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/ui/UpdateDialog.tsx

@@ -4,7 +4,7 @@ import { AppState, Modal, Pressable, ScrollView, Text, View } from 'react-native
 
 import { useSession, useSessionCtx } from '../lib/session';
 import { updater } from '../lib/update';
-import { colors, radius } from '../theme';
+import { radius, useColors } from '../theme';
 import { Button } from './kit';
 
 export function useUpdateState() {
@@ -13,6 +13,7 @@ export function useUpdateState() {
 
 /** Проверяет обновления при запуске и возврате в приложение; показывает диалог с «Что нового». */
 export function UpdateDialog() {
+  const colors = useColors();
   const { t } = useTranslation();
   const session = useSession();
   const { server } = useSessionCtx();