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Caller/Callee UX: - lib/ringback.ts + assets/sounds/ringback_eu.mp3 (EU 425Hz Festnetz-Tone) - stores/call.ts: stopRingback bei connected, hangup-reasons, logCallToChat fix - locales: 'Wird angerufen…' statt 'Ruft an…' CallKit (iOS) + ConnectionService (Android): - lib/callkit.ts: setupCallKeep, displayIncomingCall, startOutgoingCall, reportConnected/Ended (appName 'ReBreak-Audio', includesCallsInRecents=false für DSGVO/DiGA) - hooks/useCallKeepEvents.ts: native answer/end/mute → useCallStore-Actions - stores/call.ts: CallKit-Aufrufe an allen lifecycle-Punkten - app.config.ts: @config-plugins/react-native-callkeep + UIBackgroundModes voip/audio + Android-Telecom-Perms VoIP-PushKit Backend: - services/voip-push.ts: @parse/node-apn Provider mit .p12 (Topic org.rebreak.app.voip) - services/push.ts sendCallRingPush: feuert beide Pfade (VoIP iOS + Expo Android/Fallback) - prisma: push_tokens.voip_token Column + Migration 20260604 - api/users/me/push-token: optional voipToken im Body - Env (Infisical): APNS_VOIP_P12_PATH/PASSWORD/TOPIC/PRODUCTION Push-tap routing + cold-start handling: - app/_layout.tsx: type:'call' Push → useCallStore.receiveIncoming + /call Docs: ops/CALLKIT_SETUP.md (Apple-Portal-Steps für VoIP-Cert)
