Update dependencies and refactor Chatbot for new OpenAI API

- Upgrade multiple NuGet packages to latest (incl. pre-release) versions across projects
- Refactor Chatbot.razor to use AgentSession and InMemoryChatHistoryProvider per Microsoft.Agents.AI.OpenAI API changes
- Update using statements and improve code clarity
- Aligns chatbot logic with latest OpenAI agent session model and storage APIs

Author: neozhu

src/Application/Application.csproj

@@ -19,8 +19,8 @@
         <PackageReference Include="FluentValidation.DependencyInjectionExtensions" Version="12.1.1" />
         <PackageReference Include="Microsoft.AspNetCore.Components.Web" Version="10.0.2" />
         <PackageReference Include="Microsoft.Extensions.Localization.Abstractions" Version="10.0.2" />
-        <PackageReference Include="Newtonsoft.Json" Version="13.0.4" />
-        <PackageReference Include="Riok.Mapperly" Version="4.3.1" />
+        <PackageReference Include="Newtonsoft.Json" Version="13.0.5-beta1" />
+        <PackageReference Include="Riok.Mapperly" Version="5.0.0-next.0" />
         <PackageReference Include="System.Linq.Dynamic.Core" Version="1.7.1" />
         <PackageReference Include="Hangfire.Core" Version="1.8.22" />
         <PackageReference Include="ZiggyCreatures.FusionCache" Version="2.5.0" />

src/Domain/Domain.csproj

@@ -20,7 +20,7 @@
         <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="10.0.0" />
         <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="10.0.2" />
         <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="10.0.2" />
-        <PackageReference Include="EFCore.NamingConventions" Version="10.0.0" />
+        <PackageReference Include="EFCore.NamingConventions" Version="10.0.1" />
         <PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="10.0.2" />
         <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="10.0.2" />
         <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="10.0.2">

src/Infrastructure/Infrastructure.csproj

@@ -8,14 +8,14 @@
         <LangVersion>default</LangVersion>
     </PropertyGroup>
     <ItemGroup>
-        <PackageReference Include="Microsoft.Agents.AI.OpenAI" Version="1.0.0-preview.260121.1" />
+        <PackageReference Include="Microsoft.Agents.AI.OpenAI" Version="1.0.0-preview.260128.1" />
         <PackageReference Include="OpenAI" Version="2.8.0" />
         <PackageReference Include="Microsoft.AspNetCore.Authentication.Facebook" Version="10.0.2" />
         <PackageReference Include="Microsoft.AspNetCore.Authentication.Google" Version="10.0.2" />
         <PackageReference Include="Microsoft.AspNetCore.Authentication.MicrosoftAccount" Version="10.0.2" />
-        <PackageReference Include="QuestPDF" Version="2025.12.2" />
+        <PackageReference Include="QuestPDF" Version="2025.12.3.1-alpha2" />
         <PackageReference Include="Serilog.AspNetCore" Version="10.0.0" />
-        <PackageReference Include="Serilog.Sinks.MSSqlServer" Version="9.0.2" />
+        <PackageReference Include="Serilog.Sinks.MSSqlServer" Version="9.0.3-dev-00155" />
         <PackageReference Include="Serilog.Sinks.Postgresql.Alternative" Version="4.2.0" />
         <PackageReference Include="Serilog.Sinks.Async" Version="2.1.0" />
         <PackageReference Include="Serilog.Sinks.Console" Version="6.1.1" />

src/Server.UI/Pages/AI/Chatbot.razor

@@ -1,5 +1,6 @@
 @page "/ai/chatbot"
 
+@using Microsoft.Extensions.VectorData
 @using OpenAI
 @using OpenAI.Chat
 @using Microsoft.Agents.AI
@@ -244,23 +245,22 @@
 </style>
 
 @code {
-	// Define local data model
-	private class ChatMessage
-	{
-		public string Role { get; set; } = "user";
-		public string Content { get; set; } = string.Empty;
-	}
-
-	private List<ChatMessage> messages = new();
-	private string userInput = string.Empty;
-	private bool isLoading = false;
-	private bool preventDefaultEnter = false;
-	private ElementReference messagesEndRef;
-	private AIAgent? _agent;
-	private AgentThread? _thread;
-
-	[CascadingParameter]
-	private UserProfile? UserProfile { get; set; }
+    // Define local data model
+    private class ChatMessage
+    {
+        public string Role { get; set; } = "user";
+        public string Content { get; set; } = string.Empty;
+    }
+
+    private List<ChatMessage> messages = new();
+    private string userInput = string.Empty;
+    private bool isLoading = false;
+    private bool preventDefaultEnter = false;
+    private ElementReference messagesEndRef;
+    private AIAgent? _agent;
+    private AgentSession? _agentSession;
+    [CascadingParameter]
+    private UserProfile UserProfile { get; set; }
 
 	protected override async Task OnAfterRenderAsync(bool firstRender)
 	{
@@ -286,6 +286,7 @@
 	{
 		if (_agent is not null) return;
 
+         
 		var apiKey = Configuration["AISettings:OpenAIApiKey"];
 		if (string.IsNullOrEmpty(apiKey) || apiKey == "your-openai-api-key")
 		{
@@ -305,14 +306,14 @@
 				Instructions = instructions,
 				Tools = [AIFunctionFactory.Create(GetCurrentDate)]
 			},
-			ChatMessageStoreFactory = (ctx, ct) => new ValueTask<ChatMessageStore>(
-				new InMemoryChatMessageStore(
-					#pragma warning disable MEAI001
-					new MessageCountingChatReducer(5),
-					#pragma warning restore MEAI001
-					ctx.SerializedState,
-					ctx.JsonSerializerOptions,
-					InMemoryChatMessageStore.ChatReducerTriggerEvent.AfterMessageAdded))
+            ChatHistoryProviderFactory = (ctx, ct) => new ValueTask<ChatHistoryProvider>(
+            new InMemoryChatHistoryProvider(
+#pragma warning disable MEAI001
+                new MessageCountingChatReducer(5),
+#pragma warning restore MEAI001
+                ctx.SerializedState,
+                ctx.JsonSerializerOptions,
+                InMemoryChatHistoryProvider.ChatReducerTriggerEvent.AfterMessageAdded))
 		});
 	}
 
@@ -353,10 +354,10 @@
 		try
 		{
 			InitializeAgent();
-			_thread ??= await _agent!.GetNewThreadAsync();
+            _agentSession ??= await _agent!.GetNewSessionAsync();
 
 			var options = new AgentRunOptions();
-			await foreach (var update in _agent!.RunStreamingAsync(userMessageContent, _thread, options, CancellationToken.None))
+            await foreach (var update in _agent!.RunStreamingAsync(userMessageContent, _agentSession, options, CancellationToken.None))
 			{
 				if (!string.IsNullOrEmpty(update.Text))
 				{

src/Server.UI/Server.UI.csproj

@@ -22,7 +22,7 @@
         <PackageReference Include="Microsoft.AspNetCore.SignalR.Client" Version="10.0.2" />
         <PackageReference Include="MudBlazor" Version="8.15.0" />
         <PackageReference Include="Toolbelt.Blazor.HotKeys2" Version="6.2.0" />
-        <PackageReference Include="Blazor-ApexCharts" Version="6.0.2" />
+        <PackageReference Include="Blazor-ApexCharts" Version="6.1.0" />
         <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="10.0.2">
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>