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

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

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+using System.Text.Json;
+
+namespace AIStudio.Assistants.VisualBriefing;
+
+/// <summary>
+/// The data of a compiled briefing, which its template binds to.
+/// </summary>
+/// <param name="Slots">The content of each slot, by its ID.</param>
+/// <param name="Charts">The chart-library option object of each chart, by the ID of its component.</param>
+/// <param name="Interactions">The controls, their state, and the formulas of the briefing.</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 VisualBriefingCompiledData(
+    Dictionary<string, JsonElement> Slots,
+    Dictionary<string, JsonElement> Charts,
+    JsonElement Interactions,
+    Dictionary<string, string> Accessibility,
+    Dictionary<string, List<string>> SourceReferences,
+    VisualBriefingLabels Labels);