fix: XTTS bridge splits text into sentences sequentially

- XTTS-Bridge does sentence splitting (not ARIA-Bridge)
- Sequential rendering: correct order guaranteed
- Each sentence sent as separate xtts_response
- Markdown removal before splitting
- App starts playback after first sentence (faster UX)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

bridge/aria_bridge.py

@@ -851,27 +851,20 @@ class ARIABridge:
             tts_engine = getattr(self, 'tts_engine_type', 'piper')
 
             if tts_engine == "xtts":
-                # XTTS: Lange Texte satzweise aufteilen (WebSocket-Limit + schnellere Wiedergabe)
-                import re as _re
+                # XTTS: Ganzen Text senden, XTTS-Bridge teilt satzweise auf
                 xtts_voice = getattr(self, 'xtts_voice', '')
-                clean_text = _re.sub(r'\*\*([^*]+)\*\*', r'\1', text).strip()
-                sentences = _re.split(r'(?<=[.!?])\s+', clean_text)
-                sentences = [s.strip() for s in sentences if s.strip()]
-                if not sentences:
-                    sentences = [clean_text]
                 try:
-                    for sentence in sentences:
-                        await self._send_to_rvs({
-                            "type": "xtts_request",
-                            "payload": {
-                                "text": sentence,
-                                "voice": xtts_voice,
-                                "language": "de",
-                                "requestId": str(uuid.uuid4()),
-                            },
-                            "timestamp": int(asyncio.get_event_loop().time() * 1000),
-                        })
-                    logger.info("[core] XTTS-Request gesendet (%s, %d Saetze): '%s'", xtts_voice or "default", len(sentences), text[:60])
+                    await self._send_to_rvs({
+                        "type": "xtts_request",
+                        "payload": {
+                            "text": text,
+                            "voice": xtts_voice,
+                            "language": "de",
+                            "requestId": str(uuid.uuid4()),
+                        },
+                        "timestamp": int(asyncio.get_event_loop().time() * 1000),
+                    })
+                    logger.info("[core] XTTS-Request gesendet (%s): '%s'", xtts_voice or "default", text[:60])
                 except Exception as e:
                     logger.warning("[core] XTTS-Request fehlgeschlagen: %s — Fallback auf Piper", e)
                     # Fallback auf Piper