fix(raw): tag edit modal feeds the picker the merged device config, not '{}' (#468 follow-up)

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Shared/Raw/RawTagModal.razor

@@ -3,7 +3,8 @@
    passed in and drives the typed TagConfig editor dispatch (TagConfigEditorMap; raw-JSON fallback for
    unmapped drivers, e.g. Galaxy). Edit-only: the host opens it for an existing tree node (TagId), it
    loads via LoadTagForEditAsync, and saves via UpdateTagAsync. Visibility is @bind-Visible; a successful
-   save raises OnSaved so the coordinator can refresh the tree. *@
+   save raises OnSaved so the coordinator can refresh the tree. The editor also receives the merged
+   Driver+Device probe config, which is what its address picker dials when browsing the live device. *@
 @using System.ComponentModel.DataAnnotations
 @using Microsoft.AspNetCore.Components.Forms
 @using ZB.MOM.WW.OtOpcUa.AdminUI.Uns
@@ -140,11 +141,17 @@
     // reload + clobber in-progress edits. Null while closed.
     private string? _loadedKey;
 
+    // Merged Driver+Device config for the typed editor's address picker — the same blob Test-connect and
+    // RawBrowseModal dial, resolved once per open. Null (→ "{}") when the resolve failed: the picker's
+    // browse then degrades to its graceful error chip.
+    private string? _mergedConfigJson;
+
     protected override async Task OnParametersSetAsync()
     {
         if (!Visible)
         {
             _loadedKey = null;   // closed → next open reloads fresh
+            _mergedConfigJson = null;
             return;
         }
 
@@ -180,14 +187,31 @@
             TagConfig = string.IsNullOrWhiteSpace(d.TagConfig) ? "{}" : d.TagConfig,
         };
         _rowVersion = d.RowVersion;
+
+        _mergedConfigJson = null;
+        try
+        {
+            var merged = await Svc.LoadMergedProbeConfigAsync(d.DeviceId);
+            if (merged is { } m)
+            {
+                _mergedConfigJson = m.MergedConfigJson;
+            }
+        }
+        catch
+        {
+            // Fail-soft: the modal must open and save regardless of the probe-config resolve. Only the
+            // browse affordance degrades, and it reports its own error when used.
+        }
     }
 
-    private IDictionary<string, object> BuildEditorParameters() => new Dictionary<string, object>
+    /// <summary>Parameters handed to the typed TagConfig editor. Internal so tests can assert them.</summary>
+    internal IDictionary<string, object> BuildEditorParameters() => new Dictionary<string, object>
     {
         ["ConfigJson"] = _form.TagConfig,
         ["ConfigJsonChanged"] = EventCallback.Factory.Create<string>(this, v => _form.TagConfig = v),
         ["DriverType"] = DriverType ?? "",
-        ["GetDriverConfigJson"] = (Func<string>)(() => "{}"),
+        // Live accessor, not a snapshot: the picker reads it when the operator clicks Browse.
+        ["GetDriverConfigJson"] = (Func<string>)(() => _mergedConfigJson ?? "{}"),
     };
 
     private async Task SaveAsync()