refactor(mesh-phase4): retire EfAlarmConditionStateStore + drop dead ScriptedAlarmState table (Task 9)

Scripted-alarm condition state lives in LocalDb (Phase 4); the ConfigDb-backed
Ef store + ScriptedAlarmState table are now dead. Removes the test-harness Ef
fallback (a DB-backed node with no store now skips the alarm host), deletes the
store + entity + model config, and drops the table via migration.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW

tests/Core/ZB.MOM.WW.OtOpcUa.Configuration.Tests/ScriptingEntitiesTests.cs

@@ -10,9 +10,9 @@ namespace ZB.MOM.WW.OtOpcUa.Configuration.Tests;
 
 /// <summary>
 ///     Verifies the Phase 7 Stream E entities (<see cref="Script"/>, <see cref="VirtualTag"/>,
-///     <see cref="ScriptedAlarm"/>, <see cref="ScriptedAlarmState"/>) register correctly in
-///     the EF model, map to the expected tables/columns/indexes, and carry the check constraints
-///     the plan decisions call for. Introspection only — no SQL Server required.
+///     <see cref="ScriptedAlarm"/>) register correctly in the EF model, map to the expected
+///     tables/columns/indexes, and carry the check constraints the plan decisions call for.
+///     Introspection only — no SQL Server required.
 /// </summary>
 [Trait("Category", "Unit")]
 public sealed class ScriptingEntitiesTests
@@ -127,49 +127,9 @@ public sealed class ScriptingEntitiesTests
         alarm.Enabled.ShouldBeTrue();
     }
 
-    /// <summary>Verifies that ScriptedAlarmState is keyed on ScriptedAlarmId and not generation-scoped.</summary>
-    [Fact]
-    public void ScriptedAlarmState_keyed_on_ScriptedAlarmId_not_generation_scoped()
-    {
-        using var ctx = BuildCtx();
-        var entity = ctx.Model.FindEntityType(typeof(ScriptedAlarmState)).ShouldNotBeNull();
-        entity.GetTableName().ShouldBe("ScriptedAlarmState");
-
-        var pk = entity.FindPrimaryKey().ShouldNotBeNull();
-        pk.Properties.Count.ShouldBe(1);
-        pk.Properties[0].Name.ShouldBe(nameof(ScriptedAlarmState.ScriptedAlarmId));
-
-        // State is NOT generation-scoped — GenerationId column should not exist per plan decision #14.
-        entity.FindProperty("GenerationId").ShouldBeNull(
-            "ack state follows alarm identity across generations");
-    }
-
-    /// <summary>Verifies that ScriptedAlarmState default values match Part 9 initial states.</summary>
-    [Fact]
-    public void ScriptedAlarmState_default_state_values_match_Part9_initial_states()
-    {
-        var state = new ScriptedAlarmState
-        {
-            ScriptedAlarmId = "a1",
-            EnabledState = "Enabled",
-            AckedState = "Unacknowledged",
-            ConfirmedState = "Unconfirmed",
-            ShelvingState = "Unshelved",
-        };
-        state.CommentsJson.ShouldBe("[]");
-        state.LastAckUser.ShouldBeNull();
-        state.LastAckUtc.ShouldBeNull();
-    }
-
-    /// <summary>Verifies that ScriptedAlarmState has a JSON check constraint on CommentsJson.</summary>
-    [Fact]
-    public void ScriptedAlarmState_has_JSON_check_constraint_on_CommentsJson()
-    {
-        using var ctx = BuildCtx();
-        var entity = DesignModel(ctx).FindEntityType(typeof(ScriptedAlarmState)).ShouldNotBeNull();
-        var checks = entity.GetCheckConstraints().Select(c => c.Name).ToArray();
-        checks.ShouldContain("CK_ScriptedAlarmState_CommentsJson_IsJson");
-    }
+    // The ConfigDb-backed ScriptedAlarmState entity + table were retired in per-cluster mesh Phase 4
+    // (Task 9): scripted-alarm condition state lives in the replicated LocalDb store. The entity-model
+    // tests that covered it are gone with it.
 
     /// <summary>Verifies that all new Phase 7 entities are exposed via DbSet properties.</summary>
     [Fact]
@@ -179,7 +139,6 @@ public sealed class ScriptingEntitiesTests
         ctx.Scripts.ShouldNotBeNull();
         ctx.VirtualTags.ShouldNotBeNull();
         ctx.ScriptedAlarms.ShouldNotBeNull();
-        ctx.ScriptedAlarmStates.ShouldNotBeNull();
     }
 
     /// <summary>Verifies that the squashed V3Initial migration exists in the assembly.</summary>