refactor: M2-Call-Pilot – Module call_signaling + voice_channel mit Fassaden (Entscheidung 2)

- CallSignalingService/callSignalingProvider und VoiceChannelService/
  voiceChannelProvider als einzige oeffentliche Schnittstellen
- voip_manager.dart / livekit_call_manager.dart in ihre Module verschoben,
  Logik unangetastet (nur Klassen-Koepfe, @override, Imports, Provider-Namen)
- Alle Konsumenten entkoppelt; Kompositions-Punkt matrix_client.dart als
  dokumentierte Ausnahme. analyze sauber, 29 Tests gruen, Windows-Start ok.
  Call-Klick-/Geraetetest steht aus (PROGRESS.md)

CHANGES.md

@@ -1333,3 +1333,59 @@
 2026-07-06 12:29 [Edit] C:\Users\nordm\pyramid - Kopie\docs\SQLCIPHER_MIGRATION.md
 2026-07-06 12:30 [Edit] C:\Users\nordm\pyramid - Kopie\ROADMAP.md
 2026-07-06 12:31 [Edit] C:\Users\nordm\pyramid - Kopie\PROGRESS.md
+2026-07-06 12:33 [Write] C:\Users\nordm\pyramid - Kopie\lib\features\call_signaling\call_signaling_service.dart
+2026-07-06 12:33 [Write] C:\Users\nordm\pyramid - Kopie\lib\features\voice_channel\voice_channel_service.dart
+2026-07-06 12:34 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call_signaling\voip_manager.dart
+2026-07-06 12:34 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call_signaling\voip_manager.dart
+2026-07-06 12:34 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call_signaling\voip_manager.dart
+2026-07-06 12:34 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call_signaling\voip_manager.dart
+2026-07-06 12:34 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call_signaling\voip_manager.dart
+2026-07-06 12:34 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call_signaling\voip_manager.dart
+2026-07-06 12:34 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call_signaling\voip_manager.dart
+2026-07-06 12:34 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call_signaling\voip_manager.dart
+2026-07-06 12:34 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call_signaling\voip_manager.dart
+2026-07-06 12:34 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call_signaling\voip_manager.dart
+2026-07-06 12:35 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\voice_channel\livekit_call_manager.dart
+2026-07-06 12:35 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\voice_channel\livekit_call_manager.dart
+2026-07-06 12:35 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\voice_channel\livekit_call_manager.dart
+2026-07-06 12:35 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\voice_channel\livekit_call_manager.dart
+2026-07-06 12:35 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\voice_channel\livekit_call_manager.dart
+2026-07-06 12:35 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\voice_channel\livekit_call_manager.dart
+2026-07-06 12:35 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\voice_channel\livekit_call_manager.dart
+2026-07-06 12:35 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\voice_channel\livekit_call_manager.dart
+2026-07-06 12:35 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\voice_channel\livekit_call_manager.dart
+2026-07-06 12:35 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\voice_channel\livekit_call_manager.dart
+2026-07-06 12:35 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\voice_channel\livekit_call_manager.dart
+2026-07-06 12:35 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\voice_channel\livekit_call_manager.dart
+2026-07-06 12:35 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\voice_channel\livekit_call_manager.dart
+2026-07-06 12:35 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\voice_channel\livekit_call_manager.dart
+2026-07-06 12:35 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\voice_channel\livekit_call_manager.dart
+2026-07-06 12:36 [Edit] C:\Users\nordm\pyramid - Kopie\lib\core\app_state.dart
+2026-07-06 12:36 [Edit] C:\Users\nordm\pyramid - Kopie\lib\core\app_state.dart
+2026-07-06 12:36 [Edit] C:\Users\nordm\pyramid - Kopie\lib\core\matrix_client.dart
+2026-07-06 12:37 [Edit] C:\Users\nordm\pyramid - Kopie\lib\layout\app_shell.dart
+2026-07-06 12:37 [Edit] C:\Users\nordm\pyramid - Kopie\lib\layout\app_shell.dart
+2026-07-06 12:37 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\rooms\rooms_panel.dart
+2026-07-06 12:37 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call\mini_call_widget.dart
+2026-07-06 12:37 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call\mini_call_widget.dart
+2026-07-06 12:37 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call\mini_call_widget.dart
+2026-07-06 12:37 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call\mini_call_widget.dart
+2026-07-06 12:37 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call\voice_channel.dart
+2026-07-06 12:37 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call\voice_channel.dart
+2026-07-06 12:37 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call\voice_channel.dart
+2026-07-06 12:38 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call\voice_channel.dart
+2026-07-06 12:38 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call\voice_channel.dart
+2026-07-06 12:38 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call\voice_channel.dart
+2026-07-06 12:38 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call\mini_call_widget.dart
+2026-07-06 12:38 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call\mini_call_widget.dart
+2026-07-06 12:38 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\chat\view\chat_header.dart
+2026-07-06 12:38 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\chat\view\chat_header.dart
+2026-07-06 12:38 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\chat\chat_view.dart
+2026-07-06 12:39 [Edit] C:\Users\nordm\pyramid - Kopie\lib\widgets\settings_modal.dart
+2026-07-06 12:39 [Edit] C:\Users\nordm\pyramid - Kopie\lib\widgets\settings\settings_voice.dart
+2026-07-06 12:39 [Edit] C:\Users\nordm\pyramid - Kopie\lib\widgets\settings\settings_voice.dart
+2026-07-06 12:39 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\chat\chat_view.dart
+2026-07-06 12:39 [Edit] C:\Users\nordm\pyramid - Kopie\lib\features\call_signaling\call_signaling_service.dart
+2026-07-06 12:41 [Edit] C:\Users\nordm\pyramid - Kopie\docs\M2_MODULE_SCHNITT.md
+2026-07-06 12:41 [Edit] C:\Users\nordm\pyramid - Kopie\ROADMAP.md
+2026-07-06 12:42 [Edit] C:\Users\nordm\pyramid - Kopie\PROGRESS.md

PROGRESS.md

@@ -13,6 +13,61 @@ Schritt (und beim Abbruch mitten im Schritt den Zwischenstand). Format:
 
