Sprint 12+13: Tagebuch Day-One-Redesign, Notiz-Feature, Icon-Fixes, SW by-v405

Tagebuch:
- Day-One-Listenansicht: Wochentag + Tageszahl + Meta-Zeile (Zeit/Ort/Wetter)
- 4 Ansichten: Liste, Medien-Mosaik, Kalender (mit Sprungbuttons), Karte (GPS-Marker)
- Detail-Ansicht inline im Content-Bereich (kein Fullscreen-Overlay mehr)
- Hero-Bild vollständig sichtbar (object-fit:contain), Lightbox mit Safe-Area
- 2-Spalten-Layout Desktop: Text + Leaflet-Karte + POI-Liste
- EXIF-GPS-Extraktion bei Foto-Upload, historisches Wetter via Archive-API
- NoteStation-Import: Fotos in diary_media (80 Einträge migriert, 94 Medien)
- Stats-Endpoints: /diary/stats, /diary/calendar, /diary/locations

Notiz-Feature:
- Generische notes-Tabelle (parent_type + parent_id + meta_json)
- 📝-Button in 8 Bereichen, Notizblock-Seite mit KI-Analyse
- KI-Toggle in Einstellungen, notes_ki_enabled in User-Profil

Icons & Design:
- fill:currentColor Fix für welcome/onboarding/friends.js
- --c-icon Variable, --c-text-muted Dark Mode aufgehellt
- 15+ neue Phosphor-Icons aus lokaler Kopie
- CSS Network-First im SW, Cache-Control-Middleware

Infrastruktur:
- Wiki-Anreicherungs-Scheduler-Jobs entfernt (abgeschlossen)
- auth.py: notes_ki_enabled + is_social_media im User-Response

backend/main.py

@@ -80,6 +80,24 @@ class _UploadSizeMiddleware(BaseHTTPMiddleware):
 app.add_middleware(_UploadSizeMiddleware)
 
 
+class _CacheControlMiddleware(BaseHTTPMiddleware):
+    """Setzt Cache-Control-Header für statische Assets.
+    CSS/JS: no-cache (ETag-Validierung) — iOS cached sonst ewig ohne Ablaufdatum.
+    Versioned Assets (?v=…): immutable — URL ändert sich bei Updates.
+    """
+    async def dispatch(self, request: Request, call_next):
+        response = await call_next(request)
+        path = request.url.path
+        if path.startswith(("/css/", "/js/", "/icons/phosphor.svg")):
+            if "v=" in str(request.url.query):
+                response.headers["Cache-Control"] = "public, max-age=31536000, immutable"
+            else:
+                response.headers["Cache-Control"] = "no-cache, must-revalidate"
+        return response
+
+app.add_middleware(_CacheControlMiddleware)
+
+
 # ------------------------------------------------------------------
 # API-Router registrieren (werden nach und nach hinzugefügt)
 # ------------------------------------------------------------------
@@ -122,6 +140,7 @@ from routes.praise         import router as praise_router
 from routes.weather        import router as weather_router
 from routes.social         import router as social_router
 from routes.moderation     import router as moderation_router
+from routes.notes          import router as notes_router
 
 app.include_router(auth_router,       prefix="/api/auth",       tags=["Auth"])
 app.include_router(dogs_router,       prefix="/api/dogs",       tags=["Hunde"])
@@ -163,6 +182,7 @@ app.include_router(achievements_router,    prefix="/api/achievements",     tags=
 app.include_router(training_router,        prefix="/api/training",         tags=["Training"])
 app.include_router(praise_router,          prefix="/api/praise",            tags=["Praise"])
 app.include_router(moderation_router,      prefix="/api/moderation",         tags=["Moderation"])
+app.include_router(notes_router,           prefix="/api/notes",               tags=["Notes"])
 
 
 # ------------------------------------------------------------------