Generated the JSON contracts of the stored data at compile time (#1148)

app/MindWork AI Studio/Settings/SettingsJsonContext.cs

@@ -0,0 +1,43 @@
+using System.Text.Json.Serialization;
+
+using AIStudio.Provider;
+using AIStudio.Settings.DataModel;
+using AIStudio.Settings.DataModel.PreviousModels;
+
+using EMailWritingStyles = AIStudio.Assistants.EMail.WritingStyles;
+using ERIContentType = AIStudio.Tools.ERIClient.DataModel.ContentType;
+using ProviderV4 = AIStudio.Settings.DataModel.PreviousModels.Provider;
+using RewriteImproveWritingStyles = AIStudio.Assistants.RewriteImprove.WritingStyles;
+
+namespace AIStudio.Settings;
+
+/// <summary>
+/// The contracts with which System.Text.Json reads and writes the settings, built at compile time.
+/// </summary>
+/// <remarks>
+/// Besides the settings and their older versions, which the migrations still read, the values of managed
+/// settings get written and read on their own, as the type of their setting. That type is often an interface,
+/// such as ISet&lt;string&gt;, which the settings themselves never use. A test fails for a managed setting
+/// whose type is missing here.<br/><br/>
+///
+/// Two types with the same name need a name of their own for their contract, else the generator builds
+/// only the first of them and warns with SYSLIB1031.
+/// </remarks>
+[JsonSourceGenerationOptions(GenerationMode = JsonSourceGenerationMode.Metadata)]
+[JsonSerializable(typeof(Data))]
+[JsonSerializable(typeof(DataV1V3))]
+[JsonSerializable(typeof(DataV4))]
+[JsonSerializable(typeof(DataV5))]
+[JsonSerializable(typeof(ISet<string>))]
+[JsonSerializable(typeof(ISet<PreviewFeatures>))]
+[JsonSerializable(typeof(ISet<LLMProviders>))]
+[JsonSerializable(typeof(ISet<ConfigurableAssistant>))]
+[JsonSerializable(typeof(IList<string>))]
+[JsonSerializable(typeof(IList<DataAssistantPluginEnterpriseApproval>))]
+[JsonSerializable(typeof(IDictionary<string, string>))]
+[JsonSerializable(typeof(ProviderV4), TypeInfoPropertyName = "ProviderV4")]
+[JsonSerializable(typeof(List<ProviderV4>), TypeInfoPropertyName = "ListProviderV4")]
+[JsonSerializable(typeof(EMailWritingStyles), TypeInfoPropertyName = "EMailWritingStyles")]
+[JsonSerializable(typeof(RewriteImproveWritingStyles), TypeInfoPropertyName = "RewriteImproveWritingStyles")]
+[JsonSerializable(typeof(ERIContentType), TypeInfoPropertyName = "ERIContentType")]
+internal sealed partial class SettingsJsonContext : JsonSerializerContext;