Added the visual briefing assistant (#893)

app/MindWork AI Studio/Components/AssistantBlock.razor.cs

@@ -103,11 +103,29 @@ public partial class AssistantBlock<TSettings> : MSGComponentBase where TSetting
 
     private MediaImportOwner CurrentMediaImportOwner => MediaImportOwner.ForAssistant(new AssistantSessionKey(this.Component, this.AssistantSessionInstanceId));
 
-    private MediaImportSnapshot? MediaImportSnapshot => string.IsNullOrWhiteSpace(this.AssistantSessionInstanceId)
-        ? this.MediaTranscriptionService.GetSnapshots().FirstOrDefault(snapshot =>
-            snapshot.Owner.Kind is MediaImportOwnerKind.ASSISTANT
-            && snapshot.Owner.Id.StartsWith($"{this.Component}:", StringComparison.Ordinal))
-        : this.MediaTranscriptionService.GetSnapshot(this.CurrentMediaImportOwner);
+    private MediaImportSnapshot? MediaImportSnapshot => this.MediaTranscriptionService.GetSnapshots()
+        .FirstOrDefault(snapshot => this.OwnedByThisBlock(snapshot.Owner));
+
+    /// <summary>
+    /// Gets whether a media-import owner belongs to the assistant represented by this block.
+    /// </summary>
+    /// <remarks>
+    /// Owners that persist their own sources are keyed by the stored document rather than by an
+    /// assistant session, so this block aggregates all of them for its component. Without a session
+    /// instance we aggregate every owner of the component, otherwise we match the exact owner.
+    /// </remarks>
+    /// <param name="owner">The media-import owner to test.</param>
+    /// <returns><c>true</c> when this block represents the owner.</returns>
+    private bool OwnedByThisBlock(MediaImportOwner owner)
+    {
+        if (owner.Kind.PersistsOwnSources())
+            return owner.Kind == this.Component.MediaOwnerKind();
+
+        if (string.IsNullOrWhiteSpace(this.AssistantSessionInstanceId))
+            return owner.Kind is MediaImportOwnerKind.ASSISTANT && owner.Id.StartsWith($"{this.Component}:", StringComparison.Ordinal);
+
+        return owner == this.CurrentMediaImportOwner;
+    }
 
     /// <summary>
     /// Gets the assistant session indicator shown on top of the assistant icon.
@@ -140,11 +158,7 @@ public partial class AssistantBlock<TSettings> : MSGComponentBase where TSetting
 
     private void OnMediaImportStateChanged(MediaImportOwner owner)
     {
-        var matches = string.IsNullOrWhiteSpace(this.AssistantSessionInstanceId)
-            ? owner.Kind is MediaImportOwnerKind.ASSISTANT && owner.Id.StartsWith($"{this.Component}:", StringComparison.Ordinal)
-            : owner == this.CurrentMediaImportOwner;
-        
-        if (matches)
+        if (this.OwnedByThisBlock(owner))
             _ = this.InvokeAsync(this.StateHasChanged);
     }