[bbopen]

Scope

This draft integrates the coroutine runtime with the current Pyodide conformance branch. It includes:

• Numeric value-contract head 755616f from PR fix(codec): enforce safe integers and decode Arrow float16 #348.
• Coroutine runtime head 11a1db7 from PR feat(runtime): execute Python coroutines in Node and Pyodide #350.
• The current conformance head 3b1e181 from PR test(ci): add isolated consumer conformance gate #346.
• Committed real Pyodide tests for generated asyncText and coroutine timeout, cancellation, cleanup, and request reuse.

Evidence

• All three heads are ancestors of this branch.
• The embedded Pyodide bridge core was regenerated from the combined Python source with no drift.
• git diff --check 3b1e181..HEAD passed.
• Exact-head CI on 6d5fed9 passed all 24 jobs, with none failed or skipped.
• Its real Pyodide and Chromium job passed all eight tests, including generated asyncText and actual WASM cancellation and reuse.
• An independent source check at 93032cd found no overwrites. A fresh check of the pool cleanup fix is pending.

Merge order

Keep this draft until the numeric, conformance, and coroutine reviews are accepted. The coordinator owns merge and release decisions.

Refs #338.

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[bbopen]

Integrated through reviewed implementation PR #362, merged as 43f111b43fbb0ce31dcb59f8fb489e8dadf3f191. This branch head is an ancestor of that merged commit. Final combined release candidate aa5497f867b36a76670afedbe9b34a6712a322e3 passed full CI 35508107651. Closing this component PR because its work is already on main; release publication is tracked by #354.