Added the visual briefing assistant (#893)

app/MindWork AI Studio/Assistants/AssistantBase.razor.cs

@@ -24,10 +24,7 @@ public abstract partial class AssistantBase<TSettings> : AssistantLowerBase wher
     
     [Inject]
     protected IJSRuntime JsRuntime { get; init; } = null!;
-    
-    [Inject]
-    protected ISnackbar Snackbar { get; init; } = null!;
-    
+
     [Inject]
     protected RustService RustService { get; init; } = null!;
     
@@ -529,7 +526,7 @@ public abstract partial class AssistantBase<TSettings> : AssistantLowerBase wher
     
     protected async Task CopyToClipboard()
     {
-        await this.RustService.CopyText2Clipboard(this.Snackbar, this.Result2Copy());
+        await this.RustService.CopyText2Clipboard(this.Result2Copy());
     }
 
     private ChatThread CreateSendToChatThread()
@@ -606,14 +603,17 @@ public abstract partial class AssistantBase<TSettings> : AssistantLowerBase wher
         };
 
         var sendToData = destination.GetData();
-        if (destination is not Tools.Components.CHAT && this.AssistantSessionService.GetSnapshots().Any(snapshot => snapshot.IsActive && snapshot.Key.Component == destination))
+        if (destination.HasSingleSessionSlot() && this.AssistantSessionService.GetSnapshots().Any(snapshot => snapshot.IsActive && snapshot.Key.Component == destination))
         {
             await this.MessageBus.SendWarning(new(Icons.Material.Filled.Apps, this.TB("This assistant is already running. AI Studio opens the running session instead.")));
             this.NavigationManager.NavigateTo(sendToData.Route);
             return;
         }
 
-        if (destination is not Tools.Components.CHAT)
+        // Only components with a single session slot may be cleared as a group. The visual briefing
+        // assistant keys its sessions per briefing, so clearing by component would discard the
+        // status of every stored briefing instead of the one we are about to open.
+        if (destination.HasSingleSessionSlot())
             await this.AssistantSessionService.ClearInactiveSessionsForComponentAsync(destination);
 
         switch (destination)
@@ -642,7 +642,10 @@ public abstract partial class AssistantBase<TSettings> : AssistantLowerBase wher
         if (!component.AllowSendTo())
             return false;
 
-        return this.SettingsManager.IsAssistantVisible(component, withLogging: false);
+        return this.SettingsManager.IsAssistantVisible(
+            component,
+            withLogging: false,
+            requiredPreviewFeature: component.RequiredPreviewFeature());
     }
     
     private async Task InnerResetForm()