Ship native iOS app, Wiki/TTS backend, and skeleton loading UX.

Replace the WebView shell with SwiftUI screens, add account-scoped Wiki and TTS APIs with adaptive review and photo scan support, and keep web/iOS pages usable while data loads asynchronously.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/main.py

@@ -10,6 +10,8 @@ from routers import (
     quiz_router,
     settings_router,
     translate_router,
+    tts_router,
+    wiki_router,
     word_router,
 )
 
@@ -33,6 +35,8 @@ app.include_router(word_router.router)
 app.include_router(quiz_router.router)
 app.include_router(settings_router.router)
 app.include_router(coach_router.router)
+app.include_router(wiki_router.router)
+app.include_router(tts_router.router)
 
 
 @app.get("/")