feat(mesh-phase4): LocalDb alarm-condition-state store (replicated, pair-local)

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

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

@@ -46,7 +46,7 @@ public sealed class LocalDbSetupTests : IDisposable
     }
 
     [Fact]
-    public void OnReady_RegistersExactlyTheThreeReplicatedTables()
+    public void OnReady_RegistersExactlyTheFourReplicatedTables()
     {
         // Both directions are load-bearing. "No fewer" catches a dropped RegisterReplicated call
         // (that table then never replicates). "No more" catches an accidental registration —
@@ -54,7 +54,7 @@ public sealed class LocalDbSetupTests : IDisposable
         var db = BuildDb();
 
         db.ReplicatedTables.Keys.OrderBy(k => k, StringComparer.Ordinal)
-            .ShouldBe(["alarm_sf_events", "deployment_artifacts", "deployment_pointer"]);
+            .ShouldBe(["alarm_condition_state", "alarm_sf_events", "deployment_artifacts", "deployment_pointer"]);
     }
 
     [Fact]
@@ -89,6 +89,16 @@ public sealed class LocalDbSetupTests : IDisposable
         db.ReplicatedTables["alarm_sf_events"].PkColumns.ShouldBe(["id"]);
     }
 
+    [Fact]
+    public void AlarmConditionState_PkIsTheScriptedAlarmId()
+    {
+        // One condition-state row per alarm identity. The pair's two nodes converge on the same row
+        // under LWW rather than each keeping its own, and Save is an unconditional upsert onto it.
+        var db = BuildDb();
+
+        db.ReplicatedTables["alarm_condition_state"].PkColumns.ShouldBe(["scripted_alarm_id"]);
+    }
+
     [Fact]
     public async Task AlarmSfEventRows_EnterTheOplog()
     {