refactor(opcuaserver): rename Phase7* address-space pipeline to AddressSpace*

The OPC UA address-space build pipeline was named after a v2-roadmap
milestone number rather than its domain. Rename the family to describe
what it does (build/diff/apply the OPC UA address space):

  Phase7Composer          -> AddressSpaceComposer
  Phase7CompositionResult -> AddressSpaceComposition
  Phase7Planner           -> AddressSpacePlanner
  Phase7Plan              -> AddressSpacePlan
  Phase7Applier           -> AddressSpaceApplier
  Phase7ApplyOutcome      -> AddressSpaceApplyOutcome

The 9 Phase7*Tests suites follow suit; Phase7ScriptingEntitiesTests ->
ScriptingEntitiesTests (it tests the scripting migration, not the
pipeline). Log-message prefixes move to the new class names.

Pure mechanical rename, no behavioral change. EF migration classes/IDs
(AddPhase7ScriptingTables, ExtendComputeGenerationDiffWithPhase7) are
immutable and left untouched, as are historical design docs.

Build clean; OpcUaServer 261/261, Runtime 272/272, ScriptingEntities
12/12 green.

tests/Server/ZB.MOM.WW.OtOpcUa.Host.IntegrationTests/EquipmentNamespaceMaterializationTests.cs

@@ -20,7 +20,7 @@ namespace ZB.MOM.WW.OtOpcUa.Host.IntegrationTests;
 /// seam that the OpcUaServer unit tests only approximate with hand-built JSON.
 /// <para>
 /// The OPC UA address-space browse is exercised separately against a real SDK node manager in
-/// <c>Phase7ApplierHierarchyTests.Equipment_namespace_structure_materialises_end_to_end_against_real_SDK</c>,
+/// <c>AddressSpaceApplierHierarchyTests.Equipment_namespace_structure_materialises_end_to_end_against_real_SDK</c>,
 /// because the in-process <see cref="TwoNodeClusterHarness"/> binds the no-op address-space sink.
 /// </para>
 /// </summary>

tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests/AddressSpaceApplierHierarchyTests.cs

@@ -10,13 +10,13 @@ using ZB.MOM.WW.OtOpcUa.Configuration.Enums;
 namespace ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests;
 
 /// <summary>
-/// #85 — verifies <see cref="Phase7Applier.MaterialiseHierarchy"/> builds the UNS
+/// #85 — verifies <see cref="AddressSpaceApplier.MaterialiseHierarchy"/> builds the UNS
 /// Area/Line/Equipment folder tree through <see cref="IOpcUaAddressSpaceSink.EnsureFolder"/>.
 /// One pure unit test (recording sink) confirms ordering + parenting; one boot-verify test
 /// drives a real <see cref="OtOpcUaNodeManager"/> and inspects the resulting predefined-node
 /// count to prove the folders land in the SDK address space.
 /// </summary>
-public sealed class Phase7ApplierHierarchyTests : IDisposable
+public sealed class AddressSpaceApplierHierarchyTests : IDisposable
 {
     private static CancellationToken Ct => TestContext.Current.CancellationToken;
 
@@ -29,9 +29,9 @@ public sealed class Phase7ApplierHierarchyTests : IDisposable
     public void MaterialiseHierarchy_creates_areas_then_lines_then_equipment_with_correct_parents()
     {
         var sink = new RecordingFolderSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             UnsAreas: new[] { new UnsAreaProjection("area-1", "Plant North") },
             UnsLines: new[] { new UnsLineProjection("line-1", "area-1", "Cell A") },
             EquipmentNodes: new[] { new EquipmentNode("eq-1", "Pump-1", "line-1") },
@@ -52,9 +52,9 @@ public sealed class Phase7ApplierHierarchyTests : IDisposable
     public void MaterialiseHierarchy_orphan_equipment_hangs_under_root()
     {
         var sink = new RecordingFolderSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             UnsAreas: Array.Empty<UnsAreaProjection>(),
             UnsLines: Array.Empty<UnsLineProjection>(),
             EquipmentNodes: new[] { new EquipmentNode("eq-orphan", "Orphan", UnsLineId: "") },
@@ -86,9 +86,9 @@ public sealed class Phase7ApplierHierarchyTests : IDisposable
         sdkServer.NodeManager.ShouldNotBeNull();
 
         var sink = new SdkAddressSpaceSink(sdkServer.NodeManager!);
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        applier.MaterialiseHierarchy(new Phase7CompositionResult(
+        applier.MaterialiseHierarchy(new AddressSpaceComposition(
             UnsAreas: new[] { new UnsAreaProjection("area-A", "Area A"), new UnsAreaProjection("area-B", "Area B") },
             UnsLines: new[] { new UnsLineProjection("line-1", "area-A", "Line 1") },
             EquipmentNodes: new[] { new EquipmentNode("eq-1", "Eq 1", "line-1"), new EquipmentNode("eq-2", "Eq 2", "line-1") },
@@ -98,7 +98,7 @@ public sealed class Phase7ApplierHierarchyTests : IDisposable
         sdkServer.NodeManager!.FolderCount.ShouldBe(5); // 2 areas + 1 line + 2 equipment
 
         // Idempotent: re-applying with the same composition doesn't create duplicates.
-        applier.MaterialiseHierarchy(new Phase7CompositionResult(
+        applier.MaterialiseHierarchy(new AddressSpaceComposition(
             UnsAreas: new[] { new UnsAreaProjection("area-A", "Area A"), new UnsAreaProjection("area-B", "Area B") },
             UnsLines: new[] { new UnsLineProjection("line-1", "area-A", "Line 1") },
             EquipmentNodes: new[] { new EquipmentNode("eq-1", "Eq 1", "line-1"), new EquipmentNode("eq-2", "Eq 2", "line-1") },
@@ -132,9 +132,9 @@ public sealed class Phase7ApplierHierarchyTests : IDisposable
         sdkServer.NodeManager.ShouldNotBeNull();
 
         var sink = new SdkAddressSpaceSink(sdkServer.NodeManager!);
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             UnsAreas: Array.Empty<UnsAreaProjection>(),
             UnsLines: Array.Empty<UnsLineProjection>(),
             EquipmentNodes: new[] { new EquipmentNode("eq-1", "filling-eq", UnsLineId: "") },
@@ -157,7 +157,7 @@ public sealed class Phase7ApplierHierarchyTests : IDisposable
 
     /// <summary>
     ///     Full structure-materialisation pipeline against a real SDK node manager: real Config
-    ///     entities (Area / Line / Equipment + an Equipment-namespace Tag) → <see cref="Phase7Composer.Compose"/>
+    ///     entities (Area / Line / Equipment + an Equipment-namespace Tag) → <see cref="AddressSpaceComposer.Compose"/>
     ///     → MaterialiseHierarchy + MaterialiseEquipmentTags → <see cref="OtOpcUaNodeManager"/>. Proves
     ///     an Equipment namespace lands its Area/Line/Equipment folder tree + the equipment-signal
     ///     Variable in a live OPC UA address space (structure-only; live values are a later milestone).
@@ -192,7 +192,7 @@ public sealed class Phase7ApplierHierarchyTests : IDisposable
         var equipment = new Equipment { EquipmentId = "eq-1", DriverInstanceId = "drv-modbus", UnsLineId = "nw-line-1", Name = "station-1", MachineCode = "STATION_001" };
         var tag = new Tag { TagId = "tag-speed", DriverInstanceId = "drv-modbus", EquipmentId = "eq-1", Name = "Speed", DataType = "Float", AccessLevel = TagAccessLevel.Read, TagConfig = "{\"FullName\":\"40001\"}" };
 
-        var composition = Phase7Composer.Compose(
+        var composition = AddressSpaceComposer.Compose(
             new[] { area }, new[] { line }, new[] { equipment }, new[] { driver },
             Array.Empty<ScriptedAlarm>(), new[] { tag }, new[] { ns });
 
@@ -202,7 +202,7 @@ public sealed class Phase7ApplierHierarchyTests : IDisposable
         planned.FullName.ShouldBe("40001");
 
         var sink = new SdkAddressSpaceSink(sdkServer.NodeManager!);
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
         applier.MaterialiseHierarchy(composition);
         applier.MaterialiseEquipmentTags(composition);
 

tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests/AddressSpaceApplierTests.cs

@@ -6,14 +6,14 @@ using ZB.MOM.WW.OtOpcUa.Commons.OpcUa;
 
 namespace ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests;
 
-public sealed class Phase7ApplierTests
+public sealed class AddressSpaceApplierTests
 {
     /// <summary>Verifies that an empty plan does not call the sink or trigger a rebuild.</summary>
     [Fact]
     public void Empty_plan_does_not_call_sink_and_does_not_trigger_rebuild()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var outcome = applier.Apply(EmptyPlan);
 
@@ -30,7 +30,7 @@ public sealed class Phase7ApplierTests
     public void Removed_equipment_writes_inactive_alarm_state_per_id_and_triggers_rebuild()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var plan = WithEquipmentRemoval("eq-1", "eq-2");
         var outcome = applier.Apply(plan);
@@ -48,18 +48,18 @@ public sealed class Phase7ApplierTests
     public void Added_equipment_triggers_rebuild_without_alarm_writes()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var plan = new Phase7Plan(
+        var plan = new AddressSpacePlan(
             AddedEquipment: new[] { new EquipmentNode("new", "New", "line-1") },
             RemovedEquipment: Array.Empty<EquipmentNode>(),
-            ChangedEquipment: Array.Empty<Phase7Plan.EquipmentDelta>(),
+            ChangedEquipment: Array.Empty<AddressSpacePlan.EquipmentDelta>(),
             AddedDrivers: Array.Empty<DriverInstancePlan>(),
             RemovedDrivers: Array.Empty<DriverInstancePlan>(),
-            ChangedDrivers: Array.Empty<Phase7Plan.DriverDelta>(),
+            ChangedDrivers: Array.Empty<AddressSpacePlan.DriverDelta>(),
             AddedAlarms: Array.Empty<ScriptedAlarmPlan>(),
             RemovedAlarms: Array.Empty<ScriptedAlarmPlan>(),
-            ChangedAlarms: Array.Empty<Phase7Plan.AlarmDelta>());
+            ChangedAlarms: Array.Empty<AddressSpacePlan.AlarmDelta>());
 
         var outcome = applier.Apply(plan);
 
@@ -74,23 +74,23 @@ public sealed class Phase7ApplierTests
     public void Driver_only_changes_do_not_trigger_address_space_rebuild()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var plan = new Phase7Plan(
+        var plan = new AddressSpacePlan(
             AddedEquipment: Array.Empty<EquipmentNode>(),
             RemovedEquipment: Array.Empty<EquipmentNode>(),
-            ChangedEquipment: Array.Empty<Phase7Plan.EquipmentDelta>(),
+            ChangedEquipment: Array.Empty<AddressSpacePlan.EquipmentDelta>(),
             AddedDrivers: new[] { new DriverInstancePlan("d-new", "Modbus", "{}") },
             RemovedDrivers: Array.Empty<DriverInstancePlan>(),
             ChangedDrivers: new[]
             {
-                new Phase7Plan.DriverDelta(
+                new AddressSpacePlan.DriverDelta(
                     new DriverInstancePlan("d-1", "Modbus", "{\"v\":1}"),
                     new DriverInstancePlan("d-1", "Modbus", "{\"v\":2}")),
             },
             AddedAlarms: Array.Empty<ScriptedAlarmPlan>(),
             RemovedAlarms: Array.Empty<ScriptedAlarmPlan>(),
-            ChangedAlarms: Array.Empty<Phase7Plan.AlarmDelta>());
+            ChangedAlarms: Array.Empty<AddressSpacePlan.AlarmDelta>());
 
         var outcome = applier.Apply(plan);
 
