Post-Merge Scan Skill

Output per merge

### PR #N — title (merged DATE)
- Follow-ups found: (list with file:line)
- Risk: low | medium | high
- Effort: small | medium | large
- Suggested loop action: minimal-fix | ticket | escalate-human | skip

What to look for

• TODO / FIXME introduced in merge
• Deprecated APIs still referenced
• Broken internal doc links
• Stale feature flags marked for removal
• Unused imports or dead code clusters (small only)