 ---
 
+## 2026-07-06 – M2-Call-Pilot: Module call_signaling + voice_channel mit Fassaden umgesetzt (Entscheidung 2)
+
+**Erledigt:** Das erste M2-Umbau-Modul nach `docs/M2_MODULE_SCHNITT.md`
+(Bernds Entscheidung 2: Call-Pilot zuerst, nicht settings_modal):
+
+- **Zwei neue Module mit schmaler öffentlicher Schnittstelle:**
+  `lib/features/call_signaling/` (`CallSignalingService` +
+  `callSignalingProvider`; Implementierung `voip_manager.dart` hierher
+  verschoben) und `lib/features/voice_channel/` (`VoiceChannelService` +
+  `voiceChannelProvider`; Implementierung `livekit_call_manager.dart`
+  hierher verschoben). Die zwei Call-Mechanismen bleiben wie im Doc
+  begründet GETRENNT (Matrix-1:1-VoIP vs. LiveKit-SFU-Kanäle).
+- **Alle Konsumenten entkoppelt:** app_shell, Call-UI (`voice_channel.dart`,
+  `mini_call_widget.dart`), Rooms-Panel (Join/Leave, Call-Dock),
+  Chat-Header (Call-Start), Settings (`_VoiceSection` ist jetzt
+  ConsumerStatefulWidget und nutzt die Provider statt der Singletons) –
+  niemand importiert mehr die Implementierungsdateien, repo-weit verifiziert.
+  Einzige dokumentierte Ausnahme: `matrix_client.dart` als Kompositions-
+  Punkt, der `PyramidVoipManager(client)` konstruiert. Die alten Provider
+  `callStateProvider`/`voipStateProvider` in app_state.dart sind ersatzlos
+  durch die Modul-Provider ersetzt (reine Umbenennung + Typ = Interface).
+- **Bewusste Abweichungen vom Schnitt-Entwurf** (Verhaltensgleichheit vor
+  Schönheit, heiliger Call-Pfad; im Doc-Status-Kopf dokumentiert):
+  ChangeNotifier statt Streams, Methodennamen wie im Bestand
+  (`startCall`/`hangUp` statt `join`/`leave`), `CallSession` und
+  LiveKit-`Room` bleiben in den Schnittstellen sichtbar (UI rendert direkt
+  Renderer/Tracks – für die WebRTC-Renderer sieht das Doc das selbst vor).
+  Kein einziger Handler-/Logik-Block wurde verändert, nur Klassen-Köpfe
+  (`extends` + `@override`), Imports, Provider-Namen und Typ-Annotationen.
+- **Geprüft:** `flutter analyze` sauber (nur bekannter onUpdate-Hinweis),
+  alle 29 Tests grün, `flutter run -d windows`: App startet, Login/Sync/E2EE
+  laufen, sauberer Quit. (Commit-Hash siehe git log dieses Eintrags.)
+
+**UNGETESTET (interaktiv/Gerät – deshalb ROADMAP-Punkt „Call-Schicht
+entwirren" nur annotiert, nicht abgehakt):** echter Voice-Channel-Join per
+Klick auf Windows und echter 1:1-Call zwischen zwei Geräten. Der Umbau ist
+bewusst rein mechanisch (Fassade davor, Logik unangetastet), aber die
+CLAUDE.md-Regel „nach Refactoring Kernflows prüfen" ist für die Call-Flows
+erst nach einem Klick-/Gerätetest voll erfüllt – steht im PC_TESTPLAN
+(Abschnitt 8) bzw. braucht Bernd/Uta.
+
+**Offen/Nächster Schritt:** Härtetest nach `docs/PC_TESTPLAN.md` (so weit
+ohne Klick-Interaktion möglich); die inneren M2-Aufräumarbeiten der
+Call-Schicht (UI-State aus den Managern, `call_ui`-Modul, storage-Fassade
+für die voice_*-Prefs) folgen als eigene Schritte.
+
+**Stolperfallen:** (1) Bei part-Dateien (settings, rooms_panel, chat_view)
+hängen die Imports an der EINEN Owner-Datei – wer eine part-Datei umstellt,
+muss die Imports beim Owner ändern und findet Verwender nur per Repo-grep
+auf den Provider-Namen. (2) Ein `ChangeNotifierProvider<Interface>` braucht
+ein Interface, das ChangeNotifier ERWEITERT (abstract class X extends
+ChangeNotifier), sonst passt der Typparameter nicht.
+
+---
+
 ## 2026-07-06 – SQLCipher-Migration UMGESETZT + auf Windows mit echter DB praxisgetestet (M1, Bernds Prio 1)
 
 **Erledigt:** Der M1-Punkt „Sichere Speicherung von Access-Token & Krypto-DB"

ROADMAP.md

@@ -173,6 +173,17 @@ lassen, ohne dass andere Module angefasst werden müssen.
       Bernds Go für den Call-Pilot (Frage in PROGRESS.md).
 - [ ] Call-Schicht entwirren: EINE klare Zuständigkeit pro Klasse (Signalisierung /
       LiveKit-Verbindung / UI-State sauber getrennt)
+      **Teilschritt erledigt (2026-07-06, M2-Pilot laut Entscheidung 2):**
+      Module `call_signaling` und `voice_channel` mit Fassaden-Interfaces +
+      Providern existieren (`lib/features/call_signaling/`,
+      `lib/features/voice_channel/`), alle Konsumenten gehen nur noch über
+      `callSignalingProvider`/`voiceChannelProvider` – kein UI-Import der
+      Implementierungen mehr (Details/Abweichungen: Status-Kopf in
+      `docs/M2_MODULE_SCHNITT.md`). App startet, 29 Tests grün, Sync/E2EE
+      laufen. **UNGETESTET:** echter 1:1-Call und Voice-Channel-Join per
+      Klick (braucht Gerät bzw. interaktiven Test) – deshalb nicht abgehakt;
+      außerdem stehen die inneren Aufräumarbeiten (UI-State aus den Managern
+      heraus, `call_ui`-Modul) noch aus.
 - [ ] Einheitliches State-Management (Riverpod konsequent, keine Misch-Patterns)
 - [x] Toten Code & Duplikate entfernen, Ordnerstruktur vereinheitlichen
       (PROGRESS.md 2026-07-03: `message_bubble.dart` tot entfernt, doppelte

docs/M2_MODULE_SCHNITT.md

@@ -1,5 +1,21 @@
 # M2 – Modul-Schnitt (Entwurf)
 
