Fix syntax error in sync-service.js

Savestate: Implement E2E encrypted flashcard sync with Supabase backend

Savestate: Implement Android 13 Quick Settings Tile for quick vocabulary add

Savestate: Capacitor App Shortcuts Plugin eingerichtet

Feat: Add WebUntis history cache and optimize sync service (BUILD 1.7.0)

Perf: Sanitize TTS text in server.js to prevent Piper from stalling on emojis/URLs (BUILD 1.5.28)

Fix: Add CSS for active words and manually scroll container to prevent page jumping (BUILD 1.5.27)

Feat: Add live word highlighting (CC) for TTS player (BUILD 1.5.25)

Fix: Clear preload queue correctly on speed change and skip (BUILD 1.5.24)

Fix: Optimize TTS chunking to eliminate loading pauses (BUILD 1.5.22)

Fix: Serialize preload queue to prevent CPU starvation on HF (BUILD 1.5.18)

Feat: Seamless TTS preloading between chunks (BUILD 1.5.18)

Fix: Chunking TTS locally and added loading spinner (BUILD 1.5.17)

Feat: Complete rewrite of TTS using free Edge TTS proxy without API keys (BUILD 1.5.14)

UI/Fix: Opacity fade on drag and true 5-second skipping without punctuation limits (BUILD 1.5.13)

Fix: TTS allow multiple rapid skips with debounce (BUILD 1.5.10)

UI/Fix: Smooth TTS animation without outer glow, fix iOS pause/resume silence bug (BUILD 1.5.7)

UI/Fix: Gradient TTS player, better 5s skip chunks, immediate speed update (BUILD 1.5.3)

UI: Compact TTS Player and skip arrows (BUILD 1.5.2)

Fix: Seamless TTS speed change (BUILD 1.5.1)

Fix: TTS language detection, next/prev logic, and HTML/markdown stripping

Fix: TTS player not showing, 40.000 TTS split bug, and image loading scrolling

Savestate: Implement Apple Music style TTS Player with Web Speech API

Savestate: Add background interval sync and instant push triggers for multi-device sync

Savestate: Fix sync settings overwrite bug and persist crypto key in sessionStorage

Feature: Add Supabase Zero-Knowledge E2E Account Sync

Feat: Add native support for opening PDF, TXT, and CSV files directly from the folder view

Fix: Wrap UI permission popup text and add PDF generation support using html2pdf

Update independent app to newest state with LFS and binary removals