feat(m9/T31): Monaco JSON-schema hover/completion on value-entry surface

src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Shared/MonacoEditor.razor

@@ -28,6 +28,16 @@
     [Parameter] public bool ReadOnly { get; set; } = false;
     [Parameter] public bool ShowToolbar { get; set; } = true;
 
+    /// <summary>
+    /// Optional JSON Schema (the resolved schema text — any
+    /// <c>{"$ref":"lib:Name"}</c> already inlined) applied to this editor's
+    /// model when <see cref="Language"/> is <c>json</c>. Wires Monaco's
+    /// built-in JSON language so the editor offers schema-driven hover,
+    /// completion, and diagnostics on the entered JSON. Ignored for non-JSON
+    /// languages. Updating it re-applies the schema to the live model.
+    /// </summary>
+    [Parameter] public string? JsonSchema { get; set; }
+
     /// <summary>
     /// Runtime globals surface the script is analyzed against. Defaults to
     /// template/shared-script globals; set to <c>InboundApi</c> on the API
@@ -87,6 +97,7 @@
     private DotNetObjectReference<MonacoEditor>? _dotNetRef;
     private readonly string _id = Guid.NewGuid().ToString("N");
     private string _lastSentValue = "";
+    private string? _lastSentSchema;
     private bool _initialized;
     private bool _wrap;
     private bool _minimap;
@@ -108,10 +119,12 @@
                     {
                         value = Value ?? "",
                         language = Language,
-                        readOnly = ReadOnly
+                        readOnly = ReadOnly,
+                        jsonSchema = JsonSchema
                     },
                     _dotNetRef);
                 _initialized = true;
+                _lastSentSchema = JsonSchema;
             }
             catch (InvalidOperationException)
             {
@@ -128,10 +141,18 @@
                 Logger.LogError(ex, "Monaco editor {EditorId} failed to initialize.", _id);
             }
         }
-        else if (_initialized && (Value ?? "") != _lastSentValue)
+        else if (_initialized)
         {
-            _lastSentValue = Value ?? "";
-            await SafeInvokeAsync("MonacoBlazor.setValue", "set editor value", _id, _lastSentValue);
+            if ((Value ?? "") != _lastSentValue)
+            {
+                _lastSentValue = Value ?? "";
+                await SafeInvokeAsync("MonacoBlazor.setValue", "set editor value", _id, _lastSentValue);
+            }
+            if (JsonSchema != _lastSentSchema)
+            {
+                _lastSentSchema = JsonSchema;
+                await SafeInvokeAsync("MonacoBlazor.setJsonSchema", "set JSON schema", _id, JsonSchema);
+            }
         }
     }