Generated the JSON contracts of visual briefings and model answers at compile time (#1151)

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

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+using System.Text.Json;
+
+namespace AIStudio.Assistants.VisualBriefing;
+
+/// <summary>
+/// The data of a content artifact, as the content stage keeps it along with the artifact.
+/// </summary>
+/// <param name="Slots">The content of each slot, by its ID.</param>
+/// <param name="Charts">The validated chart specifications.</param>
+/// <param name="Controls">The validated interaction controls.</param>
+/// <param name="Formulas">The validated formula specifications.</param>
+/// <param name="Accessibility">The text for people who cannot see a component, by the ID of the component.</param>
+/// <param name="SourceReferences">The sources of each component, by the ID of the component.</param>
+/// <param name="Labels">The fixed labels which the runtime of the briefing shows.</param>
+internal sealed record VisualBriefingContentData(
+    Dictionary<string, JsonElement> Slots,
+    List<VisualBriefingChartSpec> Charts,
+    List<VisualBriefingControlSpec> Controls,
+    List<VisualBriefingFormulaSpec> Formulas,
+    Dictionary<string, string> Accessibility,
+    Dictionary<string, List<string>> SourceReferences,
+    VisualBriefingLabels Labels)
+{
+    /// <summary>
+    /// Gathers the data of a content artifact.
+    /// </summary>
+    /// <param name="artifact">The content artifact.</param>
+    /// <returns>The data of the artifact.</returns>
+    internal static VisualBriefingContentData Of(VisualBriefingContentArtifact artifact) => new(
+        artifact.Slots.ToDictionary(slot => slot.SlotId, slot => slot.Value, StringComparer.Ordinal),
+        artifact.Charts,
+        artifact.Controls,
+        artifact.Formulas,
+        artifact.AccessibilityTexts,
+        artifact.SourceReferences,
+        VisualBriefingLabels.Of(artifact.ResetLabel));
+}