Summary

This PR removes the icon_url from the url source block element to match the expected API and also updates an internal chat_stream variable for maintenance ongoing.

The plan_id is also removed from the plan block.

Testing

Build these changes and stream a message with this app:

$ slack create slack-samples/bolt-python-assistant-template --branch feat-ai-apps-thinking-steps

Category

• slack_sdk.web.WebClient (sync/async) (Web API client)
• slack_sdk.models (UI component builders)
• /docs (Documents)
• tests/integration_tests (Automated tests for this library)

Notes

No update was made for an append without either "chunks" or "markdown_text" following discussion of #1809. With logging set to "debug" we might find an alright hint that the buffer is unchanged:

...
DEBUG:slack_sdk.web.base_client:ChatStream appended to buffer: {"buffer_length": 0, "buffer_size": 256, "channel": "D0A86GYHLG5", "recipient_team_id": "T02A074M3U3", "recipient_user_id": "U04051AF9NJ", "thread_ts": "1769060200.942659"}
DEBUG:slack_sdk.web.base_client:ChatStream appended to buffer: {"buffer_length": 0, "buffer_size": 256, "channel": "D0A86GYHLG5", "recipient_team_id": "T02A074M3U3", "recipient_user_id": "U04051AF9NJ", "thread_ts": "1769060200.942659"}
DEBUG:slack_sdk.web.base_client:ChatStream appended to buffer: {"buffer_length": 0, "buffer_size": 256, "channel": "D0A86GYHLG5", "recipient_team_id": "T02A074M3U3", "recipient_user_id": "U04051AF9NJ", "thread_ts": "1769060200.942659"}
...

Requirements

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.
• I've run python3 -m venv .venv && source .venv/bin/activate && ./scripts/run_validation.sh after making the changes.