The coordinator was special-cased in both mesh imports to auto-create a
canvas Node, so it never appeared in the pending inventory and users could
not approve/hide/type it like every other device.
Remove the auto-placement: the coordinator now flows through the shared
pending path (upsert into pending_devices with suggested_type
zigbee_coordinator / zwave_coordinator). An already-approved coordinator
Node still gets its properties refreshed on re-import via the shared
approved-node path. The response's coordinator/coordinator_already_existed
fields are retained (now always unset) for backward-compatible shape; the
frontend already ignored them.
Tests updated: coordinator lands in pending (counts include it), no Node
auto-created, pending metadata carried, approved coordinator refresh + no
pending re-list.
ha-relevant: yes
Pouzor
3f6e9b00f7