Pre-existing stale test surfaced by Batch 4's full gate (Batch 2/3 gates were
live-/run and never ran Host.IntegrationTests): Batch 2 registered CalculationProbe
in DriverFactoryBootstrap (9 probes) but AddOtOpcUaDriverProbes_is_idempotent's
AdminUiDriverTypeKeys still listed 8, so distinctTypes(9) != Length(8). Calculation
is a real DriverTypeNames.Calculation pseudo-driver with a probe; add it and refresh
the now-stale *DriverPage.razor comment (that routed flow retired in Batch 2). Not a
Batch-4 code change — a test-correctness fix.
Claude-Session: https://claude.ai/code/session_01LVneM3eh1UtJxEisFXgmox
Joseph Doherty
1badc10445