@@ -103,7 +103,7 @@ public sealed class Phase7ApplierTests
     public void Sink_exception_in_WriteAlarmCondition_does_not_propagate_and_rebuild_still_fires()
     {
         var sink = new ThrowingSink(throwOnAlarmWrite: true);
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var plan = WithEquipmentRemoval("eq-1");
 
@@ -120,9 +120,9 @@ public sealed class Phase7ApplierTests
     public void MaterialiseEquipmentTags_creates_variable_under_equipment_folder()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             UnsAreas: Array.Empty<UnsAreaProjection>(),
             UnsLines: Array.Empty<UnsLineProjection>(),
             EquipmentNodes: Array.Empty<EquipmentNode>(),
@@ -151,9 +151,9 @@ public sealed class Phase7ApplierTests
     public void MaterialiseEquipmentTags_nests_FolderPath_subfolder_under_equipment()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -178,9 +178,9 @@ public sealed class Phase7ApplierTests
     public void MaterialiseEquipmentTags_identical_FullName_across_two_equipments_does_not_collide()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -206,9 +206,9 @@ public sealed class Phase7ApplierTests
     public void MaterialiseEquipmentTags_alarm_bearing_tag_becomes_condition_plain_tag_stays_variable()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -241,9 +241,9 @@ public sealed class Phase7ApplierTests
     public void MaterialiseEquipmentTags_alarm_bearing_tag_with_FolderPath_conditions_under_subfolder()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -271,9 +271,9 @@ public sealed class Phase7ApplierTests
     public void MaterialiseEquipmentTags_resolves_historian_tagname_default_override_and_null()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -304,9 +304,9 @@ public sealed class Phase7ApplierTests
     public void MaterialiseEquipmentTags_blank_override_falls_back_to_full_name()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -324,16 +324,16 @@ public sealed class Phase7ApplierTests
     }
 
     /// <summary>Array-support Task 2 — an <see cref="EquipmentTagPlan"/> with <c>IsArray: true,
-    /// ArrayLength: 16</c> flowing through <see cref="Phase7Applier.MaterialiseEquipmentTags"/> must
+    /// ArrayLength: 16</c> flowing through <see cref="AddressSpaceApplier.MaterialiseEquipmentTags"/> must
     /// forward BOTH flags verbatim to the sink's <c>EnsureVariable</c>. Guards against arg-order swaps or
     /// accidental drops in the wire-through.</summary>
     [Fact]
     public void MaterialiseEquipmentTags_array_plan_forwards_isArray_and_arrayLength_to_sink()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -358,9 +358,9 @@ public sealed class Phase7ApplierTests
     public void MaterialiseEquipmentTags_scalar_plan_forwards_isArray_false_to_sink()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -387,9 +387,9 @@ public sealed class Phase7ApplierTests
     public void MaterialiseEquipmentTags_array_writable_true_is_forced_read_only()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -417,9 +417,9 @@ public sealed class Phase7ApplierTests
     public void MaterialiseEquipmentTags_scalar_writable_true_stays_writable()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -446,9 +446,9 @@ public sealed class Phase7ApplierTests
     public void MaterialiseEquipmentVirtualTags_creates_variable_under_equipment_folder()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentVirtualTags = new[]
@@ -469,7 +469,7 @@ public sealed class Phase7ApplierTests
 
     /// <summary>Golden/parity guard: the materialiser's Variable NodeId for BOTH the equipment-tag and
     /// the equipment-VirtualTag pass is byte-identical to <see cref="EquipmentNodeIds.Variable"/> — the
-    /// single source of truth Phase7Applier + VirtualTagHostActor both point at. Covers null/empty
+    /// single source of truth AddressSpaceApplier + VirtualTagHostActor both point at. Covers null/empty
     /// FolderPath (directly under equipment) and a non-empty FolderPath (sub-folder scoped). This test
     /// LOCKS the formula against drift: any change to the materialiser NodeId that diverges from the
     /// shared helper fails here.</summary>
@@ -477,9 +477,9 @@ public sealed class Phase7ApplierTests
     public void Materialised_variable_node_ids_match_shared_EquipmentNodeIds_formula()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -512,9 +512,9 @@ public sealed class Phase7ApplierTests
     public void MaterialiseEquipmentVirtualTags_two_under_same_equipment_do_not_collide()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentVirtualTags = new[]
@@ -541,9 +541,9 @@ public sealed class Phase7ApplierTests
     public void MaterialiseScriptedAlarms_materialises_enabled_and_skips_disabled()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var composition = new Phase7CompositionResult(
+        var composition = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentScriptedAlarms = new[]
@@ -574,7 +574,7 @@ public sealed class Phase7ApplierTests
     public void Added_equipment_tags_trigger_rebuild()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var plan = EmptyPlan with
         {
@@ -598,7 +598,7 @@ public sealed class Phase7ApplierTests
     public void Added_equipment_virtual_tags_trigger_rebuild()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var plan = EmptyPlan with
         {
@@ -624,7 +624,7 @@ public sealed class Phase7ApplierTests
     public void Changed_equipment_tags_only_trigger_rebuild()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float", FullName: "40001", Writable: false, Alarm: null));
@@ -632,7 +632,7 @@ public sealed class Phase7ApplierTests
         var next = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Int32", FullName: "40001", Writable: true, Alarm: null));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
 
         // Guard the arrange: ONLY ChangedEquipmentTags is populated.
         plan.ChangedEquipmentTags.Count.ShouldBe(1);
@@ -659,7 +659,7 @@ public sealed class Phase7ApplierTests
     public void Changed_virtual_tag_expression_only_skips_rebuild()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithVirtualTags(
             new EquipmentVirtualTagPlan("vt-1", "eq-1", FolderPath: "", Name: "Efficiency", DataType: "Float64",
@@ -669,7 +669,7 @@ public sealed class Phase7ApplierTests
             new EquipmentVirtualTagPlan("vt-1", "eq-1", FolderPath: "", Name: "Efficiency", DataType: "Float64",
                 Expression: "ctx.GetTag(\"a\") * 120", DependencyRefs: new[] { "a" }));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
 
         // Guard the arrange: ONLY ChangedEquipmentVirtualTags is populated.
         plan.ChangedEquipmentVirtualTags.Count.ShouldBe(1);
@@ -690,7 +690,7 @@ public sealed class Phase7ApplierTests
     public void Changed_virtual_tag_dependency_refs_only_skips_rebuild()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithVirtualTags(
             new EquipmentVirtualTagPlan("vt-1", "eq-1", FolderPath: "", Name: "Efficiency", DataType: "Float64",
@@ -703,7 +703,7 @@ public sealed class Phase7ApplierTests
             new EquipmentVirtualTagPlan("vt-1", "eq-1", FolderPath: "", Name: "Efficiency", DataType: "Float64",
                 Expression: "ctx.GetTag(\"a\")", DependencyRefs: new[] { "a", "b" }));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
         plan.ChangedEquipmentVirtualTags.Count.ShouldBe(1);
 
         var outcome = applier.Apply(plan);
@@ -719,7 +719,7 @@ public sealed class Phase7ApplierTests
     public void Changed_virtual_tag_historize_only_skips_rebuild()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithVirtualTags(
             new EquipmentVirtualTagPlan("vt-1", "eq-1", FolderPath: "", Name: "Efficiency", DataType: "Float64",
@@ -729,7 +729,7 @@ public sealed class Phase7ApplierTests
             new EquipmentVirtualTagPlan("vt-1", "eq-1", FolderPath: "", Name: "Efficiency", DataType: "Float64",
                 Expression: "ctx.GetTag(\"a\")", DependencyRefs: new[] { "a" }, Historize: true));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
         plan.ChangedEquipmentVirtualTags.Count.ShouldBe(1);
 
         var outcome = applier.Apply(plan);
@@ -747,7 +747,7 @@ public sealed class Phase7ApplierTests
     public void Changed_virtual_tag_data_type_change_still_rebuilds()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithVirtualTags(
             new EquipmentVirtualTagPlan("vt-1", "eq-1", FolderPath: "", Name: "Efficiency", DataType: "Float64",
@@ -757,7 +757,7 @@ public sealed class Phase7ApplierTests
             new EquipmentVirtualTagPlan("vt-1", "eq-1", FolderPath: "", Name: "Efficiency", DataType: "Int32",
                 Expression: "ctx.GetTag(\"a\") * 60", DependencyRefs: new[] { "a" }));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
         plan.ChangedEquipmentVirtualTags.Count.ShouldBe(1);
 
         var outcome = applier.Apply(plan);
@@ -772,7 +772,7 @@ public sealed class Phase7ApplierTests
     public void Changed_virtual_tag_name_change_still_rebuilds()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithVirtualTags(
             new EquipmentVirtualTagPlan("vt-1", "eq-1", FolderPath: "", Name: "Efficiency", DataType: "Float64",
@@ -781,7 +781,7 @@ public sealed class Phase7ApplierTests
             new EquipmentVirtualTagPlan("vt-1", "eq-1", FolderPath: "", Name: "EfficiencyPct", DataType: "Float64",
                 Expression: "ctx.GetTag(\"a\")", DependencyRefs: new[] { "a" }));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
         plan.ChangedEquipmentVirtualTags.Count.ShouldBe(1);
 
         var outcome = applier.Apply(plan);
@@ -796,7 +796,7 @@ public sealed class Phase7ApplierTests
     public void Changed_virtual_tag_folder_path_change_still_rebuilds()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithVirtualTags(
             new EquipmentVirtualTagPlan("vt-1", "eq-1", FolderPath: "", Name: "Efficiency", DataType: "Float64",
@@ -805,7 +805,7 @@ public sealed class Phase7ApplierTests
             new EquipmentVirtualTagPlan("vt-1", "eq-1", FolderPath: "Calc", Name: "Efficiency", DataType: "Float64",
                 Expression: "ctx.GetTag(\"a\")", DependencyRefs: new[] { "a" }));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
         plan.ChangedEquipmentVirtualTags.Count.ShouldBe(1);
 
         var outcome = applier.Apply(plan);
@@ -822,9 +822,9 @@ public sealed class Phase7ApplierTests
     public void Node_irrelevant_vtag_edit_mixed_with_another_change_still_rebuilds()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var previous = new Phase7CompositionResult(
+        var previous = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -838,7 +838,7 @@ public sealed class Phase7ApplierTests
             },
         };
         // Expression-only vtag edit (node-irrelevant) AND a node-affecting tag DataType flip.
-        var next = new Phase7CompositionResult(
+        var next = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -852,7 +852,7 @@ public sealed class Phase7ApplierTests
             },
         };
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
 
