{"name":"BlitzerPro API","version":"3.0.0","features":["Extended User Management","User Favorites","Check-in History","Offline-First Registration","Chat Room System (hotspot, direct, group)","WebSocket Rooms + Typing Indicator","User Blocking","FCM Push (Data-Only – Google sieht keinen Nachrichteninhalt)","E2EE Private Chats (Signal Protocol – X3DH + Double Ratchet)","Admin Moderation (role-basiert, HTTP 403 für normale User)"],"endpoints":{"health":"/health","users":"/api/users/*","hotspots":"/api/hotspots/*","chat":"/api/chat/*","keys":"/api/keys/*","admin":"/api/admin/*"}}