Generated the JSON contracts of providers, the runtime, and services at compile time (#1150)

app/MindWork AI Studio/Tools/Services/RustContentStreamJsonContext.cs

@@ -0,0 +1,24 @@
+using System.Text.Json.Serialization;
+
+namespace AIStudio.Tools.Services;
+
+/// <summary>
+/// The contracts with which System.Text.Json reads the events of a file extraction from the runtime, built at
+/// compile time.
+/// </summary>
+/// <remarks>
+/// A converter reads the metadata of an event as the type its JSON tells, so each of these types needs a
+/// contract of its own here. A test fails for one which is missing.
+/// </remarks>
+[JsonSourceGenerationOptions(GenerationMode = JsonSourceGenerationMode.Metadata)]
+[JsonSerializable(typeof(ContentStreamSseEvent))]
+[JsonSerializable(typeof(string))]
+[JsonSerializable(typeof(ContentStreamTextMetadata))]
+[JsonSerializable(typeof(ContentStreamPdfMetadata))]
+[JsonSerializable(typeof(ContentStreamSpreadsheetMetadata))]
+[JsonSerializable(typeof(ContentStreamPresentationMetadata))]
+[JsonSerializable(typeof(ContentStreamImageMetadata))]
+[JsonSerializable(typeof(ContentStreamDocumentMetadata))]
+[JsonSerializable(typeof(ContentStreamErrorMetadata))]
+[JsonSerializable(typeof(ContentStreamPromptInjectionMetadata))]
+internal sealed partial class RustContentStreamJsonContext : JsonSerializerContext;