+> **STATUS 2026-07-06: Pilot (Schritt 1) UMGESETZT.** Die Module
+> `call_signaling` (`lib/features/call_signaling/`: `CallSignalingService`
+> + `callSignalingProvider` + Implementierung `voip_manager.dart`) und
+> `voice_channel` (`lib/features/voice_channel/`: `VoiceChannelService` +
+> `voiceChannelProvider` + Implementierung `livekit_call_manager.dart`)
+> existieren; ALLE Konsumenten (Shell, Call-UI, Rooms-Panel, Chat-Header,
+> Settings) gehen nur noch über die Provider/Interfaces, kein direkter
+> Implementierungs-Import mehr (einzige dokumentierte Ausnahme:
+> Kompositions-Punkt `matrix_client.dart`). Bewusste Abweichungen vom
+> Entwurf unten (Verhaltensgleichheit vor Schönheit, heiliger Call-Pfad):
+> ChangeNotifier statt Streams, Methodennamen wie im Bestand
+> (`startCall`/`hangUp` statt `join`/`leave`), `CallSession`/LiveKit-`Room`
+> bleiben in den Schnittstellen sichtbar, weil die UI direkt rendert.
+> Echter Call-/Voice-Channel-Test steht aus (Gerät bzw. Klick-Test) –
+> siehe PROGRESS.md 2026-07-06. Schritte 2–5 unten sind weiter offen.
+
 Stand: 2026-07-03. Reine Schnittstellen-Planung, noch kein Umbau. Grundlage:
 Ist-Analyse in `PROGRESS.md` (Eintrag „M2: Ist-Analyse der Architektur
 geschrieben"). Leitprinzip (Bernd, `CLAUDE.md`): jedes Modul muss sich in

lib/core/app_state.dart

@@ -3,8 +3,6 @@ import 'package:matrix/matrix.dart';
 import 'package:pyramid/core/settings_prefs.dart';
 import 'package:pyramid/core/theme.dart';
 import 'package:pyramid/core/matrix_client.dart';
-import 'package:pyramid/core/livekit_call_manager.dart';
-import 'package:pyramid/core/voip_manager.dart';
 import 'package:pyramid/features/rooms/rooms_provider.dart';
 
 // ─── Theme state ──────────────────────────────────────────────────────────────
@@ -64,14 +62,9 @@ enum ModalKind { none, settings, search }
 final activeModalProvider = StateProvider<ModalKind>((ref) => ModalKind.none);
 
 // ─── Call state ───────────────────────────────────────────────────────────────
-
+// Die Call-Provider leben seit dem M2-Call-Pilot in ihren Modulen:
-final callStateProvider = ChangeNotifierProvider<LiveKitCallManager>((ref) {
+// `callSignalingProvider` (features/call_signaling/call_signaling_service.dart)
-  return LiveKitCallManager.instance;
+// und `voiceChannelProvider` (features/voice_channel/voice_channel_service.dart).
-});
-
-final voipStateProvider = ChangeNotifierProvider<PyramidVoipManager>((ref) {
-  return PyramidVoipManager.instance;
-});
 
 final incomingCallProvider = StateProvider<CallSession?>((ref) => null);
 

lib/core/matrix_client.dart

@@ -9,7 +9,9 @@ import 'package:matrix/matrix.dart';
 import 'package:pyramid/core/app_database.dart';
 import 'package:pyramid/core/auth_log.dart';
 import 'package:pyramid/core/soft_logout_guard.dart';
-import 'package:pyramid/core/voip_manager.dart';
+// Kompositions-Punkt: Einzige Stelle außerhalb des call_signaling-Moduls,
+// die die Implementierung (statt der Fassade) kennen darf – sie erzeugt sie.
+import 'package:pyramid/features/call_signaling/voip_manager.dart';
 
 final matrixClientProvider = FutureProvider<Client>((ref) async {
   // Factory-Wahl, Verschlüsselung (SQLCipher), Migration und PRAGMAs stecken

lib/features/call/mini_call_widget.dart

@@ -3,14 +3,14 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:pyramid/core/app_state.dart';
 import 'package:pyramid/core/theme.dart';
-import 'package:pyramid/core/livekit_call_manager.dart';
+import 'package:pyramid/features/call_signaling/call_signaling_service.dart';
-import 'package:pyramid/core/voip_manager.dart';
+import 'package:pyramid/features/voice_channel/voice_channel_service.dart';
 import 'package:pyramid/widgets/screen_share_picker.dart';
 import 'package:flutter_webrtc/flutter_webrtc.dart' as rtc;
 import 'package:livekit_client/livekit_client.dart';
 
 class MiniCallWidget extends ConsumerStatefulWidget {
-  final dynamic call; // Can be LiveKitCallManager or PyramidVoipManager
+  final dynamic call; // CallSignalingService (1:1) oder VoiceChannelService
   const MiniCallWidget({super.key, required this.call});
 
   @override
@@ -45,7 +45,7 @@ class _MiniCallWidgetState extends ConsumerState<MiniCallWidget> {
   @override
   Widget build(BuildContext context) {
     final pt = PyramidTheme.of(context);
-    final isVoip = widget.call is PyramidVoipManager;
+    final isVoip = widget.call is CallSignalingService;
     final call = widget.call;
 
     final String displayName = isVoip 
@@ -95,7 +95,7 @@ class _MiniCallWidgetState extends ConsumerState<MiniCallWidget> {
                             isStreaming ? call.localRenderer : call.remoteRenderer,
                             objectFit: rtc.RTCVideoViewObjectFit.RTCVideoViewObjectFitCover,
                           )
-                        : _LiveKitPreview(manager: call as LiveKitCallManager),
+                        : _LiveKitPreview(manager: call as VoiceChannelService),
                     ),
                   
