fix: Bridge chat handler was missing send_to_core (text messages ignored)

The chat handler checked sender but never forwarded the text to aria-core.
Only voice messages worked because they went through the audio→STT→send_to_core path.

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

bridge/aria_bridge.py

@@ -1045,6 +1045,11 @@ class ARIABridge:
             sender = payload.get("sender", "")
             if sender in ("aria", "stt"):
                 return
+            text = payload.get("text", "")
+            if text:
+                logger.info("[rvs] App-Chat: '%s'", text[:80])
+                await self.send_to_core(text, source="app")
+            return
 
         elif msg_type == "xtts_response":
             # XTTS-Audio vom Gaming-PC empfangen → an App weiterleiten