Items are mounted from the front, the rear, or full depth. On a 4-post
rack a front and a rear item can share a unit; a full-depth one takes
both sides, and the rear view shows its back. Overlaps are checked per
side. Shelf contents take the shelf's side. A Front / Rear switch flips
the drawing.
Racks are saved in Gandalf (new cutsheet_racks table) and edited on the
rack page by admins: name, height, notes, add and delete. Renaming moves
the rack's items; saving the first rack carries over the items of the
config default it replaces. Config racks remain the fallback.
Faceplates are stretched to the full width only when the drawing is
close to the slot's proportions, so the PDU is not squashed.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>