         // Both a node-irrelevant vtag change AND a node-affecting tag change are present.
         plan.ChangedEquipmentVirtualTags.Count.ShouldBe(1);
@@ -873,7 +873,7 @@ public sealed class Phase7ApplierTests
     public void Changed_virtual_tag_equipment_id_triggers_rebuild()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithVirtualTags(
             new EquipmentVirtualTagPlan("vt-1", "eq-1", FolderPath: "", Name: "Efficiency", DataType: "Float64",
@@ -884,7 +884,7 @@ public sealed class Phase7ApplierTests
             new EquipmentVirtualTagPlan("vt-1", "eq-2", FolderPath: "", Name: "Efficiency", DataType: "Float64",
                 Expression: "ctx.GetTag(\"a\")", DependencyRefs: new[] { "a" }));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
 
         // Guard the arrange: the planner sees this as a changed vtag (same id, different EquipmentId).
         plan.ChangedEquipmentVirtualTags.Count.ShouldBe(1);
@@ -907,9 +907,9 @@ public sealed class Phase7ApplierTests
     public void Changed_virtual_tags_one_irrelevant_one_structural_triggers_rebuild()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var previous = new Phase7CompositionResult(
+        var previous = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentVirtualTags = new[]
@@ -922,7 +922,7 @@ public sealed class Phase7ApplierTests
                     Expression: "ctx.GetTag(\"load\")", DependencyRefs: new[] { "load" }),
             },
         };
-        var next = new Phase7CompositionResult(
+        var next = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentVirtualTags = new[]
@@ -936,7 +936,7 @@ public sealed class Phase7ApplierTests
             },
         };
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
 
         // Guard the arrange: both vtags are diffed as changed, nothing else.
         plan.ChangedEquipmentVirtualTags.Count.ShouldBe(2);
@@ -961,13 +961,13 @@ public sealed class Phase7ApplierTests
     public void Changed_alarms_only_trigger_rebuild()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithAlarms(new ScriptedAlarmPlan("alm-1", "eq-1", "scr-1", "Temp high"));
         // Same alarm id, edited message template — the planner classifies this as a change.
         var next = CompositionWithAlarms(new ScriptedAlarmPlan("alm-1", "eq-1", "scr-1", "Temp critically high"));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
 
         // Guard the arrange: ONLY ChangedAlarms is populated.
         plan.ChangedAlarms.Count.ShouldBe(1);
@@ -991,12 +991,12 @@ public sealed class Phase7ApplierTests
     public void Changed_drivers_only_do_not_trigger_rebuild()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithDrivers(new DriverInstancePlan("d-1", "Modbus", "{\"v\":1}"));
         var next = CompositionWithDrivers(new DriverInstancePlan("d-1", "Modbus", "{\"v\":2}"));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
 
         // Guard the arrange: ONLY ChangedDrivers is populated.
         plan.ChangedDrivers.Count.ShouldBe(1);
@@ -1017,15 +1017,15 @@ public sealed class Phase7ApplierTests
     /// <summary>H1a (review follow-up) — a deploy that ONLY removes existing equipment tag / VirtualTag
     /// nodes must rebuild AND tally the removals. Removed tags/VirtualTags are plain variable nodes (no
     /// Part 9 condition to write), so before the fix they reached the rebuild path but were never added
-    /// to <c>removedCount</c> — <c>Phase7ApplyOutcome.RemovedNodes</c> reported 0, a misleading audit
+    /// to <c>removedCount</c> — <c>AddressSpaceApplyOutcome.RemovedNodes</c> reported 0, a misleading audit
     /// entry. This pins both the rebuild and the accurate count.</summary>
     [Fact]
     public void Removed_equipment_tags_and_virtual_tags_only_rebuild_and_are_counted()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var previous = new Phase7CompositionResult(
+        var previous = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -1038,10 +1038,10 @@ public sealed class Phase7ApplierTests
                     Expression: "ctx.GetTag(\"a\")", DependencyRefs: new[] { "a" }),
             },
         };
-        var next = new Phase7CompositionResult(
+        var next = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
 
         // Guard the arrange: ONLY the two Removed sets are populated.
         plan.RemovedEquipmentTags.Count.ShouldBe(1);
@@ -1069,7 +1069,7 @@ public sealed class Phase7ApplierTests
     public void Changed_tag_writable_only_skips_rebuild_and_updates_in_place()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float", FullName: "40001", Writable: false, Alarm: null));
@@ -1077,7 +1077,7 @@ public sealed class Phase7ApplierTests
         var next = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float", FullName: "40001", Writable: true, Alarm: null));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
         plan.ChangedEquipmentTags.Count.ShouldBe(1);
         plan.AddedEquipmentTags.ShouldBeEmpty();
         plan.RemovedEquipmentTags.ShouldBeEmpty();
@@ -1101,8 +1101,8 @@ public sealed class Phase7ApplierTests
     {
         // false → true (no override) ⇒ historian defaults to FullName.
         var sinkOn = new RecordingSink();
-        var applierOn = new Phase7Applier(sinkOn, NullLogger<Phase7Applier>.Instance);
-        var planOn = Phase7Planner.Compute(
+        var applierOn = new AddressSpaceApplier(sinkOn, NullLogger<AddressSpaceApplier>.Instance);
+        var planOn = AddressSpacePlanner.Compute(
             CompositionWithTags(new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float",
                 FullName: "T.A", Writable: false, Alarm: null, IsHistorized: false, HistorianTagname: null)),
             CompositionWithTags(new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float",
@@ -1117,8 +1117,8 @@ public sealed class Phase7ApplierTests
 
         // true → false ⇒ historian null.
         var sinkOff = new RecordingSink();
-        var applierOff = new Phase7Applier(sinkOff, NullLogger<Phase7Applier>.Instance);
-        var planOff = Phase7Planner.Compute(
+        var applierOff = new AddressSpaceApplier(sinkOff, NullLogger<AddressSpaceApplier>.Instance);
+        var planOff = AddressSpacePlanner.Compute(
             CompositionWithTags(new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float",
                 FullName: "T.A", Writable: false, Alarm: null, IsHistorized: true, HistorianTagname: null)),
             CompositionWithTags(new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float",
@@ -1138,7 +1138,7 @@ public sealed class Phase7ApplierTests
     public void Changed_tag_historian_tagname_only_skips_rebuild()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float",
@@ -1147,7 +1147,7 @@ public sealed class Phase7ApplierTests
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float",
                 FullName: "T.A", Writable: false, Alarm: null, IsHistorized: true, HistorianTagname: "WW.New"));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
         plan.ChangedEquipmentTags.Count.ShouldBe(1);
 
         var outcome = applier.Apply(plan);
@@ -1163,7 +1163,7 @@ public sealed class Phase7ApplierTests
     public void Changed_tag_data_type_change_rebuilds_and_no_surgical_call()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float", FullName: "40001", Writable: false, Alarm: null));
@@ -1171,7 +1171,7 @@ public sealed class Phase7ApplierTests
         var next = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Int32", FullName: "40001", Writable: true, Alarm: null));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
         plan.ChangedEquipmentTags.Count.ShouldBe(1);
 
         var outcome = applier.Apply(plan);
@@ -1187,7 +1187,7 @@ public sealed class Phase7ApplierTests
     public void Changed_tag_is_array_change_rebuilds()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Buffer", DataType: "Int16",
@@ -1196,7 +1196,7 @@ public sealed class Phase7ApplierTests
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Buffer", DataType: "Int16",
                 FullName: "40001", Writable: false, Alarm: null, IsArray: true, ArrayLength: 16u));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
         plan.ChangedEquipmentTags.Count.ShouldBe(1);
 
         var outcome = applier.Apply(plan);
@@ -1212,14 +1212,14 @@ public sealed class Phase7ApplierTests
     public void Changed_tag_full_name_change_rebuilds()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float", FullName: "40001", Writable: false, Alarm: null));
         var next = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float", FullName: "40002", Writable: false, Alarm: null));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
         plan.ChangedEquipmentTags.Count.ShouldBe(1);
 
         var outcome = applier.Apply(plan);
@@ -1235,14 +1235,14 @@ public sealed class Phase7ApplierTests
     public void Changed_tag_name_change_rebuilds()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float", FullName: "40001", Writable: false, Alarm: null));
         var next = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "SpeedRpm", DataType: "Float", FullName: "40001", Writable: false, Alarm: null));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
         plan.ChangedEquipmentTags.Count.ShouldBe(1);
 
         var outcome = applier.Apply(plan);
@@ -1259,7 +1259,7 @@ public sealed class Phase7ApplierTests
     public void Changed_tag_alarm_presence_change_rebuilds()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "OverTemp", DataType: "Boolean", FullName: "00001", Writable: false, Alarm: null));
@@ -1267,7 +1267,7 @@ public sealed class Phase7ApplierTests
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "OverTemp", DataType: "Boolean", FullName: "00001", Writable: false,
                 Alarm: new EquipmentTagAlarmInfo("OffNormalAlarm", 700)));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
         plan.ChangedEquipmentTags.Count.ShouldBe(1);
 
         var outcome = applier.Apply(plan);
@@ -1288,7 +1288,7 @@ public sealed class Phase7ApplierTests
     public void Changed_alarm_bearing_tag_writable_only_still_rebuilds()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         // Both previous and current carry an identical, non-null alarm — the tag is an alarm-bearing node.
         var alarm = new EquipmentTagAlarmInfo("OffNormalAlarm", 700);
@@ -1300,7 +1300,7 @@ public sealed class Phase7ApplierTests
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "OverTemp", DataType: "Boolean",
                 FullName: "00001", Writable: true, Alarm: alarm));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
 
         // Guard the arrange: the planner sees a changed tag (Writable differs) and nothing else.
         plan.ChangedEquipmentTags.Count.ShouldBe(1);
@@ -1323,10 +1323,10 @@ public sealed class Phase7ApplierTests
     public void Two_surgical_eligible_tag_deltas_both_apply_in_place_no_rebuild()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         // Two distinct plain (no-alarm) tags, both will flip Writable — both are surgical-eligible.
-        var previous = new Phase7CompositionResult(
+        var previous = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -1336,7 +1336,7 @@ public sealed class Phase7ApplierTests
             },
         };
         // Only Writable flips on both tags; everything else is identical.
-        var next = new Phase7CompositionResult(
+        var next = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -1346,7 +1346,7 @@ public sealed class Phase7ApplierTests
             },
         };
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
 
         // Guard the arrange: exactly two changed tags, nothing else.
         plan.ChangedEquipmentTags.Count.ShouldBe(2);
@@ -1380,9 +1380,9 @@ public sealed class Phase7ApplierTests
     public void Surgical_eligible_tag_delta_mixed_with_added_equipment_rebuilds()
     {
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
-        var previous = new Phase7CompositionResult(
+        var previous = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -1391,7 +1391,7 @@ public sealed class Phase7ApplierTests
             },
         };
         // Surgical-eligible Writable flip on the tag AND a brand-new equipment node.
-        var next = new Phase7CompositionResult(
+        var next = new AddressSpaceComposition(
             new[] { new EquipmentNode("eq-new", "New", "line-1") }, Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -1400,7 +1400,7 @@ public sealed class Phase7ApplierTests
             },
         };
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
         plan.ChangedEquipmentTags.Count.ShouldBe(1);
         plan.AddedEquipment.Count.ShouldBe(1);
 
