- Cubby without a bottom board: the lowest cell opens onto the floor, but its
column divider still started at the (missing) bottom board's top, leaving it
floating ~thickness above the floor. Anchor it at y=0 when there's no bottom.
- Bookshelf full-height divider: it crosses the continuous shelves, so it can't
share their depth plane (proud at the front, coplanar with the back panel —
z-fighting down the centre back). Recess its depth to sit fully INSIDE the
boards' depth: embedded at each shelf crossing (board occludes it) and tucked
inside the back panel.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
