chore: apply suggestion

Changed `add_background_task` to `add_behavior` and added extra docs.

test/unit/agents/actuation/test_robot_speech_agent.py

@@ -35,7 +35,7 @@ async def test_setup_bind(zmq_context, mocker):
             coro.close()
 
     swallow = Swallow()
-    agent.add_background_task = swallow
+    agent.add_behavior = swallow
 
     await agent.setup()
 
@@ -62,7 +62,7 @@ async def test_setup_connect(zmq_context, mocker):
             coro.close()
 
     swallow = Swallow()
-    agent.add_background_task = swallow
+    agent.add_behavior = swallow
 
     await agent.setup()
 

test/unit/agents/communication/test_ri_communication_agent.py

@@ -55,7 +55,7 @@ async def test_setup_success_connects_and_starts_robot(zmq_context):
                 coro.close()
 
         swallow = Swallow()
-        agent.add_background_task = swallow
+        agent.add_behavior = swallow
 
         await agent.setup()
 
@@ -85,7 +85,7 @@ async def test_setup_binds_when_requested(zmq_context):
             coro.close()
 
     swallow = Swallow()
-    agent.add_background_task = swallow
+    agent.add_behavior = swallow
 
     with patch(speech_agent_path(), autospec=True) as MockRobot:
         MockRobot.return_value.start = AsyncMock()
@@ -213,7 +213,7 @@ async def test_setup_warns_on_failed_negotiate(zmq_context, mocker):
     async def swallow(coro):
         coro.close()
 
-    agent.add_background_task = swallow
+    agent.add_behavior = swallow
     agent._negotiate_connection = AsyncMock(return_value=False)
 
     await agent.setup()

test/unit/agents/perception/transcription_agent/test_transcription_agent.py

@@ -36,7 +36,7 @@ async def test_transcription_agent_flow(mock_zmq_context):
         agent.send = AsyncMock()
 
         agent._running = True
-        agent.add_background_task = AsyncMock()
+        agent.add_behavior = AsyncMock()
 
         await agent.setup()