- Enhance Feishu card builder to embed images using remote URLs or uploaded files
- Add logic to send image card first, then file attachment when both image and file are present
- Update card schema to 2.0 and use new button behaviors for callbacks and URLs
- Improve callback data extraction for both new and legacy card actions
- Extend tests to cover image embedding, mixed messages, and new card structure
- Update stop_streaming logic to await inflight initial flush task, preventing duplicate message sends on stream stop
- Change message edit/delete methods to return Optional[bool] for clearer channel mismatch handling
- Refine Feishu logging to include message_id instead of full data object
- Suppress allowed_objects warnings in __init__.py
- Add test to verify stop_streaming waits for inflight flush before final edit
- Update .pylintrc to use 'E' for error enabling