                   // Top bar of preview
@@ -259,9 +259,9 @@ class _MiniCallWidgetState extends ConsumerState<MiniCallWidget> {
                   pt: pt,
                   onTap: () async {
                     if (isVoip) {
-                      (call as PyramidVoipManager).toggleScreenSharing(context);
+                      (call as CallSignalingService).toggleScreenSharing(context);
                     } else {
-                      final lk = call as LiveKitCallManager;
+                      final lk = call as VoiceChannelService;
                       if (lk.isScreenSharing) {
                         await lk.stopScreenShare();
                       } else {
@@ -351,7 +351,7 @@ class _ControlBtnState extends State<_ControlBtn> {
 }
 
 class _LiveKitPreview extends StatelessWidget {
-  final LiveKitCallManager manager;
+  final VoiceChannelService manager;
   const _LiveKitPreview({required this.manager});
 
   @override

lib/features/call/voice_channel.dart

@@ -6,8 +6,8 @@ import 'package:collection/collection.dart';
 import 'package:pyramid/core/app_state.dart';
 import 'package:pyramid/widgets/screen_share_picker.dart';
 import 'package:pyramid/core/theme.dart';
-import 'package:pyramid/core/livekit_call_manager.dart';
+import 'package:pyramid/features/call_signaling/call_signaling_service.dart';
-import 'package:pyramid/core/voip_manager.dart';
+import 'package:pyramid/features/voice_channel/voice_channel_service.dart';
 import 'package:flutter_webrtc/flutter_webrtc.dart' as rtc;
 import 'package:pyramid/widgets/hover_region.dart';
 import 'package:pyramid/widgets/pyramid_loader.dart';
@@ -45,8 +45,8 @@ class VoiceChannelView extends ConsumerWidget {
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     final pt = PyramidTheme.of(context);
-    final call = ref.watch(callStateProvider);
+    final call = ref.watch(voiceChannelProvider);
-    final voip = ref.watch(voipStateProvider);
+    final voip = ref.watch(callSignalingProvider);
 
     if (voip.currentCall != null && voip.currentCall!.state != CallState.kEnded) {
       return _UnifiedCallView(
@@ -101,7 +101,7 @@ class VoiceChannelView extends ConsumerWidget {
     );
   }
 
-  List<_ParticipantData> _getLiveKitParticipants(LiveKitCallManager call) {
+  List<_ParticipantData> _getLiveKitParticipants(VoiceChannelService call) {
     final room = call.room;
     if (room == null) return [];
     final all = <Participant>[
@@ -142,7 +142,7 @@ class VoiceChannelView extends ConsumerWidget {
     }).toList();
   }
 
-  List<_ParticipantData> _getVoipParticipants(PyramidVoipManager voip) {
+  List<_ParticipantData> _getVoipParticipants(CallSignalingService voip) {
     final participants = <_ParticipantData>[];
 
     double ar(rtc.RTCVideoRenderer r) {
@@ -997,7 +997,7 @@ class _FullscreenVideoPage extends StatelessWidget {
   }
 }
 
-void _handleLiveKitScreenShare(BuildContext context, LiveKitCallManager call) async {
+void _handleLiveKitScreenShare(BuildContext context, VoiceChannelService call) async {
   if (call.isScreenSharing) {
     await call.stopScreenShare();
   } else {
@@ -1006,7 +1006,7 @@ void _handleLiveKitScreenShare(BuildContext context, LiveKitCallManager call) as
   }
 }
 
-void _showLiveKitQualityMenu(BuildContext context, LiveKitCallManager call, Offset pos) {
+void _showLiveKitQualityMenu(BuildContext context, VoiceChannelService call, Offset pos) {
   final pt = PyramidTheme.of(context);
   showMenu(
     context: context,
@@ -1025,7 +1025,7 @@ void _showLiveKitQualityMenu(BuildContext context, LiveKitCallManager call, Offs
   );
 }
 
-void _showVoipQualityMenu(BuildContext context, PyramidVoipManager voip, Offset pos) {
+void _showVoipQualityMenu(BuildContext context, CallSignalingService voip, Offset pos) {
   final pt = PyramidTheme.of(context);
   showMenu(
     context: context,

lib/features/call_signaling/call_signaling_service.dart

@@ -0,0 +1,67 @@
+import 'package:flutter/widgets.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_webrtc/flutter_webrtc.dart' as rtc;
+import 'package:matrix/matrix.dart';
+import 'package:pyramid/features/call_signaling/voip_manager.dart';
+
+/// Öffentliche Schnittstelle des Moduls `call_signaling` – natives
+/// Matrix-1:1-VoIP (`m.call.*`-Events, direkte WebRTC-Peer-Connection,
+/// kein SFU). Schnitt nach `docs/M2_MODULE_SCHNITT.md`.
+///
+/// Andere Module (UI, Settings, Shell) konsumieren AUSSCHLIESSLICH diese
+/// Schnittstelle über [callSignalingProvider] – nie `voip_manager.dart`
+/// direkt. Einzige Ausnahme ist der Kompositions-Punkt in
+/// `matrix_client.dart`, der die Implementierung konstruiert.
+///
+/// Bewusste Abweichungen vom Entwurf im Doc (Verhaltensgleichheit vor
+/// Schönheit, heiliger Call-Pfad):
+///  * ChangeNotifier statt Streams – die gesamte UI hängt heute an
+///    `ref.watch(...)` mit notifyListeners; ein Stream-Umbau wäre eine
+///    Verhaltensänderung ohne Not.
+///  * [currentCall] bleibt als matrix-SDK-`CallSession` sichtbar (die UI
+///    braucht state/room/answer/reject), ebenso die WebRTC-Renderer –
+///    das Doc sieht Letzteres ausdrücklich vor.
+abstract class CallSignalingService extends ChangeNotifier {
+  /// Der laufende 1:1-Call (null = keiner). UI liest state/room und
+  /// beantwortet eingehende Calls über [safeAction] + answer()/reject().
+  CallSession? get currentCall;
+
+  rtc.RTCVideoRenderer get localRenderer;
+  rtc.RTCVideoRenderer get remoteRenderer;
+
+  bool get isMicMuted;
+  bool get isCameraMuted;
+  bool get isScreensharing;
+  bool get isRemoteScreensharing;
+  bool get isDeafened;
+
+  /// Sende-Qualität ('sd' | 'hd' | 'fhd' | '4k').
+  String get currentQualityKey;
+
+  Future<void> startCall(String roomId, {bool video});
+  Future<void> hangup();
+  Future<void> toggleMic();
+  Future<void> toggleCamera();
+  Future<void> toggleDeafen();
+
+  /// Auf Windows öffnet ein [context] den Quellen-Picker fürs Screensharing.
+  Future<void> toggleScreenSharing([BuildContext? context]);
+
+  Future<void> changeQuality(String key);
+
+  /// Wendet die in den Einstellungen gewählte Ausgabelautstärke auf den
+  /// Remote-Stream an. Ohne [value] wird der Pref-Wert gelesen.
+  Future<void> applyOutputVolume([double? value]);
+
+  /// Führt eine Call-Aktion (answer/reject/…) fehlertolerant aus und stößt
+  /// danach die interne Zustands-/Renderer-Aktualisierung an.
+  Future<void> safeAction(Future<dynamic> Function() action);
+}
+
+/// Einziger Zugriffsweg der UI auf das 1:1-VoIP-Modul. Die Instanz wird beim
+/// Client-Aufbau in `matrix_client.dart` erzeugt (existiert also, sobald die
+/// eingeloggte Shell steht).
+final callSignalingProvider =
+    ChangeNotifierProvider<CallSignalingService>((ref) {
+  return PyramidVoipManager.instance;
+});

