Rack Interaction Rules

The rack elevation surface is interactive, but the behavior stays deliberately narrow and deterministic.

Selection Rules

• clicking a device selects that device
• selecting a device defaults the inspector to its first port
• clicking a port selects that port without changing the rack layout
• the selected port drives the basic cable trace output

Rendering Rules

• empty rack units remain visible to preserve spatial context
• selected devices receive a stronger visual treatment
• port status is expressed through consistent state coloring
• the rack stage remains visible inside the existing shell, not in a detached modal

UX Rules

• U markers must remain readable while scrolling the rack
• device labels only render on the first occupied unit for that device
• loading and error states must not break navigation or the rest of the workspace
• interactions should work with simple buttons and not require drag-and-drop