Converts the single-column stacked filters popover into a 2-column grid
layout. Status filters appear in the left column, Priority + Assignee in
the right column. On mobile (<640px), falls back to single column.
Popover width increased from 320px to 480px with viewport-aware max to
prevent overflow.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Reduce filter/sort/group button text to text-xs
- Shrink icons from h-3.5/w-3.5 to h-3/w-3
- Tighten icon-to-text spacing from mr-1.5 to mr-1
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>