lib/features/call_signaling/voip_manager.dart

@@ -6,17 +6,25 @@ import 'package:matrix/matrix.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:webrtc_interface/webrtc_interface.dart';
 import 'package:pyramid/core/ice_servers.dart';
+import 'package:pyramid/features/call_signaling/call_signaling_service.dart';
 import 'package:pyramid/widgets/screen_share_picker.dart';
 
-class PyramidVoipManager extends ChangeNotifier implements WebRTCDelegate {
+/// Implementierung von [CallSignalingService] (Modul `call_signaling`).
+/// Wird ausschließlich vom Kompositions-Punkt (`matrix_client.dart`)
+/// konstruiert; alle anderen gehen über `callSignalingProvider`.
+class PyramidVoipManager extends CallSignalingService
+    implements WebRTCDelegate {
   static PyramidVoipManager? _instance;
   static PyramidVoipManager get instance => _instance!;
 
   final Client client;
   late final VoIP voip;
+  @override
   CallSession? currentCall;
 
+  @override
   final rtc.RTCVideoRenderer localRenderer = rtc.RTCVideoRenderer();
+  @override
   final rtc.RTCVideoRenderer remoteRenderer = rtc.RTCVideoRenderer();
   bool _renderersInitialized = false;
 
@@ -29,11 +37,17 @@ class PyramidVoipManager extends ChangeNotifier implements WebRTCDelegate {
   String? _selectedSourceId;
   String _currentQualityKey = 'hd';
 
+  @override
   bool get isMicMuted => _isMicMuted;
+  @override
   bool get isCameraMuted => _isCameraMuted;
+  @override
   bool get isScreensharing => _isScreensharing;
+  @override
   bool get isRemoteScreensharing => _isRemoteScreensharing;
+  @override
   bool get isDeafened => _isDeafened;
+  @override
   String get currentQualityKey => _currentQualityKey;
 
   PyramidVoipManager(this.client) {
@@ -253,6 +267,7 @@ class PyramidVoipManager extends ChangeNotifier implements WebRTCDelegate {
 
   /// Wendet die in den Einstellungen gewählte Ausgabelautstärke auf den
   /// Remote-Audio-Stream an. Ohne [value] wird der Pref-Wert gelesen.
+  @override
   Future<void> applyOutputVolume([double? value]) async {
     var v = value;
     if (v == null) {
@@ -295,6 +310,7 @@ class PyramidVoipManager extends ChangeNotifier implements WebRTCDelegate {
   @override
   Future<void> registerListeners(CallSession session) async {}
 
+  @override
   Future<void> safeAction(Future<dynamic> Function() action) async {
     try {
       await action();
@@ -306,6 +322,7 @@ class PyramidVoipManager extends ChangeNotifier implements WebRTCDelegate {
     _updateRenderers();
   }
 
+  @override
   Future<void> toggleMic() async {
     if (currentCall == null) return;
     _isMicMuted = !_isMicMuted;
@@ -318,6 +335,7 @@ class PyramidVoipManager extends ChangeNotifier implements WebRTCDelegate {
     }
   }
 
+  @override
   Future<void> toggleCamera() async {
     if (currentCall == null) return;
     _isCameraMuted = !_isCameraMuted;
@@ -337,6 +355,7 @@ class PyramidVoipManager extends ChangeNotifier implements WebRTCDelegate {
     await _updateRenderers();
   }
 
+  @override
   Future<void> toggleScreenSharing([BuildContext? context]) async {
     if (currentCall == null) return;
     final call = currentCall!;
@@ -359,11 +378,13 @@ class PyramidVoipManager extends ChangeNotifier implements WebRTCDelegate {
     });
   }
 
+  @override
   Future<void> toggleDeafen() async {
     _isDeafened = !_isDeafened;
     notifyListeners();
   }
 
+  @override
   Future<void> hangup() async {
     if (currentCall == null) return;
     await safeAction(() async {
@@ -372,6 +393,7 @@ class PyramidVoipManager extends ChangeNotifier implements WebRTCDelegate {
     });
   }
 
+  @override
   Future<void> startCall(String roomId, {bool video = false}) async {
     final room = client.getRoomById(roomId);
     if (room == null) return;
@@ -394,6 +416,7 @@ class PyramidVoipManager extends ChangeNotifier implements WebRTCDelegate {
     notifyListeners();
   }
 
