Added the visual briefing assistant (#893)

app/MindWork AI Studio/Assistants/VisualBriefing/VisualBriefingComponentTexts.cs

@@ -0,0 +1,34 @@
+namespace AIStudio.Assistants.VisualBriefing;
+
+/// <summary>
+/// Derives assistive component text requirements from the planned component kinds.
+/// </summary>
+internal static class VisualBriefingComponentTexts
+{
+    /// <summary>
+    /// Determines whether a component requires an assistive description from the content model.
+    /// </summary>
+    /// <param name="kind">The planned component kind.</param>
+    /// <returns>Whether an accessibility text is required.</returns>
+    private static bool RequiresAccessibilityText(VisualBriefingComponentKind kind) =>
+        kind is VisualBriefingComponentKind.CHART or
+            VisualBriefingComponentKind.SIMULATION or
+            VisualBriefingComponentKind.FILTERABLE_TABLE;
+
+    /// <summary>
+    /// Determines whether a component inherits its assistive description from evidence.
+    /// </summary>
+    /// <param name="kind">The planned component kind.</param>
+    /// <returns>Whether AI Studio supplies the accessibility text.</returns>
+    internal static bool InheritsAccessibilityText(VisualBriefingComponentKind kind) => kind is VisualBriefingComponentKind.ASSET;
+
+    /// <summary>
+    /// Lists component identifiers requiring model-supplied accessibility texts.
+    /// </summary>
+    /// <param name="components">The planned components.</param>
+    /// <returns>The component identifiers in plan order.</returns>
+    internal static string[] AccessibilityTextKeys(IEnumerable<VisualBriefingPlanComponent> components) =>
+    [
+        .. components.Where(component => RequiresAccessibilityText(component.Kind)).Select(component => component.ComponentId)
+    ];
+}