Moved the chats of the BeyondFacts Lab to the embedded chat of assistants (#1203)

app/Tests/Chat/Embedded/InMemoryEmbeddedChatStore.cs

@@ -26,6 +26,12 @@ public sealed class InMemoryEmbeddedChatStore : IEmbeddedChatStore
     /// <param name="chatId">The ID of the chat.</param>
     public IReadOnlyList<ContentBlock> StoredBlocks(Guid chatId) => this.threads.TryGetValue(chatId, out var thread) ? thread.Blocks : [];
 
+    /// <summary>
+    /// Tells whether a chat is stored.
+    /// </summary>
+    /// <param name="chatId">The ID of the chat.</param>
+    public bool IsStored(Guid chatId) => this.threads.ContainsKey(chatId);
+
     /// <inheritdoc />
     public Task<ChatThread?> LoadThreadAsync(Guid chatId, CancellationToken token = default)
     {
@@ -43,4 +49,11 @@ public sealed class InMemoryEmbeddedChatStore : IEmbeddedChatStore
         this.SaveCount++;
         return Task.CompletedTask;
     }
+
+    /// <inheritdoc />
+    public Task DeleteThreadAsync(Guid chatId, CancellationToken token = default)
+    {
+        this.threads.Remove(chatId);
+        return Task.CompletedTask;
+    }
 }