+  @override
   Future<void> changeQuality(String key) async {
     _currentQualityKey = key;
     if (currentCall == null) {

lib/features/chat/chat_view.dart

@@ -22,7 +22,8 @@ import 'package:pyramid/widgets/hover_region.dart';
 import 'package:pyramid/widgets/mxc_image.dart';
 
 import 'package:pyramid/core/notification_service.dart';
-import 'package:pyramid/core/voip_manager.dart';
+import 'package:pyramid/features/call_signaling/call_signaling_service.dart';
+import 'package:pyramid/features/voice_channel/voice_channel_service.dart';
 
 
 part 'view/chat_view_core.dart';

lib/features/chat/view/chat_header.dart

@@ -167,13 +167,13 @@ class _ChatHeader extends ConsumerWidget {
     if (room.isDirectChat) {
       // Use native Matrix VoIP for 1:1 DMs
       ref.read(viewModeProvider.notifier).state = ViewMode.voice;
-      await PyramidVoipManager.instance.startCall(room.id, video: cam);
+      await ref.read(callSignalingProvider).startCall(room.id, video: cam);
       return;
     }
 
     // Use LiveKit for group voice rooms
     ref.read(viewModeProvider.notifier).state = ViewMode.voice;
-    await ref.read(callStateProvider).startCall(
+    await ref.read(voiceChannelProvider).startCall(
       roomName: roomId,
       roomDisplayName: room.getLocalizedDisplayname(),
       identity: 'user_${DateTime.now().millisecondsSinceEpoch}',
@@ -576,7 +576,7 @@ class _DmExpandingHeaderState extends ConsumerState<_DmExpandingHeader> {
 
   void _startCall({required bool cam}) async {
     ref.read(viewModeProvider.notifier).state = ViewMode.voice;
-    await PyramidVoipManager.instance.startCall(widget.room.id, video: cam);
+    await ref.read(callSignalingProvider).startCall(widget.room.id, video: cam);
   }
 }
 

lib/features/rooms/panel/rooms_panel_core.dart

@@ -39,8 +39,8 @@ class _RoomsPanelState extends ConsumerState<RoomsPanel> {
     final pt = PyramidTheme.of(context);
     final roomsAsync = ref.watch(roomListProvider);
     final activeSpaceId = ref.watch(activeSpaceIdProvider);
-    final call = ref.watch(callStateProvider);
+    final call = ref.watch(voiceChannelProvider);
-    final voip = ref.watch(voipStateProvider);
+    final voip = ref.watch(callSignalingProvider);
 
     final isRealSpace = activeSpaceId != null &&
         activeSpaceId != 'dms' &&

lib/features/rooms/panel/rooms_space_list.dart

@@ -95,7 +95,7 @@ class _SpaceRoomsListState extends ConsumerState<_SpaceRoomsList> {
       if (jr.isVoice) {
         // LiveKit only needs the room id + a display name, so connect even if the
         // matrix room object hasn't synced locally yet.
-        final call = ref.read(callStateProvider);
+        final call = ref.read(voiceChannelProvider);
         if (call.isActive) await call.hangUp();
         ref.read(activeVoiceRoomIdProvider.notifier).state = jr.roomId;
         await call.startCall(
@@ -199,7 +199,7 @@ class _SpaceRoomsListState extends ConsumerState<_SpaceRoomsList> {
     }
 
     void joinVoiceChannel(Room room) async {
-      final call = ref.read(callStateProvider);
+      final call = ref.read(voiceChannelProvider);
       final activeVoice = ref.read(activeVoiceRoomIdProvider);
       // Toggle: leave if already in this channel
       if (call.isVoiceChannel && activeVoice == room.id) {

lib/features/rooms/rooms_panel.dart

@@ -11,6 +11,8 @@ import 'package:pyramid/core/matrix_client.dart';
 import 'package:pyramid/core/theme.dart';
 import 'package:pyramid/features/rooms/rooms_provider.dart';
 import 'package:pyramid/features/call/mini_call_widget.dart';
+import 'package:pyramid/features/call_signaling/call_signaling_service.dart';
+import 'package:pyramid/features/voice_channel/voice_channel_service.dart';
 import 'package:pyramid/features/rooms/user_panel.dart';
 import 'package:pyramid/features/spaces/space_admin_dialog.dart';
 import 'package:pyramid/widgets/create_join_dialog.dart';

lib/features/voice_channel/livekit_call_manager.dart

@@ -6,11 +6,14 @@ import 'package:livekit_client/livekit_client.dart';
 import 'package:matrix/matrix.dart' hide Room;
 import 'package:pyramid/core/ice_servers.dart';
 import 'package:pyramid/core/livekit_token.dart';
+import 'package:pyramid/features/voice_channel/voice_channel_service.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
 const _kVoicePresenceType = 'io.pyramid.voice.presence';
 
-class LiveKitCallManager with ChangeNotifier {
+/// Implementierung von [VoiceChannelService] (Modul `voice_channel`).
+/// Andere Module gehen ausschließlich über `voiceChannelProvider`.
+class LiveKitCallManager extends VoiceChannelService {
   static final LiveKitCallManager instance = LiveKitCallManager._();
   LiveKitCallManager._();
 
@@ -32,17 +35,24 @@ class LiveKitCallManager with ChangeNotifier {
   Room? _room;
   EventsListener<RoomEvent>? _roomEventListener;
   String _displayName = '';
+  @override
   bool isConnecting = false;
+  @override
   String? error;
+  @override
   bool isMuted = false;
+  @override
   bool isCameraOff = false;
+  @override
   bool isScreenSharing = false;
   String _localQualityKey = 'hd';
   String _subscribeQualityKey = 'auto'; // 'auto' | 'low' | 'medium' | 'high'
   String? _currentScreenShareSourceId;
   LocalVideoTrack? _screenShareTrack;
+  @override
   bool isDeafened = false;
   bool _mutedBeforeDeafen = false;
+  @override
   bool isVoiceChannel = false;
   String? _matrixRoomId;
   Client? _matrixClient;
@@ -50,12 +60,18 @@ class LiveKitCallManager with ChangeNotifier {
 
   Timer? _statsTimer;
 
+  @override
   bool get isActive => _room != null || isConnecting;
+  @override
   Room? get room => _room;
+  @override
   String? get currentRoomId => _matrixRoomId;
+  @override
   String get displayName => _displayName;
   bool get noiseSuppression => false;
+  @override
   String get currentQualityKey => _localQualityKey;
+  @override
   String get subscribeQualityKey => _subscribeQualityKey;
 
