#66373 swapped GITHUB_TOKEN -> AUTOFIX_BOT_PAT across the workflows. That
PAT is empty on fork PRs (forks get no repo secrets), which broke every
fork PR two ways:
1. detect-changes classified with the empty PAT -> the compare API failed
all 3 retries -> the classifier failed open and force-enabled the
ci_review lane on EVERY fork PR.
2. The ci-reviewed / mcp-catalog-reviewed label gates then read labels with
the same empty PAT via a hard-failing retry step -> the job failed with
no recovery a fork contributor could perform (they can't self-add the
label; re-running can't fix it).
Restores the pre-#66373 fork-safe behavior without reverting the commit's
real improvements (job timeouts, per-file flake retry, network-install
retries):
- detect-changes + ci.yml: token falls back to the built-in read-only
github.token when AUTOFIX_BOT_PAT is empty. On main it uses the PAT
(authoritative); on forks it uses github.token, which can read the
public compare endpoint. (An input `default:` only applies on omission,
not on an empty passed value — hence the explicit `|| github.token`.)
- lint ci-review + supply-chain mcp-catalog gates: restore the inline
`gh pr view ... || true` label read with the github.token fallback,
dropping the hard-failing retry "Fetch PR labels" step. Graceful
degrade to "label absent" on an API blip, same as before #66373.
Same-repo enforcement is unchanged (byte-identical logic; the PAT is still
used there). Fork PRs classify correctly and the gates read labels via the
read-only token exactly as they did before the regression.
1e01a4bbe7