Review found a bypass: a PR reporting an empty head sha made the runs query lose its head_sha filter (the repo's 50
most recent runs of any commit were classified) and dropped head_commit_id (omitempty), so the merge was unbound.
Both tools now go through evaluateMergeGate, which refuses without a head sha, and pollRuns makes no query without
one. pr_merge also reports merged:false for a PR that is not open or is a draft (Gitea refuses closed ones itself;
the gate no longer depends on that). Tests: unit (gate, counting-server pollRuns with positive control), end to end
for both tools, CI scoped to head_sha, closed/merged/draft. The two caller-wiring mutants are equivalent to the
pollRuns guard and survive by design.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SZkhi49hfeSqBp5aZJNXsM
An intent verb for the trunk-based loop: branch from base → write the file →
open a PR → auto-merge (squash) → delete the branch. One call instead of
orchestrating file_write_branch + pr_create + workflow_run_status + pr_merge +
branch_delete and remembering the conventions each time.
The load-bearing safety is a pure, fail-closed CI gate (evaluateShipGate):
merge=true ONLY when every workflow run for the PR head commit is
completed+success AND the base branch is not review-protected. Every other
state — CI pending / red / absent, review-required base, or an unclean merge —
fails closed to PR-only and returns the PR with a reason. A change with no CI
gate is never auto-merged to trunk (cf. agentsquad#36: non-compiling code
reviewer-approved straight to main with no CI wall).
- ci_timeout_seconds polls the head commit's runs to completion (default 0 =
snapshot, returns pending right after opening the PR).
- Derives a deterministic short-lived branch (tbd/<slug>-<hash>); handles new
and existing files (fetches the blob sha for updates).
- Adds head.sha + mergeable to the PR struct.
- Tests: full gate matrix (green/pending/red/cancelled/none/mixed/protected) +
Call happy-merge, no-CI fail-closed, red fail-closed, allowlist.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>