Low-severity review nits, no behaviour change to the happy path:
- CloseModals() now also resets the leftover _*ModalIsNew / parent-id fields
(area ClusterId, line AreaId, equipment LineId, tag/vtag) for symmetry —
harmless today (always set before a modal opens) but consistent.
- HandleAddChild / HandleAddVirtualTag / HandleEdit gain a _modalBusy guard
(try/finally) so a rapid double-action can't race two service loads into the
same modal state. The switch bodies are re-indented under the try block.
- VirtualTagModal DataType is now an InputSelect over the standard OPC UA type
list (the same set TagModal uses) instead of free-text InputText.
- RefreshEquipmentChildrenAsync documents that callers own StateHasChanged()
and the full-reload fallback is spelled out as a block with a comment.
Build clean; AdminUI.Tests 216/216.
Joseph Doherty
b87d877270