Three unrelated fixes from the review of this branch.
`create_pending` merging into a hidden row left it hidden, so adding a device
by hand whose IP collides with one hidden weeks ago answered 201 while nothing
appeared in the inventory — the add read as a no-op. An explicit add outranks
the earlier hide, exactly like restore. Only `hidden` is lifted; an approved
row is not walked back down the lifecycle.
Standalone stored a node's live reachability in the inventory row's `status`,
which is the pending/approved/hidden lifecycle — the backend keeps the two
apart as `status` vs `status_live`. Reachability now goes to `status_live`, and
`normalizeLifecycle` repairs rows already written the old way: the node still
reads its status on load, and the next save rewrites the row correctly.
Status checks stay device-scoped and keep covering a device no canvas draws.
That is deliberate — the inventory row is what's monitored, so a rack mount or
an inventory-only entry reports state without being drawn anywhere, and
deleting a node no longer silently stops monitoring the host. `hide`, or
clearing the check method, is what ends the checks. Documented and pinned with
tests rather than changed.
ha-relevant: maybe