@@ -1418,14 +1418,14 @@ public sealed class Phase7ApplierTests
     public void Surgical_eligible_delta_on_non_surgical_sink_rebuilds()
     {
         var sink = new PlainRecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float", FullName: "40001", Writable: false, Alarm: null));
         var next = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float", FullName: "40001", Writable: true, Alarm: null));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
         plan.ChangedEquipmentTags.Count.ShouldBe(1);
 
         var outcome = applier.Apply(plan);
@@ -1441,14 +1441,14 @@ public sealed class Phase7ApplierTests
     public void Surgical_sink_returning_false_node_missing_falls_back_to_rebuild()
     {
         var sink = new RecordingSink { SurgicalReturns = false };
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         var previous = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float", FullName: "40001", Writable: false, Alarm: null));
         var next = CompositionWithTags(
             new EquipmentTagPlan("tag-1", "eq-1", "drv", FolderPath: "", Name: "Speed", DataType: "Float", FullName: "40001", Writable: true, Alarm: null));
 
-        var plan = Phase7Planner.Compute(previous, next);
+        var plan = AddressSpacePlanner.Compute(previous, next);
         plan.ChangedEquipmentTags.Count.ShouldBe(1);
 
         var outcome = applier.Apply(plan);
@@ -1458,44 +1458,44 @@ public sealed class Phase7ApplierTests
         sink.SurgicalCalls.ShouldHaveSingleItem();     // the surgical update was attempted first
     }
 
-    private static Phase7CompositionResult CompositionWithTags(params EquipmentTagPlan[] tags) =>
+    private static AddressSpaceComposition CompositionWithTags(params EquipmentTagPlan[] tags) =>
         new(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = tags,
         };
 
-    private static Phase7CompositionResult CompositionWithVirtualTags(params EquipmentVirtualTagPlan[] vtags) =>
+    private static AddressSpaceComposition CompositionWithVirtualTags(params EquipmentVirtualTagPlan[] vtags) =>
         new(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentVirtualTags = vtags,
         };
 
-    private static Phase7CompositionResult CompositionWithAlarms(params ScriptedAlarmPlan[] alarms) =>
+    private static AddressSpaceComposition CompositionWithAlarms(params ScriptedAlarmPlan[] alarms) =>
         // ScriptedAlarmPlans is the set the planner diffs into Added/Removed/ChangedAlarms.
         new(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), alarms);
 
-    private static Phase7CompositionResult CompositionWithDrivers(params DriverInstancePlan[] drivers) =>
+    private static AddressSpaceComposition CompositionWithDrivers(params DriverInstancePlan[] drivers) =>
         new(
             Array.Empty<EquipmentNode>(), drivers, Array.Empty<ScriptedAlarmPlan>());
 
-    private static Phase7Plan EmptyPlan => new(
-        Array.Empty<EquipmentNode>(), Array.Empty<EquipmentNode>(), Array.Empty<Phase7Plan.EquipmentDelta>(),
-        Array.Empty<DriverInstancePlan>(), Array.Empty<DriverInstancePlan>(), Array.Empty<Phase7Plan.DriverDelta>(),
-        Array.Empty<ScriptedAlarmPlan>(), Array.Empty<ScriptedAlarmPlan>(), Array.Empty<Phase7Plan.AlarmDelta>());
+    private static AddressSpacePlan EmptyPlan => new(
+        Array.Empty<EquipmentNode>(), Array.Empty<EquipmentNode>(), Array.Empty<AddressSpacePlan.EquipmentDelta>(),
+        Array.Empty<DriverInstancePlan>(), Array.Empty<DriverInstancePlan>(), Array.Empty<AddressSpacePlan.DriverDelta>(),
+        Array.Empty<ScriptedAlarmPlan>(), Array.Empty<ScriptedAlarmPlan>(), Array.Empty<AddressSpacePlan.AlarmDelta>());
 
-    private static Phase7Plan WithEquipmentRemoval(params string[] ids) => new(
+    private static AddressSpacePlan WithEquipmentRemoval(params string[] ids) => new(
         AddedEquipment: Array.Empty<EquipmentNode>(),
         RemovedEquipment: ids.Select(id => new EquipmentNode(id, id, "line-1")).ToArray(),
-        ChangedEquipment: Array.Empty<Phase7Plan.EquipmentDelta>(),
+        ChangedEquipment: Array.Empty<AddressSpacePlan.EquipmentDelta>(),
         AddedDrivers: Array.Empty<DriverInstancePlan>(),
         RemovedDrivers: Array.Empty<DriverInstancePlan>(),
-        ChangedDrivers: Array.Empty<Phase7Plan.DriverDelta>(),
+        ChangedDrivers: Array.Empty<AddressSpacePlan.DriverDelta>(),
         AddedAlarms: Array.Empty<ScriptedAlarmPlan>(),
         RemovedAlarms: Array.Empty<ScriptedAlarmPlan>(),
-        ChangedAlarms: Array.Empty<Phase7Plan.AlarmDelta>());
+        ChangedAlarms: Array.Empty<AddressSpacePlan.AlarmDelta>());
 
     private sealed class RecordingSink : IOpcUaAddressSpaceSink, ISurgicalAddressSpaceSink
     {

tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests/AddressSpaceComposerAliasTagTests.cs

@@ -6,13 +6,13 @@ using ZB.MOM.WW.OtOpcUa.Configuration.Enums;
 namespace ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests;
 
 /// <summary>
-///     Verifies the live-edit compose seam (<see cref="Phase7Composer.Compose"/>) treats a Galaxy
+///     Verifies the live-edit compose seam (<see cref="AddressSpaceComposer.Compose"/>) treats a Galaxy
 ///     point as an ordinary equipment tag: <c>GalaxyMxGateway</c> is a standard Equipment-kind driver.
 ///     An equipment-scoped <see cref="Tag"/> (non-null <see cref="Tag.EquipmentId"/>) bound to a
 ///     <c>GalaxyMxGateway</c> driver living in an <c>Equipment</c>-kind namespace must surface under
-///     <see cref="Phase7CompositionResult.EquipmentTags"/> (carrying its driver-side FullName).
+///     <see cref="AddressSpaceComposition.EquipmentTags"/> (carrying its driver-side FullName).
 /// </summary>
-public sealed class Phase7ComposerAliasTagTests
+public sealed class AddressSpaceComposerAliasTagTests
 {
     /// <summary>A <c>GalaxyMxGateway</c> driver in an Equipment-kind namespace carries an
     /// equipment-scoped Galaxy tag (EquipmentId set, FolderPath null, TagConfig FullName = the Galaxy
@@ -61,7 +61,7 @@ public sealed class Phase7ComposerAliasTagTests
             TagConfig = "{\"FullName\":\"TestMachine_020.TestChangingInt\"}",
         };
 
-        var result = Phase7Composer.Compose(
+        var result = AddressSpaceComposer.Compose(
             new[] { area }, new[] { line }, new[] { equip },
             new[] { driver }, Array.Empty<ScriptedAlarm>(),
             new[] { galaxyTag }, new[] { ns });

tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests/AddressSpaceComposerEquipTokenTests.cs

@@ -6,12 +6,12 @@ using ZB.MOM.WW.OtOpcUa.Configuration.Enums;
 namespace ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests;
 
 /// <summary>
-/// Verifies the live-edit compose seam (<see cref="Phase7Composer.Compose"/>) substitutes the
+/// Verifies the live-edit compose seam (<see cref="AddressSpaceComposer.Compose"/>) substitutes the
 /// reserved <c>{{equip}}</c> token in a shared VirtualTag script with each owning equipment's
 /// derived tag base (from its child-tag <c>FullName</c>s) — so one script reused across N
 /// identical machines resolves to N machine-specific dependency graphs.
 /// </summary>
-public sealed class Phase7ComposerEquipTokenTests
+public sealed class AddressSpaceComposerEquipTokenTests
 {
     /// <summary>One shared <see cref="Script"/> using <c>ctx.GetTag("{{equip}}.Source")</c>, bound
     /// to two equipments (TestMachine_001 / _002) each with one equipment Tag whose FullName carries
@@ -79,7 +79,7 @@ public sealed class Phase7ComposerEquipTokenTests
         var vt1 = new VirtualTag { VirtualTagId = "vt-1", EquipmentId = "eq-1", Name = "over50", DataType = "Boolean", ScriptId = "s-equip" };
         var vt2 = new VirtualTag { VirtualTagId = "vt-2", EquipmentId = "eq-2", Name = "over50", DataType = "Boolean", ScriptId = "s-equip" };
 
-        var result = Phase7Composer.Compose(
+        var result = AddressSpaceComposer.Compose(
             new[] { area }, new[] { line }, new[] { equip1, equip2 },
             new[] { driver1, driver2 }, Array.Empty<ScriptedAlarm>(),
             new[] { tag1, tag2 }, new[] { ns },

tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests/AddressSpaceComposerPurityTests.cs

@@ -4,13 +4,13 @@ using ZB.MOM.WW.OtOpcUa.Configuration.Entities;
 
 namespace ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests;
 
-public sealed class Phase7ComposerPurityTests
+public sealed class AddressSpaceComposerPurityTests
 {
     /// <summary>Verifies empty inputs produce empty result.</summary>
     [Fact]
     public void Empty_inputs_produce_empty_result()
     {
-        var result = Phase7Composer.Compose(
+        var result = AddressSpaceComposer.Compose(
             equipment: Array.Empty<Equipment>(),
             driverInstances: Array.Empty<DriverInstance>(),
             scriptedAlarms: Array.Empty<ScriptedAlarm>());
@@ -31,12 +31,12 @@ public sealed class Phase7ComposerPurityTests
         var a1 = NewAlarm("a-1", "eq-1");
         var a2 = NewAlarm("a-2", "eq-2");
 
-        var r1 = Phase7Composer.Compose(
+        var r1 = AddressSpaceComposer.Compose(
             equipment: new[] { e1, e2 },
             driverInstances: new[] { d1, d2 },
             scriptedAlarms: new[] { a1, a2 });
 
-        var r2 = Phase7Composer.Compose(
+        var r2 = AddressSpaceComposer.Compose(
             equipment: new[] { e2, e1 },
             driverInstances: new[] { d2, d1 },
             scriptedAlarms: new[] { a2, a1 });
@@ -54,8 +54,8 @@ public sealed class Phase7ComposerPurityTests
         var drivers = new[] { NewDriver("drv-x") };
         var alarms = new[] { NewAlarm("alarm-1", "eq-a") };
 
-        var r1 = Phase7Composer.Compose(equipment, drivers, alarms);
-        var r2 = Phase7Composer.Compose(equipment, drivers, alarms);
+        var r1 = AddressSpaceComposer.Compose(equipment, drivers, alarms);
+        var r2 = AddressSpaceComposer.Compose(equipment, drivers, alarms);
 
