Upgraded to MudBlazor 9 (#1137)

app/MindWork AI Studio/Assistants/VisualBriefing/VisualBriefingAssistant.razor.Projects.cs

@@ -37,7 +37,7 @@ public partial class VisualBriefingAssistant
         if (selected is not null)
             await this.ApplySelectedProjectAsync(selected);
         else
-            this.ClearSelectedProject();
+            await this.ClearSelectedProjectAsync();
     }
 
     /// <summary>
@@ -150,7 +150,7 @@ public partial class VisualBriefingAssistant
         this.BuildOrchestrator.ForgetBriefing(id);
         this.BuildProgressService.Forget(id);
 
-        this.ClearSelectedProject();
+        await this.ClearSelectedProjectAsync();
 
         await this.ReloadListAsync();
     }
@@ -296,14 +296,14 @@ public partial class VisualBriefingAssistant
         }
 
         await this.Store.RememberSelectionAsync(project.BriefingId);
-        this.ClearSelectedProject();
+        await this.ClearSelectedProjectAsync();
         this.selectedProject = project;
     }
 
     /// <summary>
     /// Clears editor-only state so an unavailable project cannot trigger saves or background work.
     /// </summary>
-    private void ClearSelectedProject()
+    private async Task ClearSelectedProjectAsync()
     {
         this.selectedProject = null;
         this.selectedBriefing = null;
@@ -316,7 +316,8 @@ public partial class VisualBriefingAssistant
         this.lastPersistedState = string.Empty;
         this.formIssues = [];
         this.formValidationPending = false;
-        this.visualBriefingForm?.ResetValidation();
+        if (this.visualBriefingForm is not null)
+            await this.visualBriefingForm.ResetValidationAsync();
     }
 
     /// <summary>