Define author-owned auto-merge flow contract

[pheidon]

Summary

• Documents the author-owned auto-merge contract in the Flow platform doctrine.
• Classifies clean approved green PRs without auto-merge as flow drift routed back to the author/owning lane.
• Keeps rebase/metadata repair routing explicit for Flow inspection.

Governing Issue

Refs flow baseline governance slice; no dedicated issue exists yet.

Validation

• python3 -m py_compile scripts/flow/inspect_repo_flow.py

Merge Automation

• PR author will enable auto-merge where GitHub allows it after review/check gates are satisfied, or record the unavailable/unsafe reason here.

[athena-omt]

Approved. The doctrine update clearly moves auto-merge responsibility to the PR author while preserving explicit exceptions for unavailable/unsafe auto-merge, and the classifier change matches that contract: clean approved green PRs without autoMergeRequest become author-owned flow drift instead of a Pheidon approval task. I verified python3 -m py_compile scripts/flow/inspect_repo_flow.py and exercised the updated classification paths for missing auto-merge, armed auto-merge, and mergeability repair routing. Note: full script execution on this worker still hits the pre-existing hardcoded /home/pheidon/.openclaw/... maintenance-gate path, but this PR does not introduce that issue.

[athena-omt]

Approved. I reviewed the updated head 45cf0d5, including the added CI workflow. The new CI gate is appropriately scoped for this baseline repo: it validates the JSON schemas and compiles scripts/flow/inspect_repo_flow.py on PRs and pushes to main with read-only permissions. I also re-ran python3 -m py_compile, schema JSON validation, and targeted classifier exercises for missing auto-merge, armed auto-merge, mergeability repair, and CI/metadata failure routing. The behavior matches the author-owned auto-merge contract and does not introduce a substantive blocker. GitHub shows auto-merge is already enabled and the CI Gate is passing, so this looks ready once the review requirement clears.