[GOOD FIRST ISSUE] Add date range filter (7d / 30d / 90d) to PR Analytics widget

[vbarik317-droid]

Summary
The commit chart has a time range selector (7d / 30d / 90d) but the PR Analytics widget always shows all-time data. This task adds the same filter to PR Analytics for consistency.

What needs to be done

• Reuse the existing range selector component from the commit chart
• Pass selected range as a query param: /api/metrics/prs?range=30d
• All PR stat tiles (merge rate, review time, counts) should update on range change
• Default range: 30d

Files to touch

• PR Analytics widget component inside src/components/
• src/app/api/metrics/prs/ (extend to accept range query param if not already)

Hints

• Find the range selector already used in the commit chart and reuse it
• Use useEffect with range as a dependency to re-fetch on change
• Check if the API already supports date filtering before adding new logic

Good for
Someone familiar with React state and API query params looking to contribute a UI feature.

[Srishti-Gupta74]

Hi @Priyanshu-byte-coder!
I'd like to work on this issue under GSSoC '26.
My approach would be to reuse the existing date range selector from the commit chart, add range state to the PR Analytics widget, pass the selected range as a query parameter to the metrics API, and ensure the widget data refreshes whenever the range changes.
Kindly assign this issue to me. Thanks!

[github-actions]

Assigned to @Srishti-Gupta74! You have 7 days to open a PR. No PR after 7 days = auto-unassigned so others can pick it up. Good luck!