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The fork-PR e2e lane never ran. `resolve` looked the PR up with
`listPullRequestsAssociatedWithCommit` against the base repo, and that
endpoint returns nothing for a fork PR head: the commit reaches
cozystack/cozystack only as `refs/pull/<n>/head`, and the association
index does not walk `refs/pull/*`. So every fork PR fail-closed on
"expected exactly one open PR for <sha>, found 0", stamped a red
required "E2E Tests" its author could not clear by pushing, and skipped
publish/e2e/report.
It resolves same-repo heads correctly, which is why the hole stayed
invisible — same-repo PRs get "E2E Tests" from pull-requests.yaml and
never enter this workflow. Of 935 runs, 930 skipped as designed and all
5 that reached `resolve` stopped there; three on `found 0`, and one of
those reds was later overwritten by a mirrored same-repo run, which hid
it again.
Enumerate the base repo's open pull requests instead and match on the
head SHA. Same trust properties as the call it replaces — plain
base-repo API data the fork cannot forge — and `state: 'open'` at the
source keeps the rule that a closed or merged PR never counts. The
exactly-one guard and the head_sha match are unchanged, so a stacked
lower PR still passes and two PRs genuinely at the same head still fail
closed. Pagination stops being a corner case and becomes load-bearing:
the repo has 180 open PRs, and the fork PR that surfaced this sits on
page two.
Verified against the live API for the failing case: PR #1982 at
984936f9 now resolves to exactly one match, with labels present so the
full-e2e override still reads. actionlint, zizmor and `node --check`
on the extracted script all pass.
Assisted-By: Claude <noreply@anthropic.com>
Signed-off-by: Myasnikov Daniil <myasnikovdaniil2001@gmail.com>