   VideoParameters get _currentQuality =>
@@ -122,6 +138,7 @@ class LiveKitCallManager with ChangeNotifier {
     }
   }
 
+  @override
   Future<void> startCall({
     required String roomName,
     required String roomDisplayName,
@@ -307,6 +324,7 @@ class LiveKitCallManager with ChangeNotifier {
   double _outputVolume = 1.0;
 
   /// Live-Anwendung des Lautstärke-Sliders auf alle Remote-Audio-Tracks.
+  @override
   Future<void> setOutputVolume(double v) async {
     _outputVolume = v;
     final room = _room;
@@ -323,6 +341,7 @@ class LiveKitCallManager with ChangeNotifier {
     }
   }
 
+  @override
   Future<void> setSubscribeQuality(String key) async {
     debugPrint('[LiveKit] Viewer changing subscribe quality to: $key');
     _subscribeQualityKey = key;
@@ -340,12 +359,14 @@ class LiveKitCallManager with ChangeNotifier {
     notifyListeners();
   }
 
+  @override
   Future<void> toggleMute() async {
     isMuted = !isMuted;
     notifyListeners();
     await _room?.localParticipant?.setMicrophoneEnabled(!isMuted);
   }
 
+  @override
   Future<void> toggleDeafen() async {
     if (!isDeafened) {
       _mutedBeforeDeafen = isMuted;
@@ -377,6 +398,7 @@ class LiveKitCallManager with ChangeNotifier {
     }
   }
 
+  @override
   Future<void> toggleCamera() async {
     if (isCameraOff) {
       try {
@@ -399,6 +421,7 @@ class LiveKitCallManager with ChangeNotifier {
     notifyListeners();
   }
 
+  @override
   Future<void> toggleScreenShare() async {
     if (isScreenSharing) {
       await stopScreenShare();
@@ -426,6 +449,7 @@ class LiveKitCallManager with ChangeNotifier {
         const VideoEncoding(maxBitrate: 1_500_000, maxFramerate: 15);
   }
 
+  @override
   Future<void> startScreenShare(String sourceId) async {
     if (isScreenSharing) return;
     try {
@@ -480,6 +504,7 @@ class LiveKitCallManager with ChangeNotifier {
     }
   }
 
+  @override
   Future<void> stopScreenShare() async {
     final local = _room?.localParticipant;
     if (local != null) {
@@ -501,6 +526,7 @@ class LiveKitCallManager with ChangeNotifier {
     notifyListeners();
   }
 
+  @override
   Future<void> hangUp() async {
     _stopStatsLogging();
     _presenceHeartbeat?.cancel();
@@ -529,6 +555,7 @@ class LiveKitCallManager with ChangeNotifier {
     notifyListeners();
   }
 
+  @override
   Future<void> changeQuality(String qualityKey) async {
     debugPrint('[LiveKit] Streamer changing publish quality to: $qualityKey');
     _localQualityKey = qualityKey;
@@ -562,6 +589,7 @@ class LiveKitCallManager with ChangeNotifier {
     notifyListeners();
   }
 
+  @override
   Future<void> changeAudioInput(String deviceId) async {
     final participant = _room?.localParticipant;
     if (participant == null) return;
@@ -575,6 +603,7 @@ class LiveKitCallManager with ChangeNotifier {
     } catch (e) { debugPrint('[Audio] error: $e'); }
   }
 
+  @override
   void setRemoteVolume(double volume) {
     if (_room == null) return;
     final mute = volume < 0.05;

lib/features/voice_channel/voice_channel_service.dart

@@ -0,0 +1,74 @@
+import 'package:flutter/foundation.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:livekit_client/livekit_client.dart' as lk;
+import 'package:matrix/matrix.dart' hide Room;
+import 'package:pyramid/features/voice_channel/livekit_call_manager.dart';
+
+/// Öffentliche Schnittstelle des Moduls `voice_channel` – LiveKit-SFU-basierte,
+/// dauerhafte Voice-Channels (Discord-artig: Presence über Matrix-State-Events,
+/// Screensharing, Mehrpersonen). Schnitt nach `docs/M2_MODULE_SCHNITT.md`;
+/// bewusst GETRENNT vom 1:1-Modul `call_signaling`, siehe dort.
+///
+/// Andere Module konsumieren ausschließlich diese Schnittstelle über
+/// [voiceChannelProvider] – nie `livekit_call_manager.dart` direkt.
+///
+/// Bewusste Abweichungen vom Entwurf im Doc (Verhaltensgleichheit vor
+/// Schönheit): ChangeNotifier statt `stateStream`, Methodennamen wie im
+/// Bestand (`startCall`/`hangUp` statt `join`/`leave`), und [room] bleibt
+/// als LiveKit-Typ sichtbar, weil die Teilnehmer-Kacheln der UI direkt
+/// LiveKit-Tracks rendern (analog zu den WebRTC-Renderern im Signaling).
+abstract class VoiceChannelService extends ChangeNotifier {
+  bool get isActive;
+  bool get isConnecting;
+  String? get error;
+  bool get isMuted;
+  bool get isCameraOff;
+  bool get isScreenSharing;
+  bool get isDeafened;
+  bool get isVoiceChannel;
+
+  /// Der verbundene LiveKit-Raum (null = nicht verbunden).
+  lk.Room? get room;
+
+  /// Matrix-Raum-ID des aktiven Voice-Channels.
+  String? get currentRoomId;
+  String get displayName;
+
+  /// Sende-Qualität ('sd' | 'hd' | 'fhd' | '4k').
+  String get currentQualityKey;
+
+  /// Empfangs-Qualität ('auto' | 'low' | 'medium' | 'high').
+  String get subscribeQualityKey;
+
+  Future<void> startCall({
+    required String roomName,
+    required String roomDisplayName,
+    required String identity,
+    bool audioOnly,
+    bool voiceChannel,
+    Client? matrixClient,
+    String? matrixRoomId,
+  });
+  Future<void> hangUp();
+
+  Future<void> toggleMute();
+  Future<void> toggleDeafen();
+  Future<void> toggleCamera();
+  Future<void> toggleScreenShare();
+  Future<void> startScreenShare(String sourceId);
+  Future<void> stopScreenShare();
+
+  Future<void> changeQuality(String qualityKey);
+  Future<void> setSubscribeQuality(String key);
+
+  /// Live-Anwendung des Lautstärke-Sliders auf alle Remote-Audio-Tracks.
+  Future<void> setOutputVolume(double v);
+  Future<void> changeAudioInput(String deviceId);
+  void setRemoteVolume(double volume);
+}
+
+/// Einziger Zugriffsweg der UI auf das Voice-Channel-Modul.
+final voiceChannelProvider =
+    ChangeNotifierProvider<VoiceChannelService>((ref) {
+  return LiveKitCallManager.instance;
+});

