Update PR template to match OpenHands/OpenHands repository

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,11 +1,49 @@
+<!-- Keep this PR as draft until it is ready for review. -->
+
+<!-- AI/LLM agents: 
+
+Provide evidence that the code runs properly end-to-end. Just running unit tests is NOT sufficient. Explain exactly the command that you ran, and provide evidence that the code works as expected, either in the form of log outputs or screenshots. In addition, if it is a bug fix, also run the same code before the bug fix and demonstrate that the code did NOT work before the fix to demonstrate that you were able to reproduce the problem.
+-->
+
+- [ ] A human has tested these changes.
+
+---
+
+## Why
+
+<!-- Describe problem, motivation, etc.-->
+
 ## Summary
 
-[fill in a summary of this PR]
+<!-- 1-3 bullets describing what changed. -->
+-
+
+## Issue Number
+<!-- Required if there is a relevant issue to this PR. -->
+
+## How to Test
+
+<!--
+Required. Share the steps for the reviewer to be able to test your PR. e.g. You can test by running `npm install` then `npm build dev`.
+
+If you could not test this, say why.
+-->
+
+## Video/Screenshots
+
+<!--
+Provide a video or screenshots of testing your PR. e.g. you added a new feature to the gui, show us the video of you testing it successfully.
+
+-->
+
+## Type
+
+- [ ] Bug fix
+- [ ] Feature
+- [ ] Refactor
+- [ ] Breaking change
+- [ ] Docs / chore
 
-## Checklist
+## Notes
 
-- [ ] If the PR is changing/adding functionality, are there tests to reflect this?
-- [ ] If there is an example, have you run the example to make sure that it works?
-- [ ] If there are instructions on how to run the code, have you followed the instructions and made sure that it works?
-- [ ] If the feature is significant enough to require documentation, is there a PR open on the OpenHands/docs repository with the same branch name?
-- [ ] Is the github CI passing?
+<!-- Optional: config changes, rollout concerns, follow-ups, or anything reviewers should know. -->