Moderations-Panel: neue Seite /moderation für Mods und Admins

- Backend: routes/moderation.py mit GET /stats, /reports, /users, /fotos
  und PATCH-Endpoints für Ban/Unban und Foto-Review
- Frontend: pages/moderation.js mit 4 Tabs (Übersicht, Fotos, User, Forum)
- Sidebar-Eintrag (nur für Moderatoren/Admins sichtbar, gelb)
- Page in index.html registriert, pages-Objekt in app.js ergänzt
- Router in main.py eingebunden (/api/moderation)
- SW-Cache by-v357, app.js/ui.js/api.js auf v=94

backend/main.py

@@ -121,6 +121,7 @@ from routes.training       import router as training_router
 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
 
 app.include_router(auth_router,       prefix="/api/auth",       tags=["Auth"])
 app.include_router(dogs_router,       prefix="/api/dogs",       tags=["Hunde"])
@@ -161,6 +162,7 @@ app.include_router(stats_router,           prefix="/api/stats",           tags=[
 app.include_router(achievements_router,    prefix="/api/achievements",     tags=["Achievements"])
 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"])
 
 
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