Request contributors to tick if AI-gen code has been reviewed (#8922)

Author: Light2Dark

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,22 +1,21 @@
 ## 📝 Summary
 
 <!--
-Provide a concise summary of what this pull request is addressing.
-
 If this PR closes any issues, list them here by number (e.g., Closes #123).
+
+Detail the specific changes made in this pull request. Explain the problem addressed and how it was resolved. If applicable, provide before and after comparisons, screenshots, or any relevant details to help reviewers understand the changes easily.
 -->
 Closes #
 
-## 🔍 Description of Changes
+## 📋 Pre-Review Checklist
+<!-- These checks need to be completed before a PR is reviewed -->
 
-<!--
-Detail the specific changes made in this pull request. Explain the problem addressed and how it was resolved. If applicable, provide before and after comparisons, screenshots, or any relevant details to help reviewers understand the changes easily.
--->
+- [ ] For large changes, or changes that affect the public API: this change was discussed or approved through an issue, on [Discord](https://marimo.io/discord?ref=pr), or the community [discussions](https://github.com/marimo-team/marimo/discussions) (Please provide a link if applicable).
+- [ ] Any AI generated code has been reviewed line-by-line by the human PR author, who stands by it.
+- [ ] Video or media evidence is provided for any visual changes (optional). <!-- PR is more likely to be merged if evidence is provided for changes made -->
 
-## 📋 Checklist
+## ✅ Merge Checklist
 
 - [ ] I have read the [contributor guidelines](https://github.com/marimo-team/marimo/blob/main/CONTRIBUTING.md).
-- [ ] For large changes, or changes that affect the public API: this change was discussed or approved through an issue, on [Discord](https://marimo.io/discord?ref=pr), or the community [discussions](https://github.com/marimo-team/marimo/discussions) (Please provide a link if applicable).
-- [ ] Tests have been added for the changes made.
 - [ ] Documentation has been updated where applicable, including docstrings for API changes.
-- [ ] Pull request title is a good summary of the changes - it will be used in the [release notes](https://github.com/marimo-team/marimo/releases).
+- [ ] Tests have been added for the changes made.