Two things about when a faceplate draws its sockets.
A mount now carries `portVisibility`: `auto` leaves the faceplate in charge —
switches and patch panels permanently, everything else on focus — while
`always` and `hover` override that either way. The selector sits in the port
section of the device modal. It is a canvas display choice, so it lives on the
rack mount and never reaches the inventory row the mount points at; `auto` is
the default, so nothing about existing racks changes.
The fix underneath: with the cabling overlay on `hover`, hovering a switch drew
its runs, but the far end landed on a plate that was not itself focused and so
drew no socket — a cable stopping on blank metal. A port a *drawn* cable ends
on is now always rendered, on both plates, whatever the plate rule or the mode
says. `cableVisibility.ts` owns the question of which cables are on screen and
`CableLayer` draws from the same answer, so the two can no longer disagree.
Fixes#403
ha-relevant: yes
Pouzor
4ccad61e73