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.

frontend/wailsjs/go/models.ts

@@ -1520,6 +1520,7 @@ export namespace main {
 	    transport: string;
 	    host: string;
 	    port: number;
+	    password: string;
 	    com_port: string;
 	    baud: number;
 	    freq_out: boolean;
@@ -1540,6 +1541,7 @@ export namespace main {
 	        this.transport = source["transport"];
 	        this.host = source["host"];
 	        this.port = source["port"];
+	        this.password = source["password"];
 	        this.com_port = source["com_port"];
 	        this.baud = source["baud"];
 	        this.freq_out = source["freq_out"];