lib/layout/app_shell.dart

@@ -9,9 +9,10 @@ import 'package:pretty_qr_code/pretty_qr_code.dart';
 import 'package:pyramid/core/app_state.dart';
 import 'package:pyramid/core/matrix_client.dart';
 import 'package:pyramid/core/theme.dart';
-import 'package:pyramid/core/voip_manager.dart';
 import 'package:pyramid/features/auth/bootstrap_dialog.dart';
 import 'package:pyramid/features/call/voice_channel.dart';
+import 'package:pyramid/features/call_signaling/call_signaling_service.dart';
+import 'package:pyramid/features/voice_channel/voice_channel_service.dart';
 import 'package:pyramid/features/chat/chat_view.dart';
 import 'package:pyramid/features/members/members_panel.dart';
 import 'package:pyramid/features/rooms/rooms_panel.dart';
@@ -160,7 +161,7 @@ class _AppShellState extends ConsumerState<AppShell>
     // notifyListeners (u.a. Render-Timer im Sekundentakt); ohne Flankenerkennung
     // würde der Nutzer permanent zurück in die Call-UI gezwungen und könnte
     // sie nie minimieren.
-    ref.listen(voipStateProvider, (prev, next) {
+    ref.listen(callSignalingProvider, (prev, next) {
       final wasConnected = _wasVoipConnected;
       final isConnected = next.currentCall != null &&
           next.currentCall!.state == CallState.kConnected;
@@ -172,7 +173,7 @@ class _AppShellState extends ConsumerState<AppShell>
       }
     });
 
-    ref.listen(callStateProvider, (prev, next) {
+    ref.listen(voiceChannelProvider, (prev, next) {
       // Only auto-switch to voice view for video/audio calls, NOT voice channels
       // (voice channels should stay in background with a mini bar)
       final wasActive = _wasLiveKitActive;
@@ -200,7 +201,7 @@ class _AppShellState extends ConsumerState<AppShell>
     final activeModal = ref.watch(activeModalProvider);
     final membersOpen = ref.watch(membersPanelOpenProvider);
     final innerPt = PyramidTheme.of(context);
-    final voip = ref.watch(voipStateProvider);
+    final voip = ref.watch(callSignalingProvider);
 
     final size = MediaQuery.sizeOf(context);
     final isMobile = size.width < 900 || size.height < 500;
@@ -332,7 +333,7 @@ class _MobileShell extends ConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
-    final voip = ref.watch(voipStateProvider);
+    final voip = ref.watch(callSignalingProvider);
 
     Widget body;
     if (viewMode == ViewMode.voice) {
@@ -456,7 +457,7 @@ class _NotificationBlockedBanner extends ConsumerWidget {
 
 class _IncomingCallOverlay extends ConsumerWidget {
   final CallSession call;
-  final PyramidVoipManager voip;
+  final CallSignalingService voip;
   final PyramidTheme pt;
 
   const _IncomingCallOverlay({

lib/widgets/settings/settings_voice.dart

@@ -1,14 +1,14 @@
 part of '../settings_modal.dart';
 
-class _VoiceSection extends StatefulWidget {
+class _VoiceSection extends ConsumerStatefulWidget {
   final PyramidTheme pt;
   const _VoiceSection({required this.pt});
 
   @override
-  State<_VoiceSection> createState() => _VoiceSectionState();
+  ConsumerState<_VoiceSection> createState() => _VoiceSectionState();
 }
 
-class _VoiceSectionState extends State<_VoiceSection> {
+class _VoiceSectionState extends ConsumerState<_VoiceSection> {
   List<MediaDeviceInfo> _audioInputs = [];
   List<MediaDeviceInfo> _audioOutputs = [];
   List<MediaDeviceInfo> _videoInputs = [];
@@ -89,10 +89,10 @@ class _VoiceSectionState extends State<_VoiceSection> {
     setState(() => _outputVolume = v);
     final prefs = await SharedPreferences.getInstance();
     await prefs.setDouble(_kOutputVolume, v);
-    // Live auf laufende Calls anwenden.
+    // Live auf laufende Calls anwenden (über die Modul-Fassaden).
-    LiveKitCallManager.instance.setOutputVolume(v).catchError((_) {});
+    ref.read(voiceChannelProvider).setOutputVolume(v).catchError((_) {});
     try {
-      PyramidVoipManager.instance.applyOutputVolume(v).catchError((_) {});
+      ref.read(callSignalingProvider).applyOutputVolume(v).catchError((_) {});
     } catch (_) {} // Instanz existiert evtl. noch nicht
   }
 

lib/widgets/settings_modal.dart

@@ -24,9 +24,9 @@ import 'package:pyramid/core/app_state.dart';
 import 'package:pyramid/core/auth_log.dart';
 import 'package:pyramid/core/e2ee_diagnostics.dart';
 import 'package:pyramid/features/auth/bootstrap_dialog.dart' show isKeyBackupMissing;
-import 'package:pyramid/core/livekit_call_manager.dart';
+import 'package:pyramid/features/call_signaling/call_signaling_service.dart';
+import 'package:pyramid/features/voice_channel/voice_channel_service.dart';
 import 'package:pyramid/core/matrix_client.dart';
-import 'package:pyramid/core/voip_manager.dart';
 import 'package:pyramid/core/settings_prefs.dart';
 import 'package:pyramid/core/theme.dart';
 import 'package:pyramid/core/update_checker.dart';