reduce graphics memory and hidden render work

src/stores/playerUiStore.ts

@@ -1,25 +1,18 @@
 import { create } from 'zustand';
 
 /**
- * Now-playing overlay gate. The player is an always-mounted overlay above the
- * navigator (not a route): `everOpened` latches the first mount so cold start
- * pays nothing, `playerOpen` drives the UI-thread slide open/close. Session
- * state only — never persisted.
+ * Now-playing overlay gate. The player is an overlay above the navigator (not
+ * a route); its host retains it only long enough to finish the close animation.
+ * Session state only — never persisted.
  */
 interface PlayerUiStore {
   playerOpen: boolean;
-  /** Mount latch: once true the overlay stays mounted (hidden) for instant reopen. */
-  everOpened: boolean;
   openPlayer: () => void;
   closePlayer: () => void;
-  /** Mount the overlay hidden (e.g. shortly after playback starts) so even the first open is instant. */
-  prewarm: () => void;
 }
 
 export const usePlayerUiStore = create<PlayerUiStore>((set) => ({
   playerOpen: false,
-  everOpened: false,
-  openPlayer: () => set({ playerOpen: true, everOpened: true }),
+  openPlayer: () => set({ playerOpen: true }),
   closePlayer: () => set({ playerOpen: false }),
-  prewarm: () => set({ everOpened: true }),
 }));