byte{
+		"CW": '3', "CW-R": '3', "LSB": '1', "USB": '2', "SSB": '2',
+		"FM": '4', "AM": '5', "RTTY": '6', "": '2', "FT8": '2',
+	}
+	for mode, want := range cases {
+		s := New(Config{}, nil)
+		s.SetMode(mode)
+		if got := s.modeDigit(); got != want {
+			t.Errorf("mode %q → %q, want %q", mode, got, want)
+		}
+	}
+}

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,
-	"eqsl_sent":                 true,
-	"qrzcom_qso_upload_status":  true,
-	"clublog_qso_upload_status": true,
-	"hrdlog_qso_upload_status":  true,
+	"lotw_sent":                  true,
+	"eqsl_sent":                  true,
+	"qrzcom_qso_upload_status":   true,
+	"qrzcom_qso_download_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"`
-	ByStation   []Bucket `json:"by_station"` // station_callsign (the call put on the air)
-	ByContinent []Bucket `json:"by_continent"`
-	TopEntities []Bucket `json:"top_entities"`
-	ByYear      []Bucket `json:"by_year"`  // chronological
-	ByMonth     []Bucket `json:"by_month"` // "YYYY-MM", chronological
+	ByOperator     []Bucket       `json:"by_operator"`
+	ByStation      []Bucket       `json:"by_station"` // station_callsign (the call put on the air)
+	ByContinent    []Bucket       `json:"by_continent"`
+	TopEntities    []Bucket       `json:"top_entities"`
+	ByYear         []Bucket       `json:"by_year"`  // 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)
-	ByDay7    []Bucket `json:"by_day7"`     // the last 7 days ending at the newest QSO
-	ByDay30   []Bucket `json:"by_day30"`    // the last 30 days
-	ByMonth12 []Bucket `json:"by_month12"`  // the last 12 months
+	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
+	ByDay30   []Bucket `json:"by_day30"`   // the last 30 days
+	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"`
-	WindowEnd     string   `json:"window_end"`
-	WindowHours   float64  `json:"window_hours"`
+	WindowStart  string  `json:"window_start"`
+	WindowEnd    string  `json:"window_end"`
+	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{}{}
-		entities   = map[int]struct{}{}
-		modeC      = map[string]int{}
-		bandC      = map[string]int{}
-		bandCat    = map[string]*BandCategory{} // per band: cw/phone/data
-		opC        = map[string]int{}
-		stationC   = map[string]int{}
-		contC      = map[string]int{}
-		entityC    = map[string]int{}
-		yearC      = map[string]int{}
+		calls       = map[string]struct{}{}
+		entities    = map[int]struct{}{}
+		modeC       = map[string]int{}
+		bandC       = map[string]int{}
+		bandCat     = map[string]*BandCategory{} // per band: cw/phone/data
+		opC         = map[string]int{}
+		stationC    = map[string]int{}
+		contC       = map[string]int{}
+		entityC     = 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
-			oper, station                        sql.NullString
-			lotw, eqsl, paper                    sql.NullString
-			dxcc                                 sql.NullInt64
-			dateStr, contestID2                  sql.NullString
+			call, band, mode, cont, country sql.NullString
+			oper, station                   sql.NullString
+			lotw, eqsl, paper               sql.NullString
+			dxcc                            sql.NullInt64
+			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.
-//   • AvgPerActive = QSOs ÷ the hours actually operated. Flatters, but tells you
+//   - AvgPerHour  = QSOs ÷ the WHOLE window — breaks included. The honest number.
+//   - 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.

portable_path_test.go

@@ -0,0 +1,71 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+// The portable-folder contract: a database that lives inside the application
+// folder must be stored relative to it, so copying C:\OpsLog to D:\OpsLog (or to
+// a USB stick) keeps working. A path the operator deliberately put elsewhere
+// must be left exactly as it is.
+func TestPortablePath(t *testing.T) {
+	base := appDir()
+	if base == "" {
+		t.Skip("no executable dir available")
+	}
+
+	inside := filepath.Join(base, "data", "logbook.db")
+	if got := portablePath(inside); got != "data/logbook.db" {
+		t.Errorf("inside the app folder: got %q, want %q", got, "data/logbook.db")
+	}
+
+	// Outside: an absolute path on another drive / a synced folder is a
+	// deliberate choice and must survive untouched.
+	outside := filepath.FromSlash("Z:/Sync/ham/logbook.db")
+	if got := portablePath(outside); got != outside {
+		t.Errorf("outside the app folder: got %q, want it unchanged", got)
+	}
+
+	if got := portablePath(""); got != "" {
+		t.Errorf("empty path: got %q", got)
+	}
+}
+
+func TestResolvePath(t *testing.T) {
+	base := appDir()
+	if base == "" {
+		t.Skip("no executable dir available")
+	}
+
+	// A relative path is anchored to the CURRENT install, whatever drive it is on.
+	want := filepath.Join(base, "data", "logbook.db")
+	if got := resolvePath("", "data/logbook.db"); got != want {
+		t.Errorf("relative: got %q, want %q", got, want)
+	}
+
+	// An absolute path that still exists is honoured as-is.
+	dir := t.TempDir()
+	real := filepath.Join(dir, "logbook.db")
+	if err := os.WriteFile(real, []byte("x"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if got := resolvePath(dir, real); got != real {
+		t.Errorf("existing absolute: got %q, want %q", got, real)
+	}
+
+	// The rescue: a path from ANOTHER machine, with the same file present in this
+	// install's data folder — the copied-folder case.
+	stale := filepath.FromSlash("C:/OldPC/OpsLog/data/logbook.db")
+	if got := resolvePath(dir, stale); got != real {
+		t.Errorf("stale absolute with a local twin: got %q, want %q", got, real)
+	}
+
+	// No local twin: leave it alone so the failure is REPORTED rather than
+	// silently replaced by an unrelated database.
+	missing := filepath.FromSlash("C:/OldPC/OpsLog/data/other.db")
+	if got := resolvePath(dir, missing); got != missing {
+		t.Errorf("stale absolute with no twin: got %q, want it unchanged", got)
+	}
+}

telemetry.go

@@ -21,7 +21,7 @@ import (
 
 const (
 	// appVersion is stamped on every heartbeat (and could feed the About box).
-	appVersion = "0.21.4"
+	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.