         // Record equality won't help here — IReadOnlyList<T> uses reference equality. Compare
         // element-wise to verify the pure-function contract.
@@ -69,7 +69,7 @@ public sealed class Phase7ComposerPurityTests
     public void Output_is_sorted_by_natural_key()
     {
         var equipment = new[] { NewEquipment("z"), NewEquipment("a"), NewEquipment("m") };
-        var result = Phase7Composer.Compose(equipment, Array.Empty<DriverInstance>(), Array.Empty<ScriptedAlarm>());
+        var result = AddressSpaceComposer.Compose(equipment, Array.Empty<DriverInstance>(), Array.Empty<ScriptedAlarm>());
 
         result.EquipmentNodes.Select(e => e.EquipmentId)
             .ShouldBe(new[] { "a", "m", "z" });
@@ -83,7 +83,7 @@ public sealed class Phase7ComposerPurityTests
     {
         var equipment = new[] { NewEquipment("filling-eq") }; // Name="filling-eq", MachineCode="FILLING-EQ"
 
-        var node = Phase7Composer.Compose(equipment, Array.Empty<DriverInstance>(), Array.Empty<ScriptedAlarm>())
+        var node = AddressSpaceComposer.Compose(equipment, Array.Empty<DriverInstance>(), Array.Empty<ScriptedAlarm>())
             .EquipmentNodes.ShouldHaveSingleItem();
 
         node.EquipmentId.ShouldBe("filling-eq");    // NodeId stays the logical Id
@@ -94,7 +94,7 @@ public sealed class Phase7ComposerPurityTests
     [Fact]
     public void Composition_carries_empty_equipment_virtualtags_by_default()
     {
-        var r = new Phase7CompositionResult(
+        var r = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
         r.EquipmentVirtualTags.ShouldBeEmpty();
     }
@@ -133,7 +133,7 @@ public sealed class Phase7ComposerPurityTests
             SourceHash = "hash-1",
         };
 
-        var result = Phase7Composer.Compose(
+        var result = AddressSpaceComposer.Compose(
             Array.Empty<UnsArea>(), Array.Empty<UnsLine>(), Array.Empty<Equipment>(),
             Array.Empty<DriverInstance>(), Array.Empty<ScriptedAlarm>(),
             Array.Empty<Tag>(), Array.Empty<Namespace>(),
@@ -171,7 +171,7 @@ public sealed class Phase7ComposerPurityTests
             SourceHash = "hash-1",
         };
 
-        var result = Phase7Composer.Compose(
+        var result = AddressSpaceComposer.Compose(
             Array.Empty<UnsArea>(), Array.Empty<UnsLine>(), Array.Empty<Equipment>(),
             Array.Empty<DriverInstance>(), Array.Empty<ScriptedAlarm>(),
             Array.Empty<Tag>(), Array.Empty<Namespace>(),
@@ -197,7 +197,7 @@ public sealed class Phase7ComposerPurityTests
             ScriptId = "s-does-not-exist",
         };
 
-        var result = Phase7Composer.Compose(
+        var result = AddressSpaceComposer.Compose(
             Array.Empty<UnsArea>(), Array.Empty<UnsLine>(), Array.Empty<Equipment>(),
             Array.Empty<DriverInstance>(), Array.Empty<ScriptedAlarm>(),
             Array.Empty<Tag>(), Array.Empty<Namespace>(),

tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests/AddressSpaceComposerScriptedAlarmTests.cs

@@ -5,7 +5,7 @@ using ZB.MOM.WW.OtOpcUa.Configuration.Entities;
 namespace ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests;
 
 /// <summary>
-/// Verifies the live-edit compose seam (<see cref="Phase7Composer.Compose"/>) builds the richer
+/// Verifies the live-edit compose seam (<see cref="AddressSpaceComposer.Compose"/>) builds the richer
 /// per-equipment scripted-alarm projection (<see cref="EquipmentScriptedAlarmPlan"/>): each alarm
 /// is joined to its predicate <see cref="Script"/> for the source, carries the parsed
 /// <c>ctx.GetTag("…")</c> read refs UNION the <c>{TagPath}</c> tokens referenced in its
@@ -13,7 +13,7 @@ namespace ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests;
 /// (including disabled alarms). The projection is deterministic so the upcoming
 /// artifact-byte-parity test (sibling task) is reliable.
 /// </summary>
-public sealed class Phase7ComposerScriptedAlarmTests
+public sealed class AddressSpaceComposerScriptedAlarmTests
 {
     /// <summary>Two equipments, each with a scripted alarm whose predicate script reads one tag via
     /// <c>ctx.GetTag("X.Y")</c>. Each plan must carry the resolved PredicateSource, DependencyRefs
@@ -62,7 +62,7 @@ public sealed class Phase7ComposerScriptedAlarmTests
             Enabled = true,
         };
 
-        var result = Phase7Composer.Compose(
+        var result = AddressSpaceComposer.Compose(
             Array.Empty<UnsArea>(), Array.Empty<UnsLine>(), Array.Empty<Equipment>(),
             Array.Empty<DriverInstance>(), new[] { alarm1, alarm2 },
             Array.Empty<Tag>(), Array.Empty<Namespace>(),
@@ -118,7 +118,7 @@ public sealed class Phase7ComposerScriptedAlarmTests
             PredicateScriptId = "s-1",
         };
 
-        var result = Phase7Composer.Compose(
+        var result = AddressSpaceComposer.Compose(
             Array.Empty<UnsArea>(), Array.Empty<UnsLine>(), Array.Empty<Equipment>(),
             Array.Empty<DriverInstance>(), new[] { alarm },
             Array.Empty<Tag>(), Array.Empty<Namespace>(),
@@ -155,7 +155,7 @@ public sealed class Phase7ComposerScriptedAlarmTests
             PredicateScriptId = "s-1",
         };
 
-        var result = Phase7Composer.Compose(
+        var result = AddressSpaceComposer.Compose(
             Array.Empty<UnsArea>(), Array.Empty<UnsLine>(), Array.Empty<Equipment>(),
             Array.Empty<DriverInstance>(), new[] { alarm },
             Array.Empty<Tag>(), Array.Empty<Namespace>(),
@@ -199,7 +199,7 @@ public sealed class Phase7ComposerScriptedAlarmTests
             PredicateScriptId = "s-does-not-exist",
         };
 
-        var result = Phase7Composer.Compose(
+        var result = AddressSpaceComposer.Compose(
             Array.Empty<UnsArea>(), Array.Empty<UnsLine>(), Array.Empty<Equipment>(),
             Array.Empty<DriverInstance>(), new[] { goodAlarm, orphanAlarm },
             Array.Empty<Tag>(), Array.Empty<Namespace>(),
@@ -234,7 +234,7 @@ public sealed class Phase7ComposerScriptedAlarmTests
             Enabled = false,
         };
 
-        var result = Phase7Composer.Compose(
+        var result = AddressSpaceComposer.Compose(
             Array.Empty<UnsArea>(), Array.Empty<UnsLine>(), Array.Empty<Equipment>(),
             Array.Empty<DriverInstance>(), new[] { alarm },
             Array.Empty<Tag>(), Array.Empty<Namespace>(),
@@ -261,12 +261,12 @@ public sealed class Phase7ComposerScriptedAlarmTests
         var a3 = NewAlarm("al-3", "eq-1", "s-3");
         var scripts = new[] { script1, script2, script3 };
 
-        var r1 = Phase7Composer.Compose(
+        var r1 = AddressSpaceComposer.Compose(
             Array.Empty<UnsArea>(), Array.Empty<UnsLine>(), Array.Empty<Equipment>(),
             Array.Empty<DriverInstance>(), new[] { a1, a2, a3 },
             Array.Empty<Tag>(), Array.Empty<Namespace>(), scripts: scripts);
 
-        var r2 = Phase7Composer.Compose(
+        var r2 = AddressSpaceComposer.Compose(
             Array.Empty<UnsArea>(), Array.Empty<UnsLine>(), Array.Empty<Equipment>(),
             Array.Empty<DriverInstance>(), new[] { a3, a1, a2 },
             Array.Empty<Tag>(), Array.Empty<Namespace>(), scripts: scripts);
@@ -282,7 +282,7 @@ public sealed class Phase7ComposerScriptedAlarmTests
     [Fact]
     public void Composition_carries_empty_scripted_alarms_by_default()
     {
-        var r = new Phase7CompositionResult(
+        var r = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
         r.EquipmentScriptedAlarms.ShouldBeEmpty();
     }

tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests/AddressSpaceComposerVirtualTagHistorizeTests.cs

@@ -6,13 +6,13 @@ using ZB.MOM.WW.OtOpcUa.Configuration.Enums;
 namespace ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests;
 
 /// <summary>
-/// Verifies the live-edit compose seam (<see cref="Phase7Composer.Compose"/>) carries the
+/// Verifies the live-edit compose seam (<see cref="AddressSpaceComposer.Compose"/>) carries the
 /// <see cref="VirtualTag.Historize"/> entity column onto the resulting
 /// <see cref="EquipmentVirtualTagPlan.Historize"/> (H5a). The flag was authored in the UI but
 /// never threaded onto the plan, leaving equipment-namespace runtime historization dead. Both a
 /// true and a false case are asserted so the default (false) and the explicit set both prove out.
 /// </summary>
-public sealed class Phase7ComposerVirtualTagHistorizeTests
+public sealed class AddressSpaceComposerVirtualTagHistorizeTests
 {
     [Fact]
     public void Compose_carries_virtual_tag_historize_flag_onto_plan()
@@ -57,7 +57,7 @@ public sealed class Phase7ComposerVirtualTagHistorizeTests
         var vtHist = new VirtualTag { VirtualTagId = "vt-hist", EquipmentId = "eq-1", Name = "Historized", DataType = "Int32", ScriptId = "s-1", Historize = true };
         var vtPlain = new VirtualTag { VirtualTagId = "vt-plain", EquipmentId = "eq-1", Name = "Plain", DataType = "Int32", ScriptId = "s-1", Historize = false };
 
-        var result = Phase7Composer.Compose(
+        var result = AddressSpaceComposer.Compose(
             new[] { area }, new[] { line }, new[] { equip },
             new[] { driver }, Array.Empty<ScriptedAlarm>(),
             new[] { tag }, new[] { ns },

tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests/AddressSpacePlannerTests.cs

@@ -3,16 +3,16 @@ using Xunit;
 
 namespace ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests;
 
-public sealed class Phase7PlannerTests
+public sealed class AddressSpacePlannerTests
 {
     /// <summary>Verifies that empty inputs produce an empty plan.</summary>
     [Fact]
     public void Empty_inputs_produce_empty_plan()
     {
-        var prev = new Phase7CompositionResult(Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
+        var prev = new AddressSpaceComposition(Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
         var next = prev;
 
-        var plan = Phase7Planner.Compute(prev, next);
+        var plan = AddressSpacePlanner.Compute(prev, next);
 
         plan.IsEmpty.ShouldBeTrue();
     }
@@ -22,10 +22,10 @@ public sealed class Phase7PlannerTests
     public void Identical_compositions_produce_empty_plan()
     {
         var eq = new EquipmentNode("eq-1", "Eq 1", "line-1");
-        var prev = new Phase7CompositionResult(new[] { eq }, Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
-        var next = new Phase7CompositionResult(new[] { eq }, Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
+        var prev = new AddressSpaceComposition(new[] { eq }, Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
+        var next = new AddressSpaceComposition(new[] { eq }, Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
 
