feat(mobile): Skia wave, wave player view, themes and playback settings (M5)

- My Wave is rendered with react-native-skia on the UI thread; physics
  and colour helpers moved to @pipu/core (wave-anim) and shared with web.
- Full-screen player honours ui_prefs.mobile_player (cover / wave).
- Theme switching (dark / light / system) via a theme context and
  useColors() across all screens.
- Profile: theme, wave variant, player view, sound quality sheet
  (Wi-Fi / mobile / downloads), recent-tracks cache clearing on next
  cold start, and a change-password sheet.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/mobile/src/player/controller.ts

@@ -15,6 +15,7 @@ import TrackPlayer, {
   type Track as RntpTrack,
 } from 'react-native-track-player';
 
+import { playerCache, qualityPrefs, type Quality } from '../lib/prefs';
 import { downloads } from '../offline/downloads';
 import { PersistentEvents } from '../offline/events';
 
@@ -62,12 +63,14 @@ export function absolute(server: string, path: string | null | undefined): strin
 }
 
 /** Качество по сети (docs/playback.md#качество): Wi-Fi — high, сотовая — medium. */
-async function quality(): Promise<'high' | 'medium'> {
+/** Качество стрима по типу сети — из настроек профиля. */
+async function quality(): Promise<Quality> {
+  const prefs = await qualityPrefs.load();
   try {
     const net = await NetInfo.fetch();
-    return net.type === 'cellular' ? 'medium' : 'high';
+    return net.type === 'cellular' ? prefs.cellular : prefs.wifi;
   } catch {
-    return 'high';
+    return prefs.wifi;
   }
 }
 
@@ -124,6 +127,8 @@ class Controller {
 
   setup(): Promise<void> {
     this.setupDone ??= (async () => {
+      // Очистка кэша из профиля — только пока сервис плеера не запущен (иначе SimpleCache держит файлы).
+      if (!(await TrackPlayer.isServiceRunning().catch(() => true))) await playerCache.clearIfRequested();
       try {
         // 500 МБ кэша ExoPlayer для недавних стримов (значение — в КБ).
         await TrackPlayer.setupPlayer({ maxCacheSize: 500 * 1024, autoHandleInterruptions: true });