fix: PGXL meters/auth/fan, TCI spots+click, PTT-over-CAT, CW <LOGQSO>

- PGXL: remote AUTH password; direct-link meter fallback (VITA-first) with
  250 ms poll + peak-hold; fan mode uses bare "fanmode=" (was ignored).
- TCI: spot colour sent as decimal ARGB (ExpertSDR dropped the hex string);
  spot click handled via CLICKED_ON_SPOT / RX_CLICKED_ON_SPOT to fill the entry.
- FlexRadio: clicking an OpsLog spot on the panadapter now applies the mode too.
- Filter presets: the trash icon deletes again (Radix pointer-down intercept).
- PTT hotkey: keys over CAT when a backend is active (was hijacked by a stale
  Audio-tab RTS/DTR serial setting); AltGr keys allowed; presses logged.
- CW macro <LOGQSO>: logs after the preceding CW is sent, not on the first letter.

internal/cat/tci.go

@@ -116,15 +116,32 @@ func (t *TCI) SendSpot(s SpotInfo) error {
 	if call == "" || s.FreqHz <= 0 {
 		return nil
 	}
-	color := strings.TrimSpace(s.Color)
-	if color == "" {
-		color = "#FFFFA500" // opaque orange default
+	// TCI's SPOT command wants the colour as a signed 32-bit DECIMAL integer in
+	// 0xAARRGGBB order — NOT a "0x…" hex string (e.g. "spot:UN7GK,cw,14025000,
+	// -16776961,test;"). ExpertSDR silently drops a spot whose colour field it
+	// can't parse as a number, which is why spots never showed on the panorama
+	// while tuning (a separate command) still worked.
+	hex := strings.TrimPrefix(strings.TrimPrefix(strings.TrimSpace(s.Color), "#"), "0x")
+	if hex == "" {
+		hex = "FFFFA500" // opaque orange default
+	}
+	if len(hex) == 6 {
+		hex = "FF" + hex // add full-opacity alpha when only RGB was supplied
+	}
+	argb, err := strconv.ParseUint(hex, 16, 32)
+	if err != nil {
+		argb = 0xFFFFA500
+	}
+	// Use a valid TCI modulation (usb/lsb/cw/digl…) so ExpertSDR accepts the spot;
+	// fall back to the raw label if we can't map it. The click-to-tune path already
+	// maps the mode separately, so this only affects the spot's displayed mode.
+	mode := adifToTCIMode(s.Mode, s.FreqHz)
+	if mode == "" {
+		mode = strings.ToLower(strings.TrimSpace(s.Mode))
 	}
-	color = "0x" + strings.TrimPrefix(color, "#")
-	mode := strings.ToLower(strings.TrimSpace(s.Mode))
 	// Commas/semicolons would break TCI's comma-separated argument parsing.
 	text := strings.NewReplacer(",", " ", ";", " ").Replace(s.Comment)
-	return t.send(fmt.Sprintf("spot:%s,%s,%d,%s,%s;", call, mode, s.FreqHz, color, text))
+	return t.send(fmt.Sprintf("spot:%s,%s,%d,%d,%s;", call, mode, s.FreqHz, int32(argb), text))
 }
 
 // Disconnect closes the WebSocket; the reader goroutine then exits.
@@ -302,14 +319,30 @@ func (t *TCI) handle(msg string) {
 		}
 	default:
 		lname := strings.ToLower(name)
-		// A click on one of our panorama spots comes back as a "spot…" message.
-		// The exact shape isn't well documented, so read a callsign (+ freq) from
-		// any spot-related message and fire the callback. The log line lets us pin
-		// the real format against a radio if it differs.
-		if strings.HasPrefix(lname, "spot") {
-			debugLog.Printf("TCI: spot event: %s", msg)
-			call := get(0)
-			hz, _ := strconv.ParseInt(get(2), 10, 64)
+		// A click on one of our panorama spots comes back as
+		//   CLICKED_ON_SPOT:<call>,<hz>              (legacy)
+		//   RX_CLICKED_ON_SPOT:<rx>,<ch>,<call>,<hz>
+		// Neither name starts with "spot", which is why the click was silently
+		// ignored before. Read the callsign (the one non-numeric field) and the
+		// frequency (the large numeric field) positionally-independently, so both
+		// shapes work without depending on the exact arg order.
+		if strings.Contains(lname, "spot") {
+			var call string
+			var hz int64
+			for _, raw := range f {
+				v := strings.TrimSpace(raw)
+				if v == "" {
+					continue
+				}
+				if n, err := strconv.ParseInt(v, 10, 64); err == nil {
+					if n >= 10000 { // a real frequency, not an rx/channel index
+						hz = n
+					}
+				} else if call == "" {
+					call = strings.ToUpper(v) // callsigns always carry letters
+				}
+			}
+			debugLog.Printf("TCI: spot click %q → call=%s freq=%d", msg, call, hz)
 			if call != "" && t.OnSpotClick != nil {
 				cb := t.OnSpotClick
 				go cb(call, hz)