93fc5e0517
Panel now selects from four width tiers based on $COLUMNS (with a 6-col buffer per side before stepping up): 52-wide (default), 70, 74, or 78. Each tier carries richer category descriptions sized to fit the layout. The box is horizontally centered on every draw via a left-padding prefix. Key reader switches from stty min 1 to min 0 / time 3, giving a 0.3 s poll interval so COLUMNS changes are detected without a keypress. The erase formula is now wrap-aware: prev_max_line_width / COLUMNS gives the wrap factor, ensuring old wider panels are fully cleared after narrowing. Idle timeout ticks that detect no resize are skipped entirely.