Complete management API and CLI command parity

tests/ZB.MOM.WW.ScadaBridge.CentralUI.Tests/Shared/TreeViewStorageResilienceTests.cs

@@ -37,7 +37,7 @@ public class TreeViewStorageResilienceTests : BunitContext
         // A garbage payload that is not valid JSON for a List<string>.
         JSInterop.Setup<string?>("treeviewStorage.load", _ => true)
             .SetResult("{not json at all]");
-        JSInterop.SetupVoid("treeviewStorage.save", _ => true);
+        JSInterop.SetupVoid("treeviewStorage.save", _ => true).SetVoidResult();
 
         // Pre-fix: OnAfterRenderAsync threw JsonException out of the unguarded
         // Deserialize call. Post-fix: the corrupt payload is ignored.
@@ -53,7 +53,7 @@ public class TreeViewStorageResilienceTests : BunitContext
         // Valid JSON, but not a List<string> — an object, not an array.
         JSInterop.Setup<string?>("treeviewStorage.load", _ => true)
             .SetResult("{\"unexpected\": true}");
-        JSInterop.SetupVoid("treeviewStorage.save", _ => true);
+        JSInterop.SetupVoid("treeviewStorage.save", _ => true).SetVoidResult();
 
         var cut = BuildTree();