quest: plan backporting the moq-gst formula test fix to release

quest/m0/ci/README.md

@@ -177,6 +177,7 @@ The historical samples locate candidates; they are not controlled benchmarks.
 ## Required
 
 - [Read-only pull-request CI](/quest/m0/ci/read-only-secrets.md) - write secrets and publisher identities reach only protected branches and tags, never a pushed branch
+- [moq-gst releases publish again](/quest/m0/ci/gst-release-macos.md) - backport main's Homebrew formula test to `release`, so the macOS tarball job stops hanging and moq-gst GitHub releases publish
 - [Stop publishing to JSR](/quest/m0/ci/jsr-retire.md) - `@moq/*` publishes only to npm and the JSR packages are archived, so no JSR token or OIDC link remains
 - [Verify the R2 Rust cache](/quest/m0/ci/mbx-r2-verify.md) - confirm the hosted Nightly jobs reuse the previous Nightly, then measure restore time and expiry
 - [Verify the Nix runtime cache](/quest/m0/ci/nix-cache-verify.md) - hosted Cache uploads `main`'s relay and CLI, and Smoke's nix channel substitutes them

quest/m0/ci/gst-release-macos.md

@@ -0,0 +1,44 @@
+# [XS] moq-gst releases publish again
+
+## Goal
+
+`release` carries `main`'s Homebrew formula test, so a `moq-gst-v*` tag's
+`Build tarball (aarch64-apple-darwin)` job passes, its `Release` job publishes
+the GitHub release, and the next moq-gst release appears under the
+repository's releases.
+
+## Plan
+
+Found 2026-11-06 (/quest-unblock) while re-running
+[moq-dev/moq#7936](https://github.com/moq-dev/moq/pull/7936)'s failed tag runs.
+Every moq-gst tag since 0.4.20 failed the same way:
+[0.4.21](https://github.com/moq-dev/moq/actions/runs/41573749359),
+[0.4.22](https://github.com/moq-dev/moq/actions/runs/41711099214), and
+[0.4.23](https://github.com/moq-dev/moq/actions/runs/42129723974) (also on
+its 2026-11-06 re-run). The `Test Homebrew formula against tarball` step
+(`just gh gst-formula "$VERSION" "$TARGET" dist`, which runs
+`sh/gh/gst-formula.py`) runs `brew test moq-dev/ci-gst/moq-gst`, whose
+`test do` calls `gst-inspect-1.0`. That hangs at startup inside Homebrew's
+test sandbox on a headless Mac, so the step hits Homebrew's 5-minute timeout
+and `Release` is skipped. Those three GitHub releases never published; their
+crates did.
+
+`main` already fixed this in
+[moq-dev/moq#5841](https://github.com/moq-dev/moq/pull/5841): its
+`.github/homebrew/Formula/moq-gst.rb.tmpl` test checks that the plugin exists
+and links `libgstreamer-1.0` instead of loading it, while the workflow still
+loads the plugin into GStreamer outside the sandbox. `release` got the
+formula step in the backport `be7f785b` but kept the pre-#5841 test. The fix
+is a backport of that template change to `release`; the rest of the
+`release`/`main` difference in `moq-gst.yml` (the Nix action and artifact
+pins) is unrelated. The next moq-gst tag then proves it.
+
+Decided 2026-11-06 (maintainer, /quest-unblock): ✅ plan it in m0, and publish
+the next release rather than backfilling 0.4.21 to 0.4.23. Not chosen:
+backfilling each missed version; m3 with the post-cut release work.
+
+Public API: none. Wire: none.
+
+## Related
+
+- [Read-only pull-request CI](/quest/m0/ci/read-only-secrets.md) - its secret cleanup re-ran the tag runs that exposed this