fix: remove icon_url from url source block element and plan_id from plan block and update chat stream variable

[zimeg]

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.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (feat-ai-apps-thinking-steps@610de5b). Learn more about missing BASE report.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@ Coverage Diff @@## feat-ai-apps-thinking-steps #1822 +/- ##
==============================================================
Coverage ? 83.96% ==============================================================
Files ? 116 Lines ? 13221 Branches ? 0 ==============================================================
Hits ? 11101 Misses ? 2120 Partials ? 0 

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[srtaalej]

LGTM 🎆

[srtaalej]

💯

[mwbrooks]

This is a much better name choice and it adds clarity around what will be flushed.

[mwbrooks]

✅ Great work! A nice clean removal of icon_url and plan_id. The refactor to chunks_to_flush also makes the code more readable.

📝 Just a note for our future selves - icon_url and plan_id are internal properties that aren't available on the public API yet. So, there are no breaking changes.

🧪 Test coverage looks great and this has no impact on our sample app. 🚀

[mwbrooks]

This is a much better name choice and it adds clarity around what will be flushed.

[zimeg]

@srtaalej@mwbrooks Thanks both so much for these reviews and findings in past review. I'll merge this now to match our current expectations for the API but we might keep watch for the plan_id support before next release 🫡