feat(api): toggleMicrophoneMute + recording://mic event + close_to_tray setting

src/lib/api.ts

@@ -365,6 +365,9 @@ export interface AppSettings {
   /** Launch WhispAssist at login (opt-in, off by default; NFR-RES-4). Toggled
    * via setAutoStart, which writes a per-user Run entry (no admin). */
   auto_start: boolean;
+  /** Closing the window hides to the tray (keep running in background) instead
+   * of quitting; on by default. Tray "Quit" is the real exit. */
+  close_to_tray: boolean;
 }
 
 // Feature brief — agent-ready spec distilled from a meeting (ADR-0011).
@@ -427,6 +430,10 @@ export const api = {
     invoke<string>("recording_playback_path", { meetingId }),
   pauseRecording: (meetingId: MeetingId) => invoke<void>("pause_recording", { meetingId }),
   resumeRecording: (meetingId: MeetingId) => invoke<void>("resume_recording", { meetingId }),
+  // Toggle mic mute for the active recording (FR-CAP-7); returns the new muted
+  // state. Errors if the meeting was started with the mic off.
+  toggleMicrophoneMute: (meetingId: MeetingId) =>
+    invoke<boolean>("toggle_microphone_mute", { meetingId }),
   setRecordingRetention: (meetingId: MeetingId, record: boolean) =>
     invoke<void>("set_recording_retention", { meetingId, record }),
   acknowledgeRecordingConsent: () => invoke<void>("acknowledge_recording_consent"),
@@ -628,6 +635,10 @@ export const events = {
   onDeviceChanged: (
     cb: (p: { meetingId: string; recovered: boolean; message: string }) => void,
   ): Promise<UnlistenFn> => listen("recording://device", (e) => cb(e.payload as never)),
+  // Mic mute toggled for the active recording (FR-CAP-7).
+  onMicMuted: (
+    cb: (p: { meetingId: string; muted: boolean }) => void,
+  ): Promise<UnlistenFn> => listen("recording://mic", (e) => cb(e.payload as never)),
   onSegment: (
     cb: (p: { meetingId: string; segment: TranscriptSegment }) => void,
   ): Promise<UnlistenFn> => listen("transcript://segment", (e) => cb(e.payload as never)),