-        var plan = Phase7Planner.Compute(prev, next);
+        var plan = AddressSpacePlanner.Compute(prev, next);
 
         plan.IsEmpty.ShouldBeTrue();
     }
@@ -36,9 +36,9 @@ public sealed class Phase7PlannerTests
     [Fact]
     public void Equipment_tag_only_change_yields_non_empty_plan_with_added_tag()
     {
-        var prev = new Phase7CompositionResult(
+        var prev = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
-        var next = new Phase7CompositionResult(
+        var next = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -47,7 +47,7 @@ public sealed class Phase7PlannerTests
             },
         };
 
-        var plan = Phase7Planner.Compute(prev, next);
+        var plan = AddressSpacePlanner.Compute(prev, next);
 
         plan.IsEmpty.ShouldBeFalse();
         plan.AddedEquipmentTags.Single().TagId.ShouldBe("tag-1");
@@ -61,9 +61,9 @@ public sealed class Phase7PlannerTests
     [Fact]
     public void Equipment_virtual_tag_only_change_yields_non_empty_plan_with_added_tag()
     {
-        var prev = new Phase7CompositionResult(
+        var prev = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
-        var next = new Phase7CompositionResult(
+        var next = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentVirtualTags = new[]
@@ -73,7 +73,7 @@ public sealed class Phase7PlannerTests
             },
         };
 
-        var plan = Phase7Planner.Compute(prev, next);
+        var plan = AddressSpacePlanner.Compute(prev, next);
 
         plan.IsEmpty.ShouldBeFalse();
         plan.AddedEquipmentVirtualTags.Single().VirtualTagId.ShouldBe("vt-1");
@@ -85,7 +85,7 @@ public sealed class Phase7PlannerTests
     [Fact]
     public void Disappeared_virtual_tag_goes_to_RemovedEquipmentVirtualTags()
     {
-        var prev = new Phase7CompositionResult(
+        var prev = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentVirtualTags = new[]
@@ -94,10 +94,10 @@ public sealed class Phase7PlannerTests
                     Expression: "a + b", DependencyRefs: new[] { "a", "b" }),
             },
         };
-        var next = new Phase7CompositionResult(
+        var next = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
 
-        var plan = Phase7Planner.Compute(prev, next);
+        var plan = AddressSpacePlanner.Compute(prev, next);
 
         plan.IsEmpty.ShouldBeFalse();
         plan.RemovedEquipmentVirtualTags.Single().VirtualTagId.ShouldBe("vt-1");
@@ -111,7 +111,7 @@ public sealed class Phase7PlannerTests
     [Fact]
     public void Same_id_with_different_expression_routes_to_ChangedEquipmentVirtualTags()
     {
-        var prev = new Phase7CompositionResult(
+        var prev = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentVirtualTags = new[]
@@ -120,7 +120,7 @@ public sealed class Phase7PlannerTests
                     Expression: "a + b", DependencyRefs: new[] { "a", "b" }),
             },
         };
-        var next = new Phase7CompositionResult(
+        var next = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentVirtualTags = new[]
@@ -130,7 +130,7 @@ public sealed class Phase7PlannerTests
             },
         };
 
-        var plan = Phase7Planner.Compute(prev, next);
+        var plan = AddressSpacePlanner.Compute(prev, next);
 
         plan.IsEmpty.ShouldBeFalse();
         plan.ChangedEquipmentVirtualTags.Single().Previous.Expression.ShouldBe("a + b");
@@ -146,7 +146,7 @@ public sealed class Phase7PlannerTests
     [Fact]
     public void Same_id_with_toggled_historize_routes_to_ChangedEquipmentVirtualTags()
     {
-        var prev = new Phase7CompositionResult(
+        var prev = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentVirtualTags = new[]
@@ -155,7 +155,7 @@ public sealed class Phase7PlannerTests
                     Expression: "a + b", DependencyRefs: new[] { "a", "b" }, Historize: false),
             },
         };
-        var next = new Phase7CompositionResult(
+        var next = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentVirtualTags = new[]
@@ -165,7 +165,7 @@ public sealed class Phase7PlannerTests
             },
         };
 
-        var plan = Phase7Planner.Compute(prev, next);
+        var plan = AddressSpacePlanner.Compute(prev, next);
 
         plan.IsEmpty.ShouldBeFalse();
         plan.ChangedEquipmentVirtualTags.Single().Previous.Historize.ShouldBeFalse();
@@ -181,7 +181,7 @@ public sealed class Phase7PlannerTests
     [Fact]
     public void Same_id_with_toggled_isarray_routes_to_ChangedEquipmentTags()
     {
-        var prev = new Phase7CompositionResult(
+        var prev = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -190,7 +190,7 @@ public sealed class Phase7PlannerTests
                     FullName: "40001", Writable: false, Alarm: null, IsArray: false, ArrayLength: null),
             },
         };
-        var next = new Phase7CompositionResult(
+        var next = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentTags = new[]
@@ -200,7 +200,7 @@ public sealed class Phase7PlannerTests
             },
         };
 
-        var plan = Phase7Planner.Compute(prev, next);
+        var plan = AddressSpacePlanner.Compute(prev, next);
 
         plan.IsEmpty.ShouldBeFalse();
         plan.ChangedEquipmentTags.Single().Previous.IsArray.ShouldBeFalse();
@@ -221,7 +221,7 @@ public sealed class Phase7PlannerTests
         var refsA = new[] { "EQ1.Speed", "EQ1.Torque" };
         var refsB = new[] { "EQ1.Speed", "EQ1.Torque" };
 
-        var prev = new Phase7CompositionResult(
+        var prev = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentVirtualTags = new[]
@@ -230,7 +230,7 @@ public sealed class Phase7PlannerTests
                     Expression: "ctx.GetTag(\"EQ1.Speed\") / ctx.GetTag(\"EQ1.Torque\")", DependencyRefs: refsA),
             },
         };
-        var next = new Phase7CompositionResult(
+        var next = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>())
         {
             EquipmentVirtualTags = new[]
@@ -240,7 +240,7 @@ public sealed class Phase7PlannerTests
             },
         };
 
-        var plan = Phase7Planner.Compute(prev, next);
+        var plan = AddressSpacePlanner.Compute(prev, next);
 
         plan.IsEmpty.ShouldBeTrue();
         plan.ChangedEquipmentVirtualTags.ShouldBeEmpty();
@@ -252,13 +252,13 @@ public sealed class Phase7PlannerTests
     [Fact]
     public void New_equipment_goes_to_AddedEquipment()
     {
-        var prev = new Phase7CompositionResult(Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
-        var next = new Phase7CompositionResult(
+        var prev = new AddressSpaceComposition(Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
+        var next = new AddressSpaceComposition(
             new[] { new EquipmentNode("eq-1", "A", "line-1") },
             Array.Empty<DriverInstancePlan>(),
             Array.Empty<ScriptedAlarmPlan>());
 
-        var plan = Phase7Planner.Compute(prev, next);
+        var plan = AddressSpacePlanner.Compute(prev, next);
 
         plan.AddedEquipment.Single().EquipmentId.ShouldBe("eq-1");
         plan.RemovedEquipment.ShouldBeEmpty();
@@ -269,13 +269,13 @@ public sealed class Phase7PlannerTests
     [Fact]
     public void Disappeared_equipment_goes_to_RemovedEquipment()
     {
-        var prev = new Phase7CompositionResult(
+        var prev = new AddressSpaceComposition(
             new[] { new EquipmentNode("eq-1", "A", "line-1") },
             Array.Empty<DriverInstancePlan>(),
             Array.Empty<ScriptedAlarmPlan>());
-        var next = new Phase7CompositionResult(Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
+        var next = new AddressSpaceComposition(Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
 
-        var plan = Phase7Planner.Compute(prev, next);
+        var plan = AddressSpacePlanner.Compute(prev, next);
 
         plan.RemovedEquipment.Single().EquipmentId.ShouldBe("eq-1");
         plan.AddedEquipment.ShouldBeEmpty();
@@ -285,16 +285,16 @@ public sealed class Phase7PlannerTests
     [Fact]
     public void Same_id_with_different_display_name_routes_to_ChangedEquipment()
     {
-        var prev = new Phase7CompositionResult(
+        var prev = new AddressSpaceComposition(
             new[] { new EquipmentNode("eq-1", "Old", "line-1") },
             Array.Empty<DriverInstancePlan>(),
             Array.Empty<ScriptedAlarmPlan>());
-        var next = new Phase7CompositionResult(
+        var next = new AddressSpaceComposition(
             new[] { new EquipmentNode("eq-1", "New", "line-1") },
             Array.Empty<DriverInstancePlan>(),
             Array.Empty<ScriptedAlarmPlan>());
 
-        var plan = Phase7Planner.Compute(prev, next);
+        var plan = AddressSpacePlanner.Compute(prev, next);
 
         plan.ChangedEquipment.Single().Previous.DisplayName.ShouldBe("Old");
         plan.ChangedEquipment.Single().Current.DisplayName.ShouldBe("New");
@@ -306,16 +306,16 @@ public sealed class Phase7PlannerTests
     [Fact]
     public void Driver_config_change_routes_to_ChangedDrivers()
     {
-        var prev = new Phase7CompositionResult(
+        var prev = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(),
             new[] { new DriverInstancePlan("drv-1", "Modbus", "{\"host\":\"old\"}") },
             Array.Empty<ScriptedAlarmPlan>());
-        var next = new Phase7CompositionResult(
+        var next = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(),
             new[] { new DriverInstancePlan("drv-1", "Modbus", "{\"host\":\"new\"}") },
             Array.Empty<ScriptedAlarmPlan>());
 
-        var plan = Phase7Planner.Compute(prev, next);
+        var plan = AddressSpacePlanner.Compute(prev, next);
 
         plan.ChangedDrivers.Single().Current.ConfigJson.ShouldContain("new");
     }
@@ -324,16 +324,16 @@ public sealed class Phase7PlannerTests
     [Fact]
     public void Alarm_message_template_change_routes_to_ChangedAlarms()
     {
-        var prev = new Phase7CompositionResult(
+        var prev = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(),
             Array.Empty<DriverInstancePlan>(),
             new[] { new ScriptedAlarmPlan("a-1", "eq-1", "script-1", "old") });
-        var next = new Phase7CompositionResult(
+        var next = new AddressSpaceComposition(
             Array.Empty<EquipmentNode>(),
             Array.Empty<DriverInstancePlan>(),
             new[] { new ScriptedAlarmPlan("a-1", "eq-1", "script-1", "new") });
 
-        var plan = Phase7Planner.Compute(prev, next);
+        var plan = AddressSpacePlanner.Compute(prev, next);
 
         plan.ChangedAlarms.Single().Current.MessageTemplate.ShouldBe("new");
     }
@@ -342,13 +342,13 @@ public sealed class Phase7PlannerTests
     [Fact]
     public void Added_and_removed_lists_are_sorted_by_id_for_deterministic_ordering()
     {
-        var prev = new Phase7CompositionResult(
+        var prev = new AddressSpaceComposition(
             new[] { new EquipmentNode("z", "Z", "line-1"), new EquipmentNode("a", "A", "line-1") },
             Array.Empty<DriverInstancePlan>(),
             Array.Empty<ScriptedAlarmPlan>());
-        var next = new Phase7CompositionResult(Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
+        var next = new AddressSpaceComposition(Array.Empty<EquipmentNode>(), Array.Empty<DriverInstancePlan>(), Array.Empty<ScriptedAlarmPlan>());
 
