fix(mcp): derive checks requirement from live branch protection (Closes #751) #752
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Reference: Scaled-Tech-Consulting/Gitea-Tools#752
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Closes #751.
Base:
fdab6b6c69717d32a0d50e233413cf09be83f6e8Head:
eac7afe5cbe556b0c83f58ff4bd146b0aaadb3caProcess disclosure — read first
The issue lock for #751 was acquired by operator-authorized late own-branch adoption, after implementation. The implementation commit
eac7afe5cbe556b0c83f58ff4bd146b0aaadb3cawas authored and pushed before any issue lock existed. That ordering was incorrect.The lock was subsequently adopted through the native
gitea_lock_issueown-branch path from a clean recovery worktree detached atfdab6b6c69717d32a0d50e233413cf09be83f6e8, with adoption proofadopted_branch_head = eac7afe5cbe556b0c83f58ff4bd146b0aaadb3ca,competing_branch_check: clear,no_existing_pr_proof: true,no_competing_live_lock_proof: true. Full chronology is recorded in issue #751 comment 12618.No code, commit, or branch content was changed during adoption. The branch reflog contains exactly two entries — creation from
fdab6b6and the single implementation commit — so no amend, rebase, reset, cherry-pick, or force-push occurred.This is a one-time recovery, not a precedent, and does not relax the lock-before-implementation rule.
Problem
gitea_assess_pr_sync_statuscould permanently block a merge-ready pull request whose head commit had no status contexts.Gitea's combined commit-status endpoint reports
state: pendingboth when a check is executing and when the status-context collection is empty. The wrapper took thatstateverbatim, andchecks_requireddefaulted toTruewith no production path ever setting it. "No CI configured" was therefore indistinguishable from "CI is running", and waiting could never resolve it.Root cause (whole dataflow, not one call site)
state; never counted status contexts. Itschecks_status="none"fallback sat in theelifofif state:, unreachable for any truthy state.pr_sync_status.py:76checks_requireddefaulted toTrue.checks_requiredand never passed one, so the core always ran at itsTruedefault._branch_protection_requires_current_baseenable_status_check/status_check_contextsand discarded both.Live-protection derivation
_branch_protection_policyperforms a single live read of the base-branch protection and returns both the current-base rule and the status-check requirement._branch_protection_requires_current_baseis retained as a thin accessor with unchangedbool | Nonesemantics.determinableis False only when the policy genuinely could not be read (missing branch or API failure) — never merely because no rule exists. A successful read finding no protection governing the branch is authoritative evidence that status checks are not required.Empty-context correction
_commit_checks_snapshotreturns the status-context collection alongside the combined state.classify_commit_checksclassifies from that collection:not_requirednonemissing_requiredpendingfailuresuccessunknownThe combined
stateis recorded for observability but is never treated as evidence that CI is executing. An empty collection with combinedpendingclassifies asnoneornot_required, notpending. Aggregation is fail-closed (failure > pending > unrecognized > success), newest-wins per context; contexts outside the required set are ignored when a required-context list is configured.Safety properties
checks_requiredis always derived from live evidence and is deliberately not a caller-supplied input — no new tool parameter was added, so no session can declare checks optional without proof.checks_status, which can no longer mask a real required-check failure; the caller value survives only as a fallback when live status is indeterminable and is echoed inchecks_evidence.caller_supplied_checks_status.merge_now. That fail-open hole is closed; unrecognized vocabulary now blocks.Files changed
pr_sync_status.pyclassify_commit_checks+CHECKS_*classifications; rewritten merge_now checks gate consuming derivedchecks_requiredgitea_mcp_server.py_branch_protection_policy,_matching_protection_rule,_commit_checks_snapshot; derivedchecks_requiredwired into the production path;checks_evidencereportedtests/test_issue_751_checks_assessor.pyTests and results
tests/test_issue_751_checks_assessor.py— 40 passedtests/test_pr_sync_status.py(pre-existing) — 28 passed, unchangedtests/— 3465 passed, 6 skipped, 2 failed, 365 subtestsgit diff --check— cleanThe 2 failures are pre-existing on master, proven by running them on a pristine detached worktree at
fdab6b6c69717d32a0d50e233413cf09be83f6e8with none of this branch applied, where they fail identically:tests/test_issue_702_review_findings_f1_f6.py::TestF1RecoveryBeforeTerminalProbe::test_removed_worktree_recovers_before_probetests/test_reconciler_supersession_close.py::TestReconcilerSupersessionMcpTool::test_tool_posts_comment_and_closes_superseded_pr_issueOverlap with PR #750
Both branches modify
gitea_mcp_server.py, so the file appears in both diffs. They do not overlap textually: PR #750's hunks are at lines ~817-1450 (branches-only / preflight / issue-scope guards); this branch's hunks are at ~15367+ (protection reader and PR-sync assessor).git merge-treeagainst merge-basefdab6b6c69717d32a0d50e233413cf09be83f6e8reports zero conflict markers.PR #750 and PR #746 were not modified, rebased, closed, or superseded by this work.
Safety
repo: Scaled-Tech-Consulting/Gitea-Tools
pr: #752
issue: #751
reviewer_identity: sysadmin
profile: prgs-reviewer
session_id: 67127-5960e2348df8
worktree: /Users/jasonwalker/Development/Gitea-Tools/branches/review-pr-752
phase: claimed
candidate_head:
eac7afe5cbtarget_branch: master
target_branch_sha:
fdab6b6c69last_activity: 2026-07-18T22:39:51Z
expires_at: 2026-07-18T22:49:51Z
blocker: none
repo: Scaled-Tech-Consulting/Gitea-Tools
pr: #752
issue: #751
reviewer_identity: sysadmin
profile: prgs-reviewer
session_id: 67127-5960e2348df8
worktree: /Users/jasonwalker/Development/Gitea-Tools/branches/review-pr-752
phase: validating
candidate_head:
eac7afe5cbtarget_branch: master
target_branch_sha:
fdab6b6c69last_activity: 2026-07-18T22:45:06Z
expires_at: 2026-07-18T22:55:06Z
blocker: none
Canonical PR State
STATE:
approved
WHO_IS_NEXT:
merger
NEXT_ACTION:
Separate dedicated merger session acquires a merger lease and merges PR #752 at the exact approved head. Do not re-review from the merger session.
NEXT_PROMPT:
WHAT_HAPPENED:
Fresh independent gitea-reviewer session (sysadmin / prgs-reviewer) completed preflight, leased PR #752, reviewed the full diff at pinned head
eac7afe5cbagainst issue #751 acceptance criteria, ran focused/affected/full validation, independently proved the two claimed master baseline failures, and is submitting APPROVE.WHY:
The change correctly derives checks_required from live branch protection, classifies commit status from the actual context collection (never treating combined pending with zero contexts as executing CI), wires derived policy into the production assessor, preserves fail-closed behavior for required/incomplete/unknown checks, and does not weaken approval/current-head/current-base/mergeability/lease/role gates. Late adoption for #751 is disclosed in comment 12618 and natively consistent (lock owns correct branch/head; single commit preserved; no recovery mutation).
ISSUE:
#751
HEAD_SHA:
eac7afe5cbREVIEW_STATUS:
approved at exact current head
eac7afe5cbMERGE_READY:
true — APPROVE at HEAD_SHA eac7afe; mergeable; 0 behind; hand off to separate merger bootstrap
BLOCKERS:
none
VALIDATION:
Focused tests/test_issue_751_checks_assessor.py 40 passed. Pre-existing tests/test_pr_sync_status.py 28 passed. Affected suites 446 passed, 64 subtests. Full suite 3465 passed, 6 skipped, 2 failed, 365 subtests. git diff --check clean. py_compile clean. Independent baseline proof: same 2 failures on pristine detached worktree at
fdab6b6without this branch (test_removed_worktree_recovers_before_probe; test_tool_posts_comment_and_closes_superseded_pr_issue) and identical on this head. Self-review: author jcwalker3 != reviewer sysadmin.NATIVE_REVIEW_PROOF:
transport=native_mcp; entrypoint=mcp_server; token_fingerprint=58e2434abee4ba09; review_session=67127-5960e2348df8; remote=prgs; profile=prgs-reviewer; role=reviewer; operator=jasonwalker UID=502
LAST_UPDATED_BY:
sysadmin / prgs-reviewer / independent Grok review session
repo: Scaled-Tech-Consulting/Gitea-Tools
pr: #752
issue: #751
reviewer_identity: sysadmin
profile: prgs-reviewer
session_id: 67127-5960e2348df8
worktree: /Users/jasonwalker/Development/Gitea-Tools/branches/review-pr-752
phase: released
candidate_head:
eac7afe5cbtarget_branch: master
target_branch_sha:
fdab6b6c69last_activity: 2026-07-18T22:46:30Z
expires_at: 2026-07-18T22:56:30Z
blocker: manual-release
repo: Scaled-Tech-Consulting/Gitea-Tools
pr: #752
issue: #751
reviewer_identity: sysadmin
profile: prgs-merger
session_id: 67125-a0efb7f51e06
worktree: /Users/jasonwalker/Development/Gitea-Tools/branches/merge-pr-752
phase: claimed
candidate_head:
eac7afe5cbtarget_branch: master
target_branch_sha:
fdab6b6c69last_activity: 2026-07-18T22:52:33Z
expires_at: 2026-07-18T23:02:33Z
blocker: none
Stale #332 review-decision lock cleanup (#594)
Status: APPLIED
sysadminprgs-merger2026-07-18T22:52:55.784121+00:00approveon PR fix(mcp): derive checks requirement from live branch protection (Closes #751) (#752)closed(merged=True)0425bf9a4325a25b72739fba81604463e3e5e3634prgs-reviewerManual deletion of session-state files is not the workflow.
This path only clears a lock when the referenced PR is merged/closed.
repo: Scaled-Tech-Consulting/Gitea-Tools
pr: #752
issue: #751
reviewer_identity: sysadmin
profile: prgs-merger
session_id: 67125-a0efb7f51e06
worktree: /Users/jasonwalker/Development/Gitea-Tools/branches/merge-pr-752
phase: released
candidate_head:
eac7afe5cbtarget_branch: master
target_branch_sha:
fdab6b6c69last_activity: 2026-07-18T22:58:33Z
expires_at: 2026-07-18T23:08:33Z
blocker: post-merge-moot