web tv模式增加上下键可改为菜单模式

src/lib/tv-preferences.ts

@@ -0,0 +1,33 @@
+export type TVPlayerUpDownAction = 'wake-menu' | 'volume';
+
+export const TV_PLAYER_UP_DOWN_ACTION_KEY = 'tv_player_up_down_action';
+export const DEFAULT_TV_PLAYER_UP_DOWN_ACTION: TVPlayerUpDownAction =
+  'wake-menu';
+
+export function normalizeTVPlayerUpDownAction(
+  value: unknown
+): TVPlayerUpDownAction {
+  return value === 'volume' ? 'volume' : DEFAULT_TV_PLAYER_UP_DOWN_ACTION;
+}
+
+export function loadTVPlayerUpDownAction(): TVPlayerUpDownAction {
+  if (typeof window === 'undefined') return DEFAULT_TV_PLAYER_UP_DOWN_ACTION;
+
+  try {
+    return normalizeTVPlayerUpDownAction(
+      localStorage.getItem(TV_PLAYER_UP_DOWN_ACTION_KEY)
+    );
+  } catch {
+    return DEFAULT_TV_PLAYER_UP_DOWN_ACTION;
+  }
+}
+
+export function saveTVPlayerUpDownAction(action: TVPlayerUpDownAction): void {
+  if (typeof window === 'undefined') return;
+
+  try {
+    localStorage.setItem(TV_PLAYER_UP_DOWN_ACTION_KEY, action);
+  } catch {
+    // ignore localStorage failures in private/limited modes
+  }
+}