init

.github/pull_request_template.md

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+## Summary
+
+- describe the change
+- explain any skill behavior or rule updates
+
+## Test / validation
+
+- [ ] reviewed `SKILL.md`
+- [ ] reviewed affected files under `references/`
+- [ ] considered impact on topology, env handling, and finalize flow
+
+## Notes
+
+Add any migration edge cases or trade-offs here.