Adds the canonical cross-role handoff schema and its fail-closed validator,
live-state recovery, role-limited continuation, mandatory durable posting,
the merged-awaiting-controller boundary, controller accept/reject
continuation, and workflow-failure escalation with duplicate handling.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Consolidate all four canonical workflow files and router SKILL.md:
- review-merge-pr.md (from #334 canonical prompt)
- reconcile-landed-pr.md (reconciliation gates + handoff schema)
- create-issue.md (canonical issue-creation prompt)
- work-issue.md (canonical author/coder prompt)
SKILL.md is now a short router with mode isolation and universal rules.
Adds final-report schemas for all modes and 13 doc-contract tests.
Supersedes partial split work in PR #335; full #333 acceptance in one PR.