chore: add pull request template

Author: jiten-singh-shahi

.github/pull_request_template.md

@@ -0,0 +1,16 @@
+## Summary
+<!-- What does this PR do? 1-3 bullet points -->
+
+## Type of Change
+- [ ] feat: New feature
+- [ ] fix: Bug fix
+- [ ] docs: Documentation only
+- [ ] chore: Maintenance / tooling
+- [ ] refactor: Code change that neither fixes a bug nor adds a feature
+
+## Checklist
+- [ ] `npm test` passes (build + validators + tests)
+- [ ] `npm run lint` passes
+- [ ] No hardcoded paths (`validate-no-personal-paths`)
+- [ ] Cursor adapters rebuilt (`npm run build`)
+- [ ] CHANGELOG.md updated (if user-facing change)