The side column is a card of its own, narrower by default, its width set by dragging its left edge (kept; double-click resets; the timeline keeps its room). The task list folds from a title-bar button and peeks over the page while pointed at. In the docked materials picker a card's detail opens from its info button, not on hover. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>