chore: pre-AI Agent gitea workflow changes

.gitea/PULL_REQUEST_TEMPLATE.md

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+## Summary
+- What does this PR change?
+
+## Linked issues
+- Fixes #
+- Relates to #
+
+## Type
+- [ ] Feature
+- [ ] Bug fix
+- [ ] Chore / refactor
+- [ ] Docs
+
+## Test plan
+- [ ] Unit tests
+- [ ] Integration tests
+- [ ] Manual verification
+
+**Commands / steps:**
+1.
+2.
+
+## Screenshots / UI notes (if applicable)
+
+## Checklist
+- [ ] Acceptance criteria met (from linked issue)
+- [ ] No secrets committed
+- [ ] Logging is appropriate (no PII)
+- [ ] Docs updated (if needed)