A mount's Status select gains "Check device": instead of a colour frozen at
mount time, it follows the status check already configured on the matching
logical-canvas node (ping, http, ssh…). The rack runs no checker of its own,
so `auto` resolves through the Device Inventory's `node_status`, falls back to
`unknown` when nothing is behind it, and is only offered when the mount — or
the entry being picked — resolves to a node. Losing that link drops the mount
back to `unknown` rather than leaving it on a status nothing can answer.
`useAutoStatusRefresh` polls the inventory every 60s while at least one mount
follows a node, and only then; it writes inventory only, so autosave stays
quiet.
A device created from the rack canvas also lands in the Device Inventory with
a type now. Nothing discovers those rows, so the plate they wear is the only
thing that says what they are — without it they had no icon, no role badge and
no place in the type filter. Passive gear uses the rack-only kinds
`patch_panel` and `pdu`; the latter is deliberately not `socket`, which is
excluded from the rack inventory and would make a PDU vanish on creation.
ha-relevant: maybe
Pouzor
3138cda378