- RIGHT_DOCK_MAX_WIDTH 720 to 1280 (all clamps/persist/aria funnel through it); CSS --right-dock-max-width raised to calc(space-2xl * 40), keeping min(100%, ...).
- The dock now threads its live width into the overflow view render props; the Files entry deterministically forces the LEFT|RIGHT two-pane split when the dock width >= 640 (no longer relying on the flaky @container query that left it stacked top/bottom). Narrow dock keeps the stacked single-panel nav; the expand pop-out stays always two-pane.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>