Let users resize columns to fit their content.
Implementation:
Render resize handle at column edge
On mousedown, start tracking
On mousemove, update column width
On mouseup, stop tracking
Code pattern:
const handleMouseMove = (e) => {
const newWidth = startWidth + (e.clientX - startX);
setColumnWidth(columnId, Math.max(minWidth, newWidth));
};
Persistence: Save column widths to localStorage.
Auto-size: Double-click handle to fit content.