fix(calls): "Focus camera" toggles to "Unfocus"; pin cleared on dispose; drop dead setPipMode

clearFocusParticipant() had no callers, so a spotlight pin was permanent.
CallControl now tracks focusedUserId, the member menu toggles, and
dispose() clears the pin. Removes _pipMode/setPipMode (never read).

Fixes #56
Fixes #59

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PPmy3tPq869XDW4njjVaKA

src/app/plugins/call/CallControl.ts

@@ -33,7 +33,10 @@ export class CallControl extends EventEmitter implements CallControlState {
   // re-observe pass so a busy EC re-render doesn't thrash the control observer.
   private bodyMutationTimer?: ReturnType<typeof setTimeout>;
 
-  private _pipMode = false;
+  // [Gitea #56] Tracks the participant currently pinned via focusCameraParticipant(),
+  // so callers (MemberGlance) can render a "Focus camera" / "Unfocus camera" toggle
+  // instead of a one-way pin with no way back. null == no manual pin (speaker-follows).
+  private _focusedUserId: string | null = null;
 
   // C-M3: last quality payload requested via setQuality(). Held so we can (re)send
   // it once joined (io.lotus.set_quality must not be sent before call-join — a
@@ -422,10 +425,6 @@ export class CallControl extends EventEmitter implements CallControlState {
     this.spotlightButton?.click();
   }
 
-  public setPipMode(pip: boolean) {
-    this._pipMode = pip;
-  }
-
   public toggleReactions() {
     this.reactionsButton?.click();
   }
@@ -446,17 +445,29 @@ export class CallControl extends EventEmitter implements CallControlState {
    * participant has their camera off and EC didn't render a video tile for
    * them yet).
    */
+  public get focusedUserId(): string | null {
+    return this._focusedUserId;
+  }
+
   public focusCameraParticipant(userId: string): void {
     // [lotus #4] Pin the participant via the fork's widget action instead of
     // DOM-poking tiles. EC's layout honors it — including surfacing the camera
     // alongside a screenshare (A5) — and it's version-stable. The fork always
     // acks, so the promise resolves regardless.
+    this._focusedUserId = userId;
     this.call.transport.send('io.lotus.focus_participant', { userId }).catch(() => undefined);
+    // [Gitea #56] Notify state-update listeners so the menu can flip to "Unfocus camera".
+    this.emitStateUpdate();
   }
 
   /** [lotus #4] Clear any manual spotlight pin and return to speaker-follows. */
   public clearFocusParticipant(): void {
+    // [Gitea #56] No-op (and no redundant widget send) if nothing is pinned —
+    // dispose() calls this unconditionally on every call teardown.
+    if (this._focusedUserId === null) return;
+    this._focusedUserId = null;
     this.call.transport.send('io.lotus.focus_participant', { userId: null }).catch(() => undefined);
+    this.emitStateUpdate();
   }
 
   /**
@@ -502,6 +513,8 @@ export class CallControl extends EventEmitter implements CallControlState {
       clearTimeout(this.bodyMutationTimer);
       this.bodyMutationTimer = undefined;
     }
+    // [Gitea #56] Don't let a manual focus pin outlive the call.
+    this.clearFocusParticipant();
     this.bodyMutationObserver.disconnect();
     this.controlMutationObserver.disconnect();
   }