feat(driver-calc): B2-WP7 Calculation driver — IDependencyConsumer + triggers + deploy cycle gate

Adds the Calculation pseudo-driver (tags computed by C# scripts over other tags' live
values) plus the host seam that feeds it:

- IDependencyConsumer capability interface (Core.Abstractions) + DriverTypeNames.Calculation.
- CalculationDriver : IDriver, ISubscribable, IReadable, IDependencyConsumer — change-gate +
  dedupe (VirtualTagActor parity), timer-group scheduler, Bad-transition + script-log emission,
  Good recovery; reuses the T0-4 CalculationEvaluator.
- DriverHostActor spawns a DependencyConsumerMuxAdapter per dependency-consuming driver,
  registering its refs on the per-node DependencyMuxActor and forwarding DependencyValueChanged
  → OnDependencyValue; re-registers on every apply, torn down with the driver.
- Factory + probe registered in DriverFactoryBootstrap (keeps the T0-3 guard green); guard test
  csproj references the driver so the bin-scan discovers the factory.
- DeploymentArtifact injects the resolved scriptSource (scriptId → SourceCode) into a calc tag's
  delivered TagConfig so the host-blind driver can compile it.
- DraftValidator deploy gates: CalculationScriptMissing / CalculationScriptNotFound (scriptId
  existence) + CalculationDependencyCycle (DependencyGraph.DetectCycles over calc→calc edges).
- Tests: driver units (dep-ref extraction, change-gate, dedupe, Bad+script-log+recovery, timer,
  read), tag-config parsing, DraftValidator gates (self/2-cycle/cross-driver-terminal), and a
  Runtime integration test proving values FLOW mux → adapter → driver → calc-of-calc end-to-end.

Claude-Session: https://claude.ai/code/session_01LVneM3eh1UtJxEisFXgmox

src/Core/ZB.MOM.WW.OtOpcUa.Configuration/Validation/DraftSnapshotFactory.cs

@@ -50,6 +50,7 @@ public static class DraftSnapshotFactory
             UnsTagReferences   = await db.UnsTagReferences.AsNoTracking().ToListAsync(ct),
             VirtualTags        = await db.VirtualTags.AsNoTracking().ToListAsync(ct),
             ScriptedAlarms     = await db.ScriptedAlarms.AsNoTracking().ToListAsync(ct),
+            Scripts            = await db.Scripts.AsNoTracking().ToListAsync(ct),
             PollGroups         = await db.PollGroups.AsNoTracking().ToListAsync(ct),
             PriorEquipment     = [],   // intentional: no prior-generation table to diff against at this level
             ActiveReservations = await db.ExternalIdReservations