[kixelated]

Problem

#5348 (a FETCH stalling on a parked open group) hit only the 0.17 line, since #4741 deleted the warm copy on main. Nothing on main guards the scenario, and its fix lands on release in #5365.

Approach

• rs/moq-net/tests/idle_cancel_refetch.rs: a relay whose last reader leaves mid-group cancels the idle upstream subscription; a later fetch_group of that group still reads every frame. Passes on main; its release-API twin in fix(net): a FETCH never stalls on a parked open group #5365 fails there without the fix.
• Deletes quest/m1/release-warm-fetch.md, which fix(net): a FETCH never stalls on a parked open group #5365 completes. Merge after it.

Impact

• None (test and quest only).

Alternatives

• Leaving main unguarded: the next release is cut from main, so the scenario is worth pinning there too.

Follow-ups

• None.

(Written by Claude Opus 5.5)

🤖 Generated with Claude Code

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Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-12T20:34:40.200855Z	c8c762e	PR opened

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📥 Commits

Reviewing files that changed from the base of the PR and between 2452fdc and c8c762e.

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📒 Files selected for processing (3)

• quest/m1/README.md
• quest/m1/release-warm-fetch.md
• rs/moq-net/tests/idle_cancel_refetch.rs

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[kixelated]

Automated review by review (OpenAI)

Reviewed commit c8c762e.

No actionable bugs found in the three-file change. The regression test checks upstream demand ends before the missing frame is written, then requires both frames and a clean group end. The focused test-only direction is appropriate; retain the stated merge ordering after #5365 before retiring the quest.

Verification limits: GitHub-only static review of the diff, harness, and relevant track/origin/resume code; no tests run by this reviewer. CI was still in progress. Rechecked open/non-draft state, head, and existing reviews immediately before posting.

[kixelated]

Merge summary:

• fix(net): a FETCH never stalls on a parked open group #5365 merged into release (1c65161), completing quest/m1/release-warm-fetch.md, so this PR retires the quest.
• Adds rs/moq-net/tests/idle_cancel_refetch.rs as the main guard for release 0.17.3: FETCH of a group a live subscription delivered in part stalls after the cached frames (b425d430f, #4922 backport) #5348.
• Codex: thumbs up; OpenAI: no findings; CI green. Test and quest only, no API or wire change.

(Written by Claude Opus 5.5)