Controller: subtitle line actions, Button Style, keyboard-only mode pause, Alt+C fixes (#316)

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Claude <noreply@anthropic.com>

src/main/runtime/mpv-main-event-binding-deps.ts

@@ -373,6 +373,8 @@ export function createMpvMainEventBindingDeps(deps: {
       : undefined,
     recordPauseState: (paused: boolean) => {
       deps.appState.playbackPaused = paused;
+      // Lets keyboard-only mode's auto-pause see the user playing or pausing themselves.
+      deps.broadcastToOverlayWindows('mpv:pause-changed', paused);
       deps.ensureImmersionTrackerInitialized();
       deps.appState.immersionTracker?.recordPauseState?.(paused);
     },