feat: stream_tool_updates option to show tool calls in playground chat (langflow-ai#10928)

* feat: add stream_tool_updates option to show tool calls in playground chat

- Add stream_tool_updates boolean input to agent configuration
- Make stream_tool_updates a keyword-only parameter in event handlers
- Update event processing to support real-time tool invocation visibility
- Add comprehensive unit tests for stream_tool_updates functionality
- Fix linting issues (line length, boolean arguments, whitespace)

* Fix AsyncMock lambda parameters in stream_tool_updates tests

- Changed lambda parameters from 'skip_db_update' to '**_kwargs'
- Fixes TypeError where handlers pass 'skip_db_update' but lambda expected different name
- Using underscore prefix to indicate intentionally unused parameter
- Affects 6 tests: test_handle_on_tool_start_with_stream_tool_updates_true/false,
  test_handle_on_tool_end_with_stream_tool_updates,
  test_handle_on_tool_error_with_stream_tool_updates,
  test_process_agent_events_with_stream_tool_updates (2 instances),
  test_handle_on_tool_start_keyword_only_parameter
- Addresses CodeRabbitAI feedback on PR

* Apply CodeRabbitAI recommendation for AsyncMock lambda parameters

- Use explicit 'skip_db_update=False' parameter instead of **_kwargs
- Add '# noqa: ARG005, FBT002' to suppress linter warnings
- ARG005: Unused lambda argument
- FBT002: Boolean default value in function definition
- Matches actual parameter name passed by event handlers
- Affects 6 tests in test_agent_events.py
- Follows CodeRabbitAI's recommended pattern for test mocks

* Rebuilt component index

* [autofix.ci] apply automated fixes

* [autofix.ci] apply automated fixes (attempt 2/3)

* [autofix.ci] apply automated fixes (attempt 3/3)

* Add component index

* [autofix.ci] apply automated fixes

* Update component index

* [autofix.ci] apply automated fixes

* [autofix.ci] apply automated fixes (attempt 2/3)

* [autofix.ci] apply automated fixes (attempt 3/3)

* chore: trigger build

* [autofix.ci] apply automated fixes

* chore: trigger build

* [autofix.ci] apply automated fixes

* [autofix.ci] apply automated fixes (attempt 2/3)

* Fix message serialization to correctly include content blocks before sending event

* skip db update on tool error

* revert events changes

* revert agent changes

* revert agent changes

* revert starter projcets

* starter / comp index updates

* [autofix.ci] apply automated fixes

* [autofix.ci] apply automated fixes (attempt 2/3)

* chore: trigger build

---------

Co-authored-by: Steve Haertel <shaertel@ca.ibm.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: Jordan Frazier <jordan.frazier@datastax.com>

Author: 4 people

src/lfx/src/lfx/custom/custom_component/component.py

@@ -1666,6 +1666,7 @@ async def send_message(self, message: Message, id_: str | None = None, *, skip_d
                     "The message must have been stored in the database previously."
                 )
                 raise ValueError(msg)
+
             # Create a fresh Message instance for consistency with normal flow
             stored_message = await Message.create(**message.model_dump())
             self._stored_message_id = stored_message.get_id()
@@ -1721,9 +1722,15 @@ async def _store_message(self, message: Message) -> Message:
 
     async def _send_message_event(self, message: Message, id_: str | None = None, category: str | None = None) -> None:
         if hasattr(self, "_event_manager") and self._event_manager:
-            data_dict = message.model_dump()["data"] if hasattr(message, "data") else message.model_dump()
-            if id_ and not data_dict.get("id"):
-                data_dict["id"] = id_
+            # Use full model_dump() to include all Message fields (content_blocks, properties, etc.)
+            data_dict = message.model_dump()
+
+            # The message ID is stored in message.data["id"], which ends up in data_dict["data"]["id"]
+            # But the frontend expects it at data_dict["id"], so we need to copy it to the top level
+            message_id = id_ or data_dict.get("data", {}).get("id") or getattr(message, "id", None)
+            if message_id and not data_dict.get("id"):
+                data_dict["id"] = message_id
+
             category = category or data_dict.get("category", None)
 
             def _send_event():