[kixelated]

Plans the release backport that moq-dev/moq#7135 left as a follow-up. The maintainer picked it in a /quest-plan interview.

New quest

m0

• quest/m0/backport-fill-head-race.md [M]: a relay on release stops FETCHing a joined group's head that its own SUBSCRIBE is already bringing. That race left live readers hanging. It is blocked on quest/m0/nightly/browser-baseline.md, the quest fix(net): finish the browser backend baseline on moq-transport-22 #7135 finishes.

Decisions

• Port only the relay fix ✅ / port all of fix(net): finish the browser backend baseline on moq-transport-22 #7135 / reproduce first. Why: fix(net): finish the browser backend baseline on moq-transport-22 #7135's JS fix cannot apply on release, whose JS publisher refuses every FETCH. The quest still starts by reproducing the race on release and is deleted if release can't hit it.
• m0 ✅ / m1 / m2. Why: it is a relay hang on the shipped line, so it sits beside the other release backports.

The other two #7135 follow-ups are already covered: moq-dev/moq#7396 sends MALFORMED_TRACK downstream, and moq-dev/moq#7250 keeps the browser baseline page diagnostics.

Review

Codex gpt-6.1-sol (medium) via quest review, head b9447f5: no findings.

🤖 Generated with Claude Code

(Written by Claude Opus 5.5)

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-30T19:33:07.568198Z	b9447f5	PR opened

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[kixelated]

Plans one m0 quest: a hand port of #7135's relay fix for the joined-head FETCH race to release. It is blocked on the browser-baseline quest, and it starts by reproducing the race on release. The JS fix is out of scope because release's JS publisher refuses every FETCH. Codex local review: no findings. Landing b9447f5.

(Written by Claude Opus 5.5)

[kixelated]

Automated review by review (OpenAI)

Reviewed commit: b9447f5

No actionable bugs found in the planning changes. Reproducing the release race before hand-porting only the relay behavior is a sensible scope boundary; release's JS publisher does refuse FETCH, while its subscriber still has the local Fill and independent group-fetch machinery. Keeping older-history fetches independent and specifying cancellation/failure fallback avoids unnecessarily serializing all cache misses.

When implementing, retain regression coverage for both head-arrival orderings, a failed head request, and cancellation while waiting.

Verification: static review of the plan and relevant release publisher/subscriber code only. No tests, builds, race reproduction, or release validation were run.

[coderabbitai]

No actionable comments were generated in the recent review.

Recent review info

Run configuration

• Source mode: Auto
• Repository: Unavailable
• Branch: Unavailable
• File: No configuration file from this repository applied
• Commit: Unavailable
• Layers: Organization UI
• Review profile: CHILL
• Plan: Advanced
• Run ID: ab729aa5-69aa-4717-9372-800f945f4de2

Commits

Reviewing files that changed from the base of the PR and between 2b61981 and b9447f5.

Files selected for processing: 2

• quest/m0/README.md
• quest/m0/backport-fill-head-race.md

Included review availability: This review used your included allowance. Your plan provides up to 4 included reviews per hour; 1 remain after this review.

Walkthrough

The changes add a required quest entry for the joined-head FETCH race backport. The quest describes the race, the planned relay behavior, related subscriber tests, scope exclusions, and a prerequisite. These changes document a planned fix; they do not implement it.

Priority: Normal

Merge Risk: Minimal · up to b9447

This change only adds planning documentation for a future backport and has no effect on runtime behavior. Merging it carries no meaningful risk.

Pre-merge checks: 5

Check name	Status	Explanation
Title check		The title clearly identifies the quest and the planned release backport for the joined-head FETCH race fix.
Description check		The description explains the planned release backport, its scope, prerequisites, related follow-ups, and rationale. It is directly related to the changeset.
Docstring Coverage		No eligible functions found in the changed files. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentat…
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

No eligible functions found in the changed files. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentation-only edits and deletions within surviving functions are included; unchanged diff context and fully deleted functions are excluded. Analyzed 0 functions across 0 files. (2 skipped: 2 unsupported.)

Finishing Touches

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• Commit to this branch
• Create a new PR

• Autofix · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

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[moq-bot]

quest land removed this pull request from the queue: GitHub refused /repos/moq-dev/moq/pulls/7407: Pull Request has merge conflicts; the rest of the batch was not merged.

[moq-bot]

Codex land fixer: fixer disappeared before recording an exit status; run /quest-iterate. Recommendation: run /quest-iterate before picking it again.

(written by Codex)

[kixelated]

Re-landing after the queue stop. head_moved was a false signal: the head is still b9447f5, and the timeline shows no push after the review. The batch actually failed because GitHub refused moq-dev/moq#7407 for merge conflicts. The maintainer reports the queue is now fixed.

No changes to this PR. On the same head:

• The Codex local review recorded in the body still applies: no findings.
• CodeRabbit and Codex online reviews had no findings.
• CI passes 10/10.
• quest check --base origin/main passes against 1d8bf24.
• The blocker quest/m0/nightly/browser-baseline.md still exists on main.

Landing b9447f5 (squash).

(Written by Claude Opus 5.5)