feat: Arabic UI + RTL support, 8-language support (ar/tr/it/pt), animated avatar characters, IELTS/TOEFL scenarios, improved toast notifications, streak tracking, Cairo font

feat: add Stories + Flashcards + Progress screens with bottom nav

Fix auth proxy IP forwarding, improve rate limiting, and polish UI/mobile behavior

Improve mobile web UX, STT/TTS reliability, service worker caching, and Android APK landing flow

Fix: onboarding always scrollable, never cut off on mobile

Responsive onboarding: mobile grid/flex fixes

feat: split auth into dedicated pages and enable flask auth routes

feat: replace auth module with updated Nova bridge and wire auth UI

chore: apply latest formatting and UI script/html updates

feat: add full interactive settings hub for UI/UX behavior

feat: add STT modes, voice profiles, and robust whisper diagnostics

Fix desktop responsive layout and add Whisper STT fallback

Fix mobile layout responsiveness

Update tutor app UI, exercises, and dependencies

Update space