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

app/MindWork AI Studio/Assistants/SWOTAnalysis/SwotAnalysisContentPresentation.cs

@@ -10,13 +10,22 @@ internal static class SwotAnalysisContentPresentation
     /// Fails the reading of stored data which holds a null where the result expects a value, so that
     /// the result view never meets one.
     /// </summary>
-    private static readonly JsonSerializerOptions JSON_OPTIONS = new()
+    internal static readonly JsonSerializerOptions JSON_OPTIONS = new JsonSerializerOptions
     {
         RespectNullableAnnotations = true,
-    };
+        TypeInfoResolver = SwotAnalysisJsonContext.Default,
+    }.AsReadOnly();
+
+    /// <summary>
+    /// Writes the analysis with the defaults of System.Text.Json, which let a null pass, unlike the reading.
+    /// </summary>
+    internal static readonly JsonSerializerOptions WRITE_OPTIONS = new JsonSerializerOptions
+    {
+        TypeInfoResolver = SwotAnalysisJsonContext.Default,
+    }.AsReadOnly();
 
     public static ContentPresentation Create(SwotAnalysisResult result) =>
-        ContentPresentation.Create(ContentPresentationKind.SWOT_ANALYSIS, result);
+        ContentPresentation.Create(ContentPresentationKind.SWOT_ANALYSIS, result, WRITE_OPTIONS);
 
     /// <summary>
     /// Reads the SWOT analysis stored as the presentation of a text, so it can be shown as a matrix.

app/MindWork AI Studio/Assistants/SWOTAnalysis/SwotAnalysisJsonContext.cs

@@ -0,0 +1,11 @@
+using System.Text.Json.Serialization;
+
+namespace AIStudio.Assistants.SWOTAnalysis;
+
+/// <summary>
+/// The contracts with which System.Text.Json reads and writes a SWOT analysis which a chat stores, built at
+/// compile time.
+/// </summary>
+[JsonSourceGenerationOptions(GenerationMode = JsonSourceGenerationMode.Metadata)]
+[JsonSerializable(typeof(SwotAnalysisResult))]
+internal sealed partial class SwotAnalysisJsonContext : JsonSerializerContext;