refactor(miniPlayer): co-locate mini player feature into features/miniPlayer

src/features/miniPlayer/hooks/useMiniSync.ts

@@ -0,0 +1,48 @@
+import { useEffect, useRef } from 'react';
+import { emit, listen } from '@tauri-apps/api/event';
+import { useWindowVisibility } from '@/hooks/useWindowVisibility';
+import type { MiniSyncPayload } from '@/features/miniPlayer/utils/miniPlayerBridge';
+
+interface ProgressPayload {
+  current_time: number;
+  duration: number;
+}
+
+interface Args {
+  onSync: (s: MiniSyncPayload) => void;
+  onProgress: (currentTime: number, duration: number) => void;
+  onEnded: () => void;
+}
+
+/** Bridge wiring between the mini webview and the main window / Rust:
+ *  - emits mini:ready on mount + on focus (Windows pre-creates the mini so the
+ *    mount-time emit can race the main bridge; refocus guarantees re-sync)
+ *  - listens for mini:sync, audio:progress (skipped while hidden), audio:ended
+ *  - cleans up on unmount */
+export function useMiniSync({ onSync, onProgress, onEnded }: Args) {
+  const isHidden = useWindowVisibility();
+  const hiddenRef = useRef(false);
+  useEffect(() => { hiddenRef.current = isHidden; }, [isHidden]);
+
+  useEffect(() => {
+    emit('mini:ready', {}).catch(() => {});
+    const onFocus = () => { emit('mini:ready', {}).catch(() => {}); };
+    window.addEventListener('focus', onFocus);
+    return () => window.removeEventListener('focus', onFocus);
+  }, []);
+
+  useEffect(() => {
+    const unSync = listen<MiniSyncPayload>('mini:sync', (e) => onSync(e.payload));
+    const unProgress = listen<ProgressPayload>('audio:progress', (e) => {
+      if (hiddenRef.current || window.__psyHidden) return;
+      onProgress(e.payload.current_time, e.payload.duration);
+    });
+    const unEnded = listen('audio:ended', () => onEnded());
+    return () => {
+      unSync.then(fn => fn()).catch(() => {});
+      unProgress.then(fn => fn()).catch(() => {});
+      unEnded.then(fn => fn()).catch(() => {});
+    };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+}