chore(uns): create-redirect null guard + alarm isolation test + alarm-authoring doc (final review)

docs/ScriptedAlarms.md

@@ -4,6 +4,10 @@
 
 This file covers the engine internals — predicate evaluation, state machine, persistence, and the engine-to-`IAlarmSource` adapter. The server-side plumbing that turns those emissions into OPC UA `AlarmConditionState` nodes, applies retries, persists alarm transitions to the Historian, and routes operator acks through the session's `AlarmAck` permission lives in [AlarmTracking.md](AlarmTracking.md) and is not repeated here.
 
+## Authoring (AdminUI)
+
+Scripted-alarm definitions are created and edited per-equipment on the **`/uns/equipment/{id}`** page's **Alarms** tab; the standalone `/scripted-alarms` management pages were retired in favour of this equipment-scoped surface. The **`/alerts`** page remains the live runtime view — it is where operators acknowledge, confirm, and shelve active alarm instances.
+
 ## Definition shape
 
 `ScriptedAlarmDefinition` (`src/Core/ZB.MOM.WW.OtOpcUa.Core.ScriptedAlarms/ScriptedAlarmDefinition.cs`) is the runtime contract the engine consumes. The generation-publish path materialises these from the `ScriptedAlarm` + `Script` config tables via `Phase7Composer.Compose` + the driver-role host actor startup path.

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Uns/EquipmentPage.razor

@@ -559,6 +559,7 @@ else
             if (IsNew)
             {
                 // Redirect to the persisted editor so the other tabs (disabled while new) become available.
+                if (string.IsNullOrEmpty(result.CreatedId)) { _error = "Equipment was created but no id was returned."; return; }
                 Nav.NavigateTo($"/uns/equipment/{result.CreatedId}");
             }
             else

tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/UnsTreeServiceScriptedAlarmTests.cs

@@ -86,4 +86,17 @@ public sealed class UnsTreeServiceScriptedAlarmTests
         dup.Error.ShouldNotBeNull();
         dup.Error!.ShouldContain("already exists");
     }
+
+    [Fact]
+    public async Task LoadAlarmsForEquipment_excludes_other_equipment()
+    {
+        var svc = SeededService();
+        await svc.CreateScriptedAlarmAsync(UnsTreeTestDb.SeededEquipmentId, Sample("SA-MINE"));
+        await svc.CreateScriptedAlarmAsync("EQ-OTHER", Sample("SA-OTHER") with { Name = "Other-alarm" });
+
+        var rows = await svc.LoadAlarmsForEquipmentAsync(UnsTreeTestDb.SeededEquipmentId);
+
+        rows.Count.ShouldBe(1);
+        rows[0].ScriptedAlarmId.ShouldBe("SA-MINE");
+    }
 }