The rack front is drawn from the rack units on cutsheet items. Switches
with a faceplate use it, with live port state; patch panels get a generic
panel with port labels; everything else is a labelled plate. Each
documented port shows its cutsheet state, and hovering a port lights up
every port on the same cable run (through patch panels) and names the
cables. Clicking opens the switch port or the cable.
Overlapping items and items past the top of the rack are listed instead
of drawn over another; where two claim the same top unit, the first one
recorded wins. rack.units sets the height (default 42).
/api/rack builds on the cutsheet view; cutsheet.rack_layout and
cutsheet.port_marks hold the placement and per-port logic.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
