* feat(skill): strengthen maintainer orchestrator review workflow
Add seven enhancements to the deerflow-maintainer-orchestrator skill and
mirror them in docs/agents/maintainer-sop.md:
- Posting gate as confidence x severity, with a maintainer-only notes
channel for sub-threshold observations. Clarifies that "no high-confidence
findings" spans P0/P1/P2, not just P0.
- Batch handling: cluster by relatedness, then synthesize cross-PR overlap,
merge-order/conflict surface, and composition risk.
- Competing PR comparison anchored to the issue's acceptance criteria, with a
maintainer-only ranking and a constructive per-PR public surface.
- Existing comments suppress duplicate posting, not analysis: review fully and
post only the net-new delta, with an idempotency guard for re-runs.
- Green-CI discipline: checks are signal not verdict; read the changed code
path regardless of a green rollup.
- Fork PR head resolution via pull/<n>/head and a pre-post head-SHA recheck.
- Competing-PR detection in artifact resolution; output gains Already
covered / Maintainer notes / Batch synthesis fields.
* docs(skill): rewrite maintainer SOP as design rationale, not a skill restatement
* docs(skill): rename maintainer SOP doc to maintainer-orchestrator-design
* feat(skill): allow controlled fan-out when a related cluster exceeds one context
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Co-authored-by: Willem Jiang <willem.jiang@gmail.com>