Ohr-Button Absturz gefixt (LiveAudioStream entfernt, Phase 1 , Play-Button in ARIA-Nachrichten fuer Sprachwiedergabe

- [x] Chat-Suche in der App (Lupe in Statusleiste)
- [x] Watchdog mit Container-Restart (2min Warnung → 5min doctor --fix → 8min Restart),Abbrechen-Button im Diagnostic Chat
- [x] Nachrichten Backup on-the-fly (/shared/config/chat_backup.jsonl)
- [x] Grosse Nachrichten satzweise aufteilen fuer TTS
- [x] RVS Nachrichten vom Smartphone gehen durch

bridge/aria_bridge.py

@@ -1014,6 +1014,30 @@ class ARIABridge:
             if sender in ("aria", "stt"):
                 return
 
+        elif msg_type == "tts_request":
+            # App fordert TTS-Audio fuer einen Text an (Play-Button)
+            text = payload.get("text", "")
+            requested_voice = payload.get("voice", "")
+            if text:
+                voice_name = requested_voice or self.voice_engine.select_voice(text)
+                audio_data = self.voice_engine.synthesize(text, voice_name)
+                if audio_data:
+                    audio_b64 = base64.b64encode(audio_data).decode("ascii")
+                    try:
+                        await self._send_to_rvs({
+                            "type": "audio",
+                            "payload": {
+                                "base64": audio_b64,
+                                "mimeType": "audio/wav",
+                                "voice": voice_name,
+                            },
+                            "timestamp": int(asyncio.get_event_loop().time() * 1000),
+                        })
+                        logger.info("[rvs] TTS on-demand: %d bytes (%s)", len(audio_data), voice_name)
+                    except Exception as e:
+                        logger.warning("[rvs] TTS on-demand senden fehlgeschlagen: %s", e)
+            return
+
         elif msg_type == "config":
             # Konfiguration von App/Diagnostic empfangen + persistent speichern
             changed = False