The pr_already_merged guard was defined + unit-tested but consulted by zero
production code, while ADR-001 Р-3 / README / CHANGELOG claimed the merge path
consults it before a repeat merge (reviewer P1, ORCH-065 attempt 2/3). The
actual merge actor is the LLM deployer agent (it merges the feature PR at the
start of the `deploy` stage), so on a reaper re-drive of an already-merged PR
the deployer would blindly re-merge → Gitea error → false БАГ-8 rollback; AC-11
("no second merge") was not met deterministically.
Wire the guard at the real consultation point — the deployer prompt — so it
runs merge_gate.pr_already_merged before any (re-)merge and no-ops when the PR
is already merged. check_branch_mergeable is left untouched (AC-13: check_*
behaviour unchanged; it runs on the first deploy-staging→deploy edge, not on a
deploy-stage re-drive where the second-merge risk lives).
- .openclaw/agents/deployer.md: idempotent pre-merge guard step + general rule.
- src/merge_gate.py: docstring names the deployer-prompt consultation point.
- docs/architecture/README.md, CHANGELOG.md: state the consultation point so
golden-source matches implementation.
- tests/test_merge_gate.py: regression test asserting the deployer prompt wires
the guard (so it can't silently become dead code again).
pytest tests/ -q: 743 passed.
Refs: ORCH-065
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
claude-bot
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