fix: use RoomOptions instead of deprecated RoomInputOptions

RoomInputOptions is deprecated in livekit-agents 1.4.x. Switch to
RoomOptions with explicit audio_input/audio_output enabled.

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

packages/services/voice-agent/src/agent.py

@@ -160,7 +160,9 @@ async def entrypoint(ctx: JobContext) -> None:
     await session.start(
         agent=IT0VoiceAgent(),
         room=ctx.room,
-        room_input_options=room_io.RoomInputOptions(
+        room_options=room_io.RoomOptions(
+            audio_input=True,
+            audio_output=True,
             participant_identity=participant.identity,
         ),
     )