fix: move VAD agent creation to RI communication agent

Previously, it was started in main, but it should use values negotiated by the RI communication agent.

ref: N25B-356

src/control_backend/main.py

@@ -39,13 +39,11 @@ from control_backend.agents.communication import RICommunicationAgent
 # LLM Agents
 from control_backend.agents.llm import LLMAgent
 
-# Perceive agents
-from control_backend.agents.perception import VADAgent
-
 # Other backend imports
 from control_backend.api.v1.router import api_router
 from control_backend.core.config import settings
 from control_backend.logging import setup_logging
+from control_backend.schemas.program_status import PROGRAM_STATUS, ProgramStatus
 
 logger = logging.getLogger(__name__)
 
@@ -95,6 +93,8 @@ async def lifespan(app: FastAPI):
     endpoints_pub_socket.connect(settings.zmq_settings.internal_pub_address)
     app.state.endpoints_pub_socket = endpoints_pub_socket
 
+    await endpoints_pub_socket.send_multipart([PROGRAM_STATUS, ProgramStatus.STARTING.value])
+
     # --- Initialize Agents ---
     logger.info("Initializing and starting agents.")
 
@@ -132,10 +132,6 @@ async def lifespan(app: FastAPI):
                 "name": settings.agent_settings.text_belief_extractor_name,
             },
         ),
-        "VADAgent": (
-            VADAgent,
-            {"audio_in_address": settings.zmq_settings.vad_agent_address, "audio_in_bind": False},
-        ),
         "ProgramManagerAgent": (
             BDIProgramManager,
             {
@@ -146,32 +142,28 @@ async def lifespan(app: FastAPI):
 
     agents = []
 
-    vad_agent = None
-
     for name, (agent_class, kwargs) in agents_to_start.items():
         try:
             logger.debug("Starting agent: %s", name)
             agent_instance = agent_class(**kwargs)
             await agent_instance.start()
-            if isinstance(agent_instance, VADAgent):
-                vad_agent = agent_instance
             agents.append(agent_instance)
             logger.info("Agent '%s' started successfully.", name)
         except Exception as e:
             logger.error("Failed to start agent '%s': %s", name, e, exc_info=True)
             raise
 
-    assert vad_agent is not None
-    await vad_agent.reset_stream()
-
     logger.info("Application startup complete.")
 
+    await endpoints_pub_socket.send_multipart([PROGRAM_STATUS, ProgramStatus.RUNNING.value])
+
     yield
 
     # --- APPLICATION SHUTDOWN ---
     logger.info("%s is shutting down.", app.title)
 
-    # Potential shutdown logic goes here
+    await endpoints_pub_socket.send_multipart([PROGRAM_STATUS, ProgramStatus.STOPPING.value])
+    # Additional shutdown logic goes here
 
     logger.info("Application shutdown complete.")