modify pr template

Author: jonhealy1

.github/PULL_REQUEST_TEMPLATE.md

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+## Technical Context
+- **Related Issues:** Fixes # (issue number)
+- **Breaking Changes:** [Yes/No] (If yes, please describe the impact and migration path)
+
+## Description
+> Provide a brief summary of the changes, the rationale behind them, and any specific areas you'd like the reviewers to focus on.
+
+---
+
+## Checklist
+- [ ] **Linting:** Code is formatted and linted.
+- [ ] **Tests:** Tests pass. I have included new tests for these changes where applicable.
+- [ ] **Edge Cases:** I have manually verified "unhappy paths" and edge cases beyond the basic success criteria (e.g., database connection timeouts, malformed input, strict mapping rejections).
+- [ ] **Documentation:** I have updated `README.md` to reflect any new environment variables, configuration changes, or breaking updates.
+- [ ] **Accountability:** I can explain the implementation logic for every line of code submitted and take full responsibility for its maintenance.
+
+---
+
+## AI Policy Compliance
+- [ ] I confirm this PR meets the following standards:
+
+> **Policy:** We require a "human-in-the-loop." You are the author and are fully accountable for all submitted code. Please ensure all tool-generated content is thoroughly reviewed before submission to ensure it is not an "extractive contribution" that squanders maintainer time.
+
+For more information, see our [AI contribution policy](https://stac-utils.github.io/ai-contribution-policy).