Bug Fix: Fix LAN host banlist loading from Expansions and .ypk

When creating a local LAN host, MDPro3 now temporarily writes a merged Data/lflist.conf (official + Expansions/lflist.conf + zipped/.ypk lflist.conf) before starting ygoserver, then restores the original file when the server stops. This makes LAN use the same expansion banlists shown in UI without changing non-LAN behavior.

Assets/Scripts/MDPro3/Duel/YGOSharp/BanlistManager.cs

 using Ionic.Zip;
 using MDPro3.Servant;
+using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Text;
 
 namespace MDPro3.Duel.YGOSharp
 {
@@ -9,6 +11,9 @@ namespace MDPro3.Duel.YGOSharp
     {
         public static List<Banlist> Banlists { get; private set; }
         public static string EmptyBanlistName = "N/A";
+        private static bool localServerLflistInjected;
+        private static string localServerLflistBackupContent;
+        private const string LfListFileName = "lflist.conf";
 
         public static void Initialize()
         {
@@ -54,6 +59,110 @@ namespace MDPro3.Duel.YGOSharp
             Banlists.Add(current);
         }
 
+        public static void PrepareLocalServerLflist()
+        {
+            if (localServerLflistInjected)
+                return;
+            if (!Config.GetBool("Expansions", true))
+                return;
+
+            try
+            {
+                if (!File.Exists(Program.PATH_LFLIST))
+                    return;
+
+                localServerLflistBackupContent = File.ReadAllText(Program.PATH_LFLIST);
+                var mergedContent = BuildMergedLflistContent();
+
+                if (string.IsNullOrEmpty(mergedContent) || mergedContent == localServerLflistBackupContent)
+                {
+                    localServerLflistBackupContent = null;
+                    return;
+                }
+
+                File.WriteAllText(Program.PATH_LFLIST, mergedContent);
+                localServerLflistInjected = true;
+            }
+            catch (Exception e)
+            {
+                localServerLflistBackupContent = null;
+                localServerLflistInjected = false;
+                UnityEngine.Debug.LogError("Failed to prepare LAN lflist.conf.");
+                UnityEngine.Debug.LogException(e);
+            }
+        }
+
+        public static void RestoreLocalServerLflist()
+        {
+            if (!localServerLflistInjected)
+                return;
+
+            try
+            {
+                if (localServerLflistBackupContent != null)
+                    File.WriteAllText(Program.PATH_LFLIST, localServerLflistBackupContent);
+            }
+            catch (Exception e)
+            {
+                UnityEngine.Debug.LogError("Failed to restore original lflist.conf.");
+                UnityEngine.Debug.LogException(e);
+            }
+            finally
+            {
+                localServerLflistBackupContent = null;
+                localServerLflistInjected = false;
+            }
+        }
+
+        private static string BuildMergedLflistContent()
+        {
+            StringBuilder builder = new StringBuilder();
+            var confPath = Program.PATH_EXPANSIONS + LfListFileName;
+            AppendLflistFromFile(builder, confPath);
+
+            foreach (var zip in ZipHelper.zips)
+            {
+                if (zip.Name.ToLower().EndsWith("script.zip"))
+                    continue;
+                foreach (var file in zip.EntryFileNames)
+                {
+                    if (!file.ToLower().EndsWith(LfListFileName))
+                        continue;
+
+                    var entry = zip[file];
+                    using (var memoryStream = new MemoryStream())
+                    {
+                        entry.Extract(memoryStream);
+                        memoryStream.Position = 0;
+                        using (var reader = new StreamReader(memoryStream))
+                            AppendLflistText(builder, reader.ReadToEnd());
+                    }
+                }
+            }
+
+            AppendLflistFromFile(builder, Program.PATH_LFLIST);
+            return builder.ToString();
+        }
+
+        private static void AppendLflistFromFile(StringBuilder