- Add 10-point high-quality PR formula based on real-world success cases
- Add investigation phase workflow (post to issue before PR)
- Add git history tracing techniques (git log, git blame)
- Add evidence-loop pattern (reproduce → trace → link → post)
- Add high-quality PR case study reference
- Update PR checklist with investigation steps
- Emphasize separation of concerns (detailed analysis in issue, fix summary in PR)
Key principles:
- Deep investigation before coding
- Minimal, surgical fixes
- Professional communication
- No internal/irrelevant details in PR
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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