-        var plan = Phase7Planner.Compute(prev, next);
+        var plan = AddressSpacePlanner.Compute(prev, next);
 
         plan.RemovedEquipment.Select(e => e.EquipmentId).ShouldBe(new[] { "a", "z" });
     }
@@ -357,16 +357,16 @@ public sealed class Phase7PlannerTests
     [Fact]
     public void Mixed_changes_across_all_three_classes_are_captured_in_one_pass()
     {
-        var prev = new Phase7CompositionResult(
+        var prev = new AddressSpaceComposition(
             new[] { new EquipmentNode("eq-keep", "Keep", "line-1"), new EquipmentNode("eq-drop", "Drop", "line-1") },
             new[] { new DriverInstancePlan("drv-keep", "Modbus", "{}"), new DriverInstancePlan("drv-change", "Modbus", "{\"v\":1}") },
             new[] { new ScriptedAlarmPlan("a-keep", "eq-keep", "s1", "t1") });
-        var next = new Phase7CompositionResult(
+        var next = new AddressSpaceComposition(
             new[] { new EquipmentNode("eq-keep", "Keep", "line-1"), new EquipmentNode("eq-new", "New", "line-1") },
             new[] { new DriverInstancePlan("drv-keep", "Modbus", "{}"), new DriverInstancePlan("drv-change", "Modbus", "{\"v\":2}") },
             new[] { new ScriptedAlarmPlan("a-keep", "eq-keep", "s1", "t1"), new ScriptedAlarmPlan("a-new", "eq-new", "s2", "t2") });
 
-        var plan = Phase7Planner.Compute(prev, next);
+        var plan = AddressSpacePlanner.Compute(prev, next);
 
         plan.AddedEquipment.Single().EquipmentId.ShouldBe("eq-new");
         plan.RemovedEquipment.Single().EquipmentId.ShouldBe("eq-drop");

tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests/DeferredAddressSpaceSinkTests.cs

@@ -84,7 +84,7 @@ public sealed class DeferredAddressSpaceSinkTests
     }
 
     /// <summary>F10b regression: the deferred wrapper MUST forward the surgical capability to a
-    /// surgical inner sink — otherwise <c>Phase7Applier</c> (which injects THIS wrapper on every
+    /// surgical inner sink — otherwise <c>AddressSpaceApplier</c> (which injects THIS wrapper on every
     /// driver-role host, not the inner <c>SdkAddressSpaceSink</c>) never sees the capability and the
     /// in-place tag-attribute optimization is inert in production (it silently falls back to rebuild).</summary>
     [Fact]

tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests/ExtractTagAlarmTests.cs

@@ -14,7 +14,7 @@ public class ExtractTagAlarmTests
     [InlineData("{\"FullName\":\"X.Y\",\"alarm\":\"oops\"}", false, null, 0)]
     public void ExtractTagAlarm_parses_or_returns_null(string cfg, bool present, string? type, int sev)
     {
-        var info = Phase7Composer.ExtractTagAlarm(cfg);
+        var info = AddressSpaceComposer.ExtractTagAlarm(cfg);
         if (!present) { info.ShouldBeNull(); return; }
         info!.AlarmType.ShouldBe(type);
         info.Severity.ShouldBe(sev);
@@ -30,7 +30,7 @@ public class ExtractTagAlarmTests
     [InlineData("{\"alarm\":{\"alarmType\":\"LimitAlarm\",\"severity\":500,\"historizeToAveva\":\"oops\"}}", null)]
     public void ExtractTagAlarm_parses_historizeToAveva(string cfg, bool? expected)
     {
-        var info = Phase7Composer.ExtractTagAlarm(cfg);
+        var info = AddressSpaceComposer.ExtractTagAlarm(cfg);
         info.ShouldNotBeNull();
         info!.HistorizeToAveva.ShouldBe(expected);
     }

tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests/ExtractTagArrayTests.cs

@@ -7,12 +7,12 @@ using ZB.MOM.WW.OtOpcUa.OpcUaServer;
 namespace ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests;
 
 /// <summary>
-///     Verifies <see cref="Phase7Composer.ExtractTagArray"/> parses the optional array intent from a
-///     tag's <c>TagConfig</c> JSON exactly as <see cref="Phase7Composer.ExtractTagHistorize"/> parses
+///     Verifies <see cref="AddressSpaceComposer.ExtractTagArray"/> parses the optional array intent from a
+///     tag's <c>TagConfig</c> JSON exactly as <see cref="AddressSpaceComposer.ExtractTagHistorize"/> parses
 ///     the historize intent: the <c>isArray</c> bool (absent / not a bool / non-object root / blank /
 ///     malformed ⇒ <c>false</c>) and the optional <c>arrayLength</c> uint (only honoured when
 ///     <c>isArray</c> is true AND the prop is a JSON number that fits uint; else <c>null</c>). Never
-///     throws. Also pins the end-to-end <see cref="Phase7Composer.Compose"/> thread-through onto
+///     throws. Also pins the end-to-end <see cref="AddressSpaceComposer.Compose"/> thread-through onto
 ///     <see cref="EquipmentTagPlan.IsArray"/> / <see cref="EquipmentTagPlan.ArrayLength"/>.
 /// </summary>
 public class ExtractTagArrayTests
@@ -45,13 +45,13 @@ public class ExtractTagArrayTests
     [InlineData("{\"isArray\":true,\"arrayLength\":4294967296}", true, null)]
     public void ExtractTagArray_parses_or_returns_defaults(string? cfg, bool expectedIsArray, uint? expectedLength)
     {
-        var (isArray, arrayLength) = Phase7Composer.ExtractTagArray(cfg);
+        var (isArray, arrayLength) = AddressSpaceComposer.ExtractTagArray(cfg);
         isArray.ShouldBe(expectedIsArray);
         arrayLength.ShouldBe(expectedLength);
     }
 
     /// <summary>End-to-end: an equipment tag whose TagConfig carries <c>isArray</c>/<c>arrayLength</c>
-    /// surfaces those on its <see cref="EquipmentTagPlan"/> through <see cref="Phase7Composer.Compose"/>,
+    /// surfaces those on its <see cref="EquipmentTagPlan"/> through <see cref="AddressSpaceComposer.Compose"/>,
     /// exactly as the historize keys thread through.</summary>
     [Fact]
     public void Compose_threads_array_keys_onto_equipment_tag_plan()
@@ -94,7 +94,7 @@ public class ExtractTagArrayTests
             TagConfig = "{\"FullName\":\"40001\",\"isArray\":true,\"arrayLength\":16}",
         };
 
-        var result = Phase7Composer.Compose(
+        var result = AddressSpaceComposer.Compose(
             new[] { area }, new[] { line }, new[] { equip },
             new[] { driver }, Array.Empty<ScriptedAlarm>(),
             new[] { arrayTag }, new[] { ns });
@@ -147,7 +147,7 @@ public class ExtractTagArrayTests
             TagConfig = "{\"FullName\":\"40005\"}",
         };
 
-        var result = Phase7Composer.Compose(
+        var result = AddressSpaceComposer.Compose(
             new[] { area }, new[] { line }, new[] { equip },
             new[] { driver }, Array.Empty<ScriptedAlarm>(),
             new[] { scalarTag }, new[] { ns });

tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests/ExtractTagHistorizeTests.cs

@@ -28,7 +28,7 @@ public class ExtractTagHistorizeTests
     [InlineData("{\"isHistorized\":true,\"historianTagname\":123}", true, null)]
     public void ExtractTagHistorize_parses_or_returns_defaults(string? cfg, bool expectedHistorized, string? expectedTagname)
     {
-        var (isHistorized, historianTagname) = Phase7Composer.ExtractTagHistorize(cfg);
+        var (isHistorized, historianTagname) = AddressSpaceComposer.ExtractTagHistorize(cfg);
         isHistorized.ShouldBe(expectedHistorized);
         historianTagname.ShouldBe(expectedTagname);
     }

tests/Server/ZB.MOM.WW.OtOpcUa.Runtime.Tests/Drivers/DeploymentArtifactAliasParityTests.cs

@@ -178,7 +178,7 @@ public sealed class DeploymentArtifactAliasParityTests
 
     /// <summary>
     ///     The load-bearing direct byte-parity proof for the two equipment-tag producers: for the SAME
-    ///     input draft, the live-edit composer (<see cref="Phase7Composer.Compose"/>) and the
+    ///     input draft, the live-edit composer (<see cref="AddressSpaceComposer.Compose"/>) and the
     ///     artifact decoder (<see cref="DeploymentArtifact.ParseComposition(System.ReadOnlySpan{byte})"/>)
     ///     must emit IDENTICAL <c>EquipmentTags</c> — element-wise equal on every field
     ///     (TagId, EquipmentId, DriverInstanceId, FolderPath, Name, DataType, FullName) AND in the same
@@ -275,7 +275,7 @@ public sealed class DeploymentArtifactAliasParityTests
         var namespaces = new[] { ns };
 
         // ---- Side 1: the live-edit composer ----
-        var composed = Phase7Composer.Compose(
+        var composed = AddressSpaceComposer.Compose(
             areas, lines, equipment, drivers, Array.Empty<ScriptedAlarm>(), tags, namespaces);
 
         // ---- Side 2: serialise the SAME draft to the artifact blob shape ConfigComposer emits
@@ -349,7 +349,7 @@ public sealed class DeploymentArtifactAliasParityTests
     ///     The native-alarm <c>historizeToAveva</c> opt-out (bool?, the per-condition durable-AVEVA-write
     ///     gate) is parsed by BOTH equipment-tag producers' <c>ExtractTagAlarm</c> and MUST stay byte-parity:
     ///     for the SAME tag TagConfig carrying <c>alarm.historizeToAveva: true</c> (and <c>: false</c>), the
-    ///     live-edit composer (<see cref="Phase7Composer.Compose"/>) and the artifact decoder
+    ///     live-edit composer (<see cref="AddressSpaceComposer.Compose"/>) and the artifact decoder
     ///     (<see cref="DeploymentArtifact.ParseComposition(System.ReadOnlySpan{byte})"/>) must derive the
     ///     identical <c>EquipmentTagAlarmInfo.HistorizeToAveva</c>. The galaxy-tag parity test above already
     ///     covers the absent ⇒ null case; this pins the explicit-bool branch on both sides.
@@ -399,7 +399,7 @@ public sealed class DeploymentArtifactAliasParityTests
         };
 
         // ---- Side 1: the live-edit composer ----
-        var composed = Phase7Composer.Compose(
+        var composed = AddressSpaceComposer.Compose(
             new[] { area }, new[] { line }, new[] { equip }, new[] { driver },
             Array.Empty<ScriptedAlarm>(), new[] { alarmTag }, new[] { ns });
 

tests/Server/ZB.MOM.WW.OtOpcUa.Runtime.Tests/Drivers/DeploymentArtifactArrayParityTests.cs

@@ -12,7 +12,7 @@ namespace ZB.MOM.WW.OtOpcUa.Runtime.Tests.Drivers;
 /// <summary>
 ///     Proves the Phase 4c array intent (<c>isArray</c> + optional <c>arrayLength</c>), which rides
 ///     inside the raw <c>TagConfig</c> JSON blob, round-trips with byte-parity through both
-///     equipment-tag producers: the live-edit composer (<see cref="Phase7Composer.Compose"/>) and the
+///     equipment-tag producers: the live-edit composer (<see cref="AddressSpaceComposer.Compose"/>) and the
 ///     artifact decoder (<see cref="DeploymentArtifact.ParseComposition(System.ReadOnlySpan{byte})"/>).
 ///     A secondary/follower node decoding a serialized deployment artifact MUST materialise array tags
 ///     identically to the primary, so the artifact side must derive <c>IsArray</c> / <c>ArrayLength</c>
@@ -153,7 +153,7 @@ public sealed class DeploymentArtifactArrayParityTests
         var namespaces = new[] { ns };
 
         // ---- Side 1: the live-edit composer ----
-        var composed = Phase7Composer.Compose(
+        var composed = AddressSpaceComposer.Compose(
             areas, lines, equipment, drivers, Array.Empty<ScriptedAlarm>(), tags, namespaces);
 
         // ---- Side 2: serialise the SAME draft to the artifact blob shape, then decode it ----

tests/Server/ZB.MOM.WW.OtOpcUa.Runtime.Tests/Drivers/DeploymentArtifactEquipTokenTests.cs

@@ -9,7 +9,7 @@ namespace ZB.MOM.WW.OtOpcUa.Runtime.Tests.Drivers;
 ///     Verifies the artifact-decode mirror substitutes the reserved <c>{{equip}}</c> token in a
 ///     VirtualTag script's <c>ctx.GetTag("…")</c> literals with the owning equipment's tag base
 ///     (derived from its child Equipment-namespace tag's FullName) — byte-parity with
-///     <c>Phase7Composer.Compose</c>'s live-edit path, using the same shared
+///     <c>AddressSpaceComposer.Compose</c>'s live-edit path, using the same shared
 ///     <c>EquipmentScriptPaths</c> helper and the same equipmentTags-derived base.
 /// </summary>
 public sealed class DeploymentArtifactEquipTokenTests

tests/Server/ZB.MOM.WW.OtOpcUa.Runtime.Tests/Drivers/DeploymentArtifactHistorizeParityTests.cs

@@ -12,7 +12,7 @@ namespace ZB.MOM.WW.OtOpcUa.Runtime.Tests.Drivers;
 /// <summary>
 ///     Proves the Phase C HistoryRead intent (<c>isHistorized</c> + optional <c>historianTagname</c>),
 ///     which rides inside the raw <c>TagConfig</c> JSON blob, round-trips with byte-parity through both
-///     equipment-tag producers: the live-edit composer (<see cref="Phase7Composer.Compose"/>) and the
+///     equipment-tag producers: the live-edit composer (<see cref="AddressSpaceComposer.Compose"/>) and the
 ///     artifact decoder (<see cref="DeploymentArtifact.ParseComposition(System.ReadOnlySpan{byte})"/>).
 ///     The artifact serializer re-parses the SAME <c>TagConfig</c> string both sides emit, so no
 ///     ConfigComposer change is needed — the flags are already carried in the blob.
@@ -120,7 +120,7 @@ public sealed class DeploymentArtifactHistorizeParityTests
         var namespaces = new[] { ns };
 
         // ---- Side 1: the live-edit composer ----
-        var composed = Phase7Composer.Compose(
+        var composed = AddressSpaceComposer.Compose(
             areas, lines, equipment, drivers, Array.Empty<ScriptedAlarm>(), tags, namespaces);
 
         // ---- Side 2: serialise the SAME draft to the artifact blob shape, then decode it ----

tests/Server/ZB.MOM.WW.OtOpcUa.Runtime.Tests/Drivers/DeploymentArtifactScriptedAlarmParityTests.cs

@@ -11,7 +11,7 @@ namespace ZB.MOM.WW.OtOpcUa.Runtime.Tests.Drivers;
 /// <summary>
 ///     Byte-parity tests for the scripted-alarm deployment-artifact decode path
 ///     (<c>DeploymentArtifact.BuildEquipmentScriptedAlarmPlans</c>) against the live compose seam
-///     (<c>Phase7Composer.Compose</c>). Both sides derive <c>EquipmentScriptedAlarmPlan</c> from the
+///     (<c>AddressSpaceComposer.Compose</c>). Both sides derive <c>EquipmentScriptedAlarmPlan</c> from the
 ///     same ScriptedAlarm + Script data via the shared <c>EquipmentScriptPaths.ExtractAlarmDependencyRefs</c>
 ///     helper, so the decoded plans must equal the composer's element-wise (the record has value
 ///     equality including DependencyRefs order). Mirrors the existing EquipmentVirtualTags parity
@@ -70,7 +70,7 @@ public sealed class DeploymentArtifactScriptedAlarmParityTests
             Enabled = false,
         };
 
-        var composed = Phase7Composer.Compose(
+        var composed = AddressSpaceComposer.Compose(
             Array.Empty<UnsArea>(), Array.Empty<UnsLine>(), Array.Empty<Equipment>(),
             Array.Empty<DriverInstance>(), new[] { alarm1, alarm2 },
             Array.Empty<Tag>(), Array.Empty<Namespace>(),
@@ -189,7 +189,7 @@ public sealed class DeploymentArtifactScriptedAlarmParityTests
             Enabled = true,
         };
 
-        var composed = Phase7Composer.Compose(
+        var composed = AddressSpaceComposer.Compose(
             Array.Empty<UnsArea>(), Array.Empty<UnsLine>(), Array.Empty<Equipment>(),
             Array.Empty<DriverInstance>(), new[] { goodAlarm, orphanAlarm },
             Array.Empty<Tag>(), Array.Empty<Namespace>(),

tests/Server/ZB.MOM.WW.OtOpcUa.Runtime.Tests/Drivers/DeploymentArtifactTests.cs

@@ -257,7 +257,7 @@ public sealed class DeploymentArtifactTests
     ///     Verifies ParseComposition surfaces Equipment-namespace VirtualTags (joined to their Script
     ///     by ScriptId for the expression source) as <c>EquipmentVirtualTags</c>, with the
     ///     <c>DependencyRefs</c> extracted from the script's <c>ctx.GetTag("…")</c> literals — the
-    ///     artifact-decode mirror of <c>Phase7Composer.Compose</c>'s VirtualTag producer.
+    ///     artifact-decode mirror of <c>AddressSpaceComposer.Compose</c>'s VirtualTag producer.
     /// </summary>
     [Fact]
     public void ParseComposition_reads_EquipmentVirtualTags_from_virtualtags_and_scripts()

tests/Server/ZB.MOM.WW.OtOpcUa.Runtime.Tests/Drivers/DeploymentArtifactVirtualTagHistorizeParityTests.cs

@@ -12,7 +12,7 @@ namespace ZB.MOM.WW.OtOpcUa.Runtime.Tests.Drivers;
 /// <summary>
 ///     Byte-parity tests for the VirtualTag <c>Historize</c> flag across the artifact-decode path
 ///     (<c>DeploymentArtifact.BuildEquipmentVirtualTagPlans</c>) and the live compose seam
-///     (<c>Phase7Composer.Compose</c>) — H5b. The artifact JSON already carries a Pascal-case
+///     (<c>AddressSpaceComposer.Compose</c>) — H5b. The artifact JSON already carries a Pascal-case
 ///     <c>"Historize"</c> bool (ConfigComposer serialises the whole VirtualTag entity with
 ///     <c>DefaultIgnoreCondition.Never</c>); the decode just had to read it. Both sides default to
 ///     <c>false</c> when the flag is unset/absent/non-bool, so the decoded plans must equal the
@@ -65,7 +65,7 @@ public sealed class DeploymentArtifactVirtualTagHistorizeParityTests
         var vtHist = new VirtualTag { VirtualTagId = "vt-hist", EquipmentId = "eq-1", Name = "Historized", DataType = "Int32", ScriptId = "s-1", Historize = true };
         var vtPlain = new VirtualTag { VirtualTagId = "vt-plain", EquipmentId = "eq-1", Name = "Plain", DataType = "Int32", ScriptId = "s-1", Historize = false };
 
-        var composed = Phase7Composer.Compose(
+        var composed = AddressSpaceComposer.Compose(
             new[] { area }, new[] { line }, new[] { equip },
             new[] { driver }, Array.Empty<ScriptedAlarm>(),
             new[] { tag }, new[] { ns },

tests/Server/ZB.MOM.WW.OtOpcUa.Runtime.Tests/OpcUa/OpcUaPublishActorRebuildTests.cs

@@ -24,7 +24,7 @@ public sealed class OpcUaPublishActorRebuildTests : RuntimeActorTestBase
     {
         var db = NewInMemoryDbFactory();
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         SeedDeployment(db, equipmentIds: new[] { "eq-1", "eq-2" }, driverIds: new[] { "drv-1" });
 
@@ -49,7 +49,7 @@ public sealed class OpcUaPublishActorRebuildTests : RuntimeActorTestBase
     {
         var db = NewInMemoryDbFactory();
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
 
         // No deployment seeded — LoadLatestArtifact returns empty blob.
         var actor = Sys.ActorOf(OpcUaPublishActor.PropsForTests(
@@ -69,7 +69,7 @@ public sealed class OpcUaPublishActorRebuildTests : RuntimeActorTestBase
     {
         var db = NewInMemoryDbFactory();
         var sink = new RecordingSink();
-        var applier = new Phase7Applier(sink, NullLogger<Phase7Applier>.Instance);
+        var applier = new AddressSpaceApplier(sink, NullLogger<AddressSpaceApplier>.Instance);
         SeedDeployment(db, equipmentIds: new[] { "eq-1" }, driverIds: Array.Empty<string>());
 
         var actor = Sys.ActorOf(OpcUaPublishActor.PropsForTests(
@@ -114,7 +114,7 @@ public sealed class OpcUaPublishActorRebuildTests : RuntimeActorTestBase
         // --- SITE-A node: only the SITE-A tag's variable, never MAIN's. ---
         var dbA = NewInMemoryDbFactory();
         var sinkA = new RecordingSink();
-        var applierA = new Phase7Applier(sinkA, NullLogger<Phase7Applier>.Instance);
+        var applierA = new AddressSpaceApplier(sinkA, NullLogger<AddressSpaceApplier>.Instance);
         SeedMultiClusterDeployment(dbA);
 
         var siteActor = Sys.ActorOf(OpcUaPublishActor.PropsForTests(
@@ -134,7 +134,7 @@ public sealed class OpcUaPublishActorRebuildTests : RuntimeActorTestBase
         // --- MAIN node: the mirror — only MAIN's tag's variable, never SITE-A's. ---
         var dbM = NewInMemoryDbFactory();
         var sinkM = new RecordingSink();
-        var applierM = new Phase7Applier(sinkM, NullLogger<Phase7Applier>.Instance);
+        var applierM = new AddressSpaceApplier(sinkM, NullLogger<AddressSpaceApplier>.Instance);
         SeedMultiClusterDeployment(dbM);
 
         var mainActor = Sys.ActorOf(OpcUaPublishActor.PropsForTests(