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

app/MindWork AI Studio/Chat/ChatThread.cs

@@ -23,7 +23,7 @@ public sealed record ChatThread
     /// <summary>
     /// The unique identifier of the chat thread.
     /// </summary>
-    public Guid ChatId { get; init; }
+    public Guid ChatId { get; set; }
     
     /// <summary>
     /// The unique identifier of the workspace.
@@ -42,16 +42,16 @@ public sealed record ChatThread
     /// Every copy of this thread made with a with expression shares the draft, because such a copy is
     /// still the same chat. A copy which becomes another chat needs a draft of its own.
     /// </remarks>
-    public ChatDraft Draft { get; init; } = new();
+    public ChatDraft Draft { get; set; } = new();
 
     // Compatibility shim: until v26.9.1, a chat stored only the transcripts of its draft, in a list of their own. See documentation/compatibility-shims/2026-10-chat-pending-media-transcripts.md; remove after 2027-04-11.
     [JsonInclude]
     [JsonPropertyName("pending_media_transcripts")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
-    private List<ManagedTranscriptAttachment>? LegacyPendingMediaTranscripts
+    internal List<ManagedTranscriptAttachment>? LegacyPendingMediaTranscripts
     {
         get => null;
-        init
+        set
         {
             if (value is not null)
                 this.Draft.AddAttachments(value);
@@ -127,7 +127,7 @@ public sealed record ChatThread
     /// continues it must meet the level.
     /// </summary>
     [JsonInclude]
-    public ConfidenceLevel RequiredProviderConfidence { get; private set; } = ConfidenceLevel.NONE;
+    public ConfidenceLevel RequiredProviderConfidence { get; internal set; } = ConfidenceLevel.NONE;
 
     public void RequireProviderConfidence(ConfidenceLevel minimumProviderConfidence)
     {
@@ -164,7 +164,7 @@ public sealed record ChatThread
     /// internal content demands nothing.
     /// </remarks>
     [JsonInclude]
-    public OutboundDataRequirement RequiredOutboundDataRestriction { get; private set; } = OutboundDataRequirement.NONE;
+    public OutboundDataRequirement RequiredOutboundDataRestriction { get; internal set; } = OutboundDataRequirement.NONE;
 
     /// <summary>
     /// Tightens where this chat may still send data to what the data brought in demands, and
@@ -229,7 +229,7 @@ public sealed record ChatThread
     /// immutable, so that a copy of the thread never shares a set which grows later.
     /// </remarks>
     [JsonInclude]
-    public ImmutableHashSet<string> WebAddressesWrittenByModels { get; private set; } = [];
+    public ImmutableHashSet<string> WebAddressesWrittenByModels { get; internal set; } = [];
 
     /// <summary>
     /// The name of the chat thread. Usually generated by an AI model or manually edited by the user.
@@ -244,7 +244,7 @@ public sealed record ChatThread
     /// <summary>
     /// The content blocks of the chat thread.
     /// </summary>
-    public List<ContentBlock> Blocks { get; init; } = [];
+    public List<ContentBlock> Blocks { get; set; } = [];
 
     /// <summary>
     /// The component running this thread, which decides the tools it may use and what its requests name.