Added configuration plugin options for default chat data sources (#833)

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

@@ -29,7 +29,7 @@ public sealed class DataChat(Expression<Func<Data, DataChat>>? configSelection =
     /// <summary>
     /// Defines the data source behavior when sending assistant results to a chat.
     /// </summary>
-    public SendToChatDataSourceBehavior SendToChatDataSourceBehavior { get; set; } = SendToChatDataSourceBehavior.NO_DATA_SOURCES;
+    public SendToChatDataSourceBehavior SendToChatDataSourceBehavior { get; set; } = ManagedConfiguration.Register(configSelection, n => n.SendToChatDataSourceBehavior, SendToChatDataSourceBehavior.NO_DATA_SOURCES);
 
     /// <summary>
     /// Preselect any chat options?
@@ -51,10 +51,47 @@ public sealed class DataChat(Expression<Func<Data, DataChat>>? configSelection =
     /// </summary>
     public string PreselectedChatTemplate { get; set; } = ManagedConfiguration.Register(configSelection, n => n.PreselectedChatTemplate, string.Empty);
     
+    /// <summary>
+    /// Whether data sources are disabled by default for new chats.
+    /// </summary>
+    public bool PreselectedDataSourcesDisabled { get; set; } = ManagedConfiguration.Register(configSelection, n => n.PreselectedDataSourcesDisabled, true);
+
+    /// <summary>
+    /// Whether data sources should be selected automatically by default for new chats.
+    /// </summary>
+    public bool PreselectedDataSourcesAutomaticSelection { get; set; } = ManagedConfiguration.Register(configSelection, n => n.PreselectedDataSourcesAutomaticSelection, false);
+
+    /// <summary>
+    /// Whether retrieved data should be validated automatically by default for new chats.
+    /// </summary>
+    public bool PreselectedDataSourcesAutomaticValidation { get; set; } = ManagedConfiguration.Register(configSelection, n => n.PreselectedDataSourcesAutomaticValidation, false);
+
+    /// <summary>
+    /// The data source IDs that should be preselected by default for new chats.
+    /// </summary>
+    public List<string> PreselectedDataSourceIds { get; set; } = ManagedConfiguration.Register(configSelection, n => n.PreselectedDataSourceIds, []);
+
     /// <summary>
     /// Should we preselect data sources options for a created chat?
     /// </summary>
-    public DataSourceOptions PreselectedDataSourceOptions { get; set; } = new();
+    // Compatibility shim: legacy settings used this nested object. See documentation/compatibility-shims/2026-07-chat-data-source-options.md; remove after 2027-01-05.
+    public DataSourceOptions PreselectedDataSourceOptions
+    {
+        get => new()
+        {
+            DisableDataSources = this.PreselectedDataSourcesDisabled,
+            AutomaticDataSourceSelection = this.PreselectedDataSourcesAutomaticSelection,
+            AutomaticValidation = this.PreselectedDataSourcesAutomaticValidation,
+            PreselectedDataSourceIds = [..this.PreselectedDataSourceIds],
+        };
+        set
+        {
+            this.PreselectedDataSourcesDisabled = value.DisableDataSources;
+            this.PreselectedDataSourcesAutomaticSelection = value.AutomaticDataSourceSelection;
+            this.PreselectedDataSourcesAutomaticValidation = value.AutomaticValidation;
+            this.PreselectedDataSourceIds = [..value.PreselectedDataSourceIds];
+        }
+    }
 
     /// <summary>
     /// Should we show the latest message after loading? When false, we show the first (aka oldest) message.