Closes weblib-ci#11 in part: the reconciler could add Status/Blocked but
never remove it when every blocker lived in another repo, and, found live
on weblib-archive#30 (2026-09-09), it went further and *reasserted* the
label over a human's hand-removal every 15 minutes.
Established which of the two candidate mechanisms in #11 was real by
instrumenting the script and running it under a real Gitea Actions
token scoped to weblib-archive, against weblib-archive#68 (a throwaway
issue depending on the already-closed weblib/cfbypass#1) and the live
weblib-archive#30: `deps` is never empty for a cross-repo edge (rules out
"Gitea omits the entry"), but every cross-repo entry comes back as Go's
zero-value Issue struct -- id 0, state "", repository null -- rather than
being omitted or erroring. The old `d.get("state") != "closed"` read that
blank state as "still open", which is why the label could never come off,
and why it kept getting silently reapplied.
`is_resolved()` keys on `id == 0` rather than on the empty `state`, since
`id` cannot legitimately be zero for a real issue and a future Gitea could
start populating `state` while still stubbing the rest of the entry.
`reconcile()` now keeps the existing add/remove behaviour whenever every
blocker resolves (same-repo dependencies always do; pinned by
TestSameRepoUnchanged so this cannot regress), but when a blocker cannot
be resolved and none of the resolvable ones are positively open, it
changes nothing and logs the issue number instead of guessing -- keeping
the asymmetry from cfbypass#19 (a false "unblocked" sends someone at work
that cannot be done; a false "blocked" only hides work) rather than
inverting it.
Also probed whether the repo-scoped token could resolve a cross-repo
blocker by querying the other repo directly instead of via
`/dependencies`: `GET repos/weblib/cfbypass/issues/1` and
`GET repos/weblib/cfbypass` both 404 under weblib-archive's own Actions
token, while the same call against its own repo succeeds. So this token
cannot see cfbypass at all; making cross-repo state resolvable would need
a broader-scoped credential, which is a real blast-radius decision left
for bit rather than assumed here. The "unknown -> leave alone, log it"
behaviour in this PR fixes the stuck/reasserted label either way, with or
without that credential ever existing.
12 new tests in test_sync_blocked_label.py, offline against a local
http.server fake. Proved by fault injection: reverting sync_blocked_label.py
to its pre-fix form (keeping the new tests) fails exactly the 5 tests in
TestUnresolvableCrossRepoBlocker -- one of them reproducing the live
reassert bug verbatim (`[(30, 'add', 'blocked by #0, #0')]`) -- while every
other test still passes; restoring the fix (diffed byte-identical against
the pre-revert copy) turns the suite green again.
python3 test_sync_blocked_label.py # 12 tests, OK
python3 test_report_job_log.py # 22 tests, OK (unaffected)
Co-authored-by: bit <bit@das-labor.org>
