feat(opcua): diff Equipment VirtualTags in Phase7Plan + rebuild trigger

src/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer/Phase7Plan.cs

@@ -40,19 +40,36 @@ public sealed record Phase7Plan(
     /// <inheritdoc cref="AddedEquipmentTags"/>
     public IReadOnlyList<EquipmentTagDelta> ChangedEquipmentTags { get; init; } = Array.Empty<EquipmentTagDelta>();
 
+    /// <summary>
+    ///     Equipment-namespace VirtualTag diff sets, keyed by <see cref="EquipmentVirtualTagPlan.VirtualTagId"/>.
+    ///     The value-side analogue of <see cref="AddedEquipmentTags"/>: a VirtualTag carries an
+    ///     <c>Expression</c> evaluated over <c>DependencyRefs</c>, so a deploy that changes ONLY
+    ///     VirtualTags (e.g. a new computed signal or an edited formula) must still produce a
+    ///     non-empty plan and drive a rebuild — without these the diff was blind to VirtualTags and
+    ///     such a deploy silently no-op'd. Added as init-only members (defaulting empty) for the same
+    ///     compile-compatibility reason as <see cref="AddedEquipmentTags"/>.
+    /// </summary>
+    public IReadOnlyList<EquipmentVirtualTagPlan> AddedEquipmentVirtualTags { get; init; } = Array.Empty<EquipmentVirtualTagPlan>();
+    /// <inheritdoc cref="AddedEquipmentVirtualTags"/>
+    public IReadOnlyList<EquipmentVirtualTagPlan> RemovedEquipmentVirtualTags { get; init; } = Array.Empty<EquipmentVirtualTagPlan>();
+    /// <inheritdoc cref="AddedEquipmentVirtualTags"/>
+    public IReadOnlyList<EquipmentVirtualTagDelta> ChangedEquipmentVirtualTags { get; init; } = Array.Empty<EquipmentVirtualTagDelta>();
+
     /// <summary>Gets a value indicating whether the composition plan contains no changes.</summary>
     public bool IsEmpty =>
         AddedEquipment.Count == 0 && RemovedEquipment.Count == 0 && ChangedEquipment.Count == 0 &&
         AddedDrivers.Count == 0 && RemovedDrivers.Count == 0 && ChangedDrivers.Count == 0 &&
         AddedAlarms.Count == 0 && RemovedAlarms.Count == 0 && ChangedAlarms.Count == 0 &&
         AddedGalaxyTags.Count == 0 && RemovedGalaxyTags.Count == 0 && ChangedGalaxyTags.Count == 0 &&
-        AddedEquipmentTags.Count == 0 && RemovedEquipmentTags.Count == 0 && ChangedEquipmentTags.Count == 0;
+        AddedEquipmentTags.Count == 0 && RemovedEquipmentTags.Count == 0 && ChangedEquipmentTags.Count == 0 &&
+        AddedEquipmentVirtualTags.Count == 0 && RemovedEquipmentVirtualTags.Count == 0 && ChangedEquipmentVirtualTags.Count == 0;
 
     public sealed record EquipmentDelta(EquipmentNode Previous, EquipmentNode Current);
     public sealed record DriverDelta(DriverInstancePlan Previous, DriverInstancePlan Current);
     public sealed record AlarmDelta(ScriptedAlarmPlan Previous, ScriptedAlarmPlan Current);
     public sealed record GalaxyTagDelta(GalaxyTagPlan Previous, GalaxyTagPlan Current);
     public sealed record EquipmentTagDelta(EquipmentTagPlan Previous, EquipmentTagPlan Current);
+    public sealed record EquipmentVirtualTagDelta(EquipmentVirtualTagPlan Previous, EquipmentVirtualTagPlan Current);
 }
 
 public static class Phase7Planner
@@ -95,6 +112,15 @@ public static class Phase7Planner
             t => t.TagId,
             (a, b) => new Phase7Plan.EquipmentTagDelta(a, b));
 
+        // VirtualTags diff by VirtualTagId, mirroring the EquipmentTags pass. Element equality on
+        // EquipmentVirtualTagPlan compares its scalar fields (Expression/DataType/Name/FolderPath/…)
+        // by value; DependencyRefs (an IReadOnlyList<string>) compares by reference, so a fresh list
+        // instance is conservatively treated as changed — fine for a rebuild trigger.
+        var (addedVTags, removedVTags, changedVTags) = DiffById(
+            previous.EquipmentVirtualTags, next.EquipmentVirtualTags,
+            t => t.VirtualTagId,
+            (a, b) => new Phase7Plan.EquipmentVirtualTagDelta(a, b));
+
         return new Phase7Plan(
             addedEq, removedEq, changedEq,
             addedDrv, removedDrv, changedDrv,
@@ -104,6 +130,9 @@ public static class Phase7Planner
             AddedEquipmentTags = addedEqTags,
             RemovedEquipmentTags = removedEqTags,
             ChangedEquipmentTags = changedEqTags,
+            AddedEquipmentVirtualTags = addedVTags,
+            RemovedEquipmentVirtualTags = removedVTags,
+            ChangedEquipmentVirtualTags = changedVTags,
         };
     }