Convert remaining camelCase usage to snake_case

Author: holtskinner

src/a2a/server/request_handlers/default_request_handler.py

@@ -200,10 +200,10 @@ async def _setup_message_execution(
                 )
 
             task = task_manager.update_with_message(params.message, task)
-        elif params.message.taskId:
+        elif params.message.task_id:
             raise ServerError(
                 error=TaskNotFoundError(
-                    message=f'Task {params.message.taskId} was specified but does not exist'
+                    message=f'Task {params.message.task_id} was specified but does not exist'
                 )
             )
 

tests/server/request_handlers/test_default_request_handler.py

@@ -1787,7 +1787,7 @@ async def test_on_resubscribe_to_task_in_terminal_state(terminal_state):
 
 @pytest.mark.asyncio
 async def test_on_message_send_task_id_provided_but_task_not_found():
-    """Test on_message_send when taskId is provided but task doesn't exist."""
+    """Test on_message_send when task_id is provided but task doesn't exist."""
     task_id = 'nonexistent_task'
     mock_task_store = AsyncMock(spec=TaskStore)
 
@@ -1800,7 +1800,7 @@ async def test_on_message_send_task_id_provided_but_task_not_found():
             role=Role.user,
             messageId='msg_nonexistent',
             parts=[Part(root=TextPart(text='Hello'))],
-            taskId=task_id,
+            task_id=task_id,
             contextId='ctx1',
         )
     )
@@ -1827,7 +1827,7 @@ async def test_on_message_send_task_id_provided_but_task_not_found():
 
 @pytest.mark.asyncio
 async def test_on_message_send_stream_task_id_provided_but_task_not_found():
-    """Test on_message_send_stream when taskId is provided but task doesn't exist."""
+    """Test on_message_send_stream when task_id is provided but task doesn't exist."""
     task_id = 'nonexistent_stream_task'
     mock_task_store = AsyncMock(spec=TaskStore)
 
@@ -1840,7 +1840,7 @@ async def test_on_message_send_stream_task_id_provided_but_task_not_found():
             role=Role.user,
             messageId='msg_nonexistent_stream',
             parts=[Part(root=TextPart(text='Hello'))],
-            taskId=task_id,
+            task_id=task_id,
             contextId='ctx1',
         )
     )