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8ccfdab180 |
fix(ci): let an administrator merge their own green PR
`required_approvals: 1` on `main` was a lock-out, not a protection. Gitea
refuses to let a PR's author approve their own PR, and `jakman85` is the only
collaborator — so no account in existence could approve a PR the operator
opened, including the PR that would fix that. Measured 2026-10-01 on PR #35:
gate green in 1m41s, reviews `[]`, `required_approvals: 1`, unmergeable.
It was never the documented design either: `ci/approval-policy.sh`'s header and
`ci/gate.sh:194` both already describe the model as "required_approvals drops
to 0 and the GATE decides", and `require-gate.sh`'s own closing note named this
failure and prescribed this remedy. 2026-09-30's entry flagged the 1-vs-0
disagreement as unresolved; this settles it at 0.
Layer 1 — branch protection. required_approvals 1 -> 0 in the declaration, plus
infra/gitea/allow-admin-self-merge.sh to apply it live (target read FROM the
declaration, so the script cannot drift from what the gate checks).
require-gate.sh moves to 0 too; left at 1 it would re-impose the lock-out on its
next run. The narrow choice is deliberate: the other way to unblock an owner is
block_admin_merge_override: false, which would re-open what
block-admin-override.sh was written to close (PRs #5-#9, zero approvals). This
drops the approval COUNT only — block_admin_merge_override and
enable_status_check stay true and are asserted after the PATCH, so a red gate
stays unmergeable by everyone, administrators included.
Layer 2 — ci/approval-policy.sh. Sensitive paths still need a non-author
approval the sole admin cannot get, so an administrator may waive it with an
`/approve-override <reason>` comment: directive must start a line, reason
mandatory, permission re-checked LIVE, invalidated by a new commit, and the
overrider + reason printed in the gate log and job summary. Candidate selection
is the pure, offline ci/approval-override.py (23 unit assertions, all passing);
authorisation stays in the fail-closed stage. Every new failure mode blocks.
The cost, stated not buried: for an administrator, "a change to the gate cannot
be gated by the gate" is now advisory rather than structural. Unavoidable with
one human; what is bought back is an attributed, commit-scoped record instead of
a silent bypass. And the uncomfortable part, accepted as an operator decision:
authorisation is by live permission alone, and the AGENT account `gitea-admin`
also holds `owner` — so an agent can clear its own PR this way. Documented in
approval-policy.json, the stage header, and CLAUDE.md (which tells agents not
to). Narrowing needs no code change: add `override_admins` and the stage already
requires membership.
Adjacent fix, in scope because `make -C ci test` is the only runner for the
suite added here: ci/tests/gate-decision.test.sh hand-maintained a stub list
that "must name EVERY stage gate.sh runs" and omitted `approval-policy` (added
to gate.sh by PR #17), so run_stage hit exit 127 and 15 of 50 assertions failed.
Verified pre-existing on pristine origin/main @
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e6f6e4febb |
feat(ci): detect Gitea settings drift -- the blind spot that hid a month of outage
Every check in this repo reads the repository, the rendered manifests, or the cluster.
NONE could see Gitea's own database, and that is where branch protection and runner
registration live. Three failures came out of that blind spot on 2026-09-29, all the same
shape -- a setting that READ as enforced while not being, with nothing able to notice:
* main had NO branch protection for ~a month while DECISIONS-LOG recorded it as a
required status check;
* ZERO Actions runners were registered, so PR #1 -- the first PR this repo ever had --
sat pending for 30.6 minutes with nothing to execute it;
* after enable_status_check and required_approvals were turned on they STILL did not
bite, because block_admin_merge_override was false: PRs #5-#9 merged with zero
approvals recorded against required_approvals: 1.
infra/gitea/*.sh ASSERT the desired state. Nothing DETECTED drift from it. This is the
detector.
ci/gitea-settings.sh runs as a merge-gate stage: it diffs the live rule at
/branch_protections/main against infra/gitea/expected-branch-protection.json and asserts at
least one runner is online. It reads the RULE object, not /branches/main -- the branch view
does not expose block_admin_merge_override and showed all-green while the rule was
overridable by the only account that merges.
Verified by test, not assumed:
no token -> exit 3, skips loudly, does NOT block
live == declaration -> exit 0
injected drift -> exit 1, blocks, naming both the drifted key and the runner count
The skip is DELIBERATELY not in gate.sh's strict-skips loop. Making an absent credential
block every PR is precisely the lock-yourself-out failure this repo keeps walking into, so
a skip denies a PASS (exit 3) and says loudly what is unverified. REQUIRE_GITEA_SETTINGS=true
upgrades it to a block once the token is wired.
gate.yml's `|| [ "$?" -eq 3 ]` tolerance now covers a second stage. That widening is
declared in the file rather than left to be discovered, and it narrows back the moment
REQUIRE_GITEA_SETTINGS is set.
infra/gitea/set-ci-token.sh mints the token and stores it as the repo Actions secret without
ever printing the value.
UNTIL THAT TOKEN EXISTS THIS STAGE SKIPS, AND A SKIPPED DETECTOR DETECTS NOTHING.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
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