The rack canvas loses its right rail: a mount is now edited in its own dialog,
like a network node, and the canvas keeps the full width.
Devices:
- `RackDeviceModal` adds and edits a mount — label, faceplate, U position,
height, column, width, status, colour, ports, unmount. Adding offers three
sources: an existing Device Inventory entry, a new device created here, or a
rack-only accessory. Opened by `+ Device` in the left rail or a double-click
on a plate.
- `RackSettingsModal` takes over rack chrome (name, location, capacity, 19"/10",
numbering, colours, delete), on a double-click of the chassis.
- The left rail's `+ Rack` becomes `+ Device`; `+ Rack` stays in the header.
Inventory:
- Gear created from a rack canvas lands in the Device Inventory with
`discovery_source: "rack"`, so it inherits the existing search, filters, hide
and delete instead of a parallel list in the sidebar. New "Rack devices"
source filter and badge.
- It is never placed on a logical canvas: approve returns 409, bulk-approve
skips it with `match: "rack"`, and the UI drops the Approve button and reports
the skip.
- `InventoryTray` becomes `AccessoryTray` — blanks, shelves and cable managers
only, still a drag source.
Fixes:
- A taller faceplate (or a hand-typed height) no longer silently keeps the old
geometry when it collides: the device relocates to the nearest slot that takes
the new size, and only a rack with no such slot refuses the edit. This is why
a 1U and a 2U plate rendered at the same height and the field looked locked.
- The empty-state buttons sat under `.react-flow__renderer` (z-index 4), so the
pane swallowed their clicks as a canvas drag.
Tests: rack device/settings modals, empty-state stacking, relocate-vs-refuse in
the store, rack source bucketing, inventory approve gating (frontend + backend).
ha-relevant: maybe
The modal-based editors and the rack store are portable; the inventory tagging
rides on the standalone FastAPI scan routes. Discuss before porting.