Write a pull request description for this change set.

Context:
- This may be a single commit, a commit range, or a branch comparison.
- The result should be ready to paste into GitHub or GitLab.
- Be accurate and concise. Do not invent testing or screenshots that are not evidenced by the diff.

Commit Message:
{{commit_message}}

Files Changed:
{{files_changed}}

Stats:
{{stats}}

Change Hints:
{{change_hints}}

Diff:
{{diff}}

Return:

## Summary
- Short bullets describing the main changes

## Why
- Why this PR exists

## Testing
- Mention visible testing evidence from the diff if any
- If no testing evidence is visible, say "Not specified in diff"

## Risks
- Briefly describe rollout, compatibility, or review risks

## Screenshots
- If the diff suggests UI work, include "Screenshots: Needed"
- Otherwise include "Screenshots: Not needed"
