Add agenda assistant (#69)

app/MindWork AI Studio/Settings/DataModel/DataWorkspace.cs

@@ -0,0 +1,14 @@
+namespace AIStudio.Settings.DataModel;
+
+public sealed class DataWorkspace
+{
+    /// <summary>
+    /// The chat storage behavior.
+    /// </summary>
+    public WorkspaceStorageBehavior StorageBehavior { get; set; } = WorkspaceStorageBehavior.STORE_CHATS_AUTOMATICALLY;
+    
+    /// <summary>
+    /// The chat storage maintenance behavior.
+    /// </summary>
+    public WorkspaceStorageTemporaryMaintenancePolicy StorageTemporaryMaintenancePolicy { get; set; } = WorkspaceStorageTemporaryMaintenancePolicy.DELETE_OLDER_THAN_90_DAYS;
+}