Task (U.I): Add check icons to side bar

[Abhishek7Tech]

Closes #2270

added check icons to side bar

Screen recording

Screen.Recording.2026-08-13.193437.mp4

[greptile-apps]

Greptile Summary

This PR adds a responsive selected-state check icon to sidebar filter items.

• Wraps each filter button in a flex container.
• Displays a Lucide check icon for selected items below the large-screen breakpoint.

Confidence Score: 4/5

The filter interaction should be fixed before merging because tapping the newly visible check side of a selected row does not invoke its action.

The new wrapper separates part of the row's visible selection affordance from the button that owns the click handler, creating a dead tap target on mobile and tablet layouts.

Files Needing Attention: src/components/atoms/Filter/Filter.tsx

Important Files Changed

Filename	Overview
src/components/atoms/Filter/Filter.tsx	Adds mobile selected-state checks, but places the check outside the filter button's interactive area.

_{Reviews (1): Last reviewed commit: "disable checkbox for larger screen sizes" | Re-trigger Greptile}

[greptile-apps]

Check sits outside click target

When a mobile or tablet user taps the visible check icon or the space beside it, the outer container receives the interaction while onClick remains attached only to the sibling button, causing that part of the selected filter row to do nothing.