test: temporarily disable E2EE to isolate audio pipeline issue

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

voice.py

@@ -186,16 +186,12 @@ class VoiceSession:
                         break
                     await asyncio.sleep(0.1)
 
+            # TEMPORARY: Disable E2EE to test if audio pipeline works
             if self._e2ee_key:
-                shared_key = self._e2ee_key
-                logger.info("Using caller E2EE key (%d bytes)", len(shared_key))
-                # Republish caller's key as our own so both sides share the same key
+                logger.info("Caller E2EE key available (%d bytes) — but E2EE DISABLED for testing",
+                            len(self._e2ee_key))
                 if self._publish_key_cb:
-                    self._publish_key_cb(shared_key)
-                e2ee_opts = _build_e2ee_options(shared_key)
-            else:
-                # No key received — connect WITHOUT E2EE so at least audio works
-                logger.warning("No caller E2EE key received — connecting WITHOUT encryption")
+                    self._publish_key_cb(self._e2ee_key)
             e2ee_opts = None
 
             room_opts = rtc.RoomOptions(e2ee=e2ee_opts)