Improved the dialogs for local data sources and the Batch Processing assistant (#1096)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

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

@@ -0,0 +1,31 @@
+using Microsoft.AspNetCore.Components;
+
+namespace AIStudio.Components;
+
+/// <summary>
+/// A file-pattern field with shared, collapsible help and optional, always-visible exclusions.
+/// Callers supply their existing fields, preserving validation and managed-configuration locks.
+/// </summary>
+public partial class FilePatternSelection : MSGComponentBase
+{
+    /// <summary>
+    /// How many lines a field for file patterns or exclusions grows to. A longer list scrolls.
+    /// </summary>
+    public const int MAX_FIELD_LINES = 6;
+
+    [Parameter, EditorRequired]
+    public RenderFragment AllowedContent { get; set; } = null!;
+
+    /// <summary>
+    /// When supplied, shows the existing exclusion field below the inclusion field.
+    /// Both groups stay visible and use the same help control.
+    /// </summary>
+    [Parameter]
+    public RenderFragment? ExcludedContent { get; set; }
+
+    private bool HasExclusions => this.ExcludedContent is not null;
+
+    private bool showHelp;
+
+    private void ToggleHelp() => this.showHelp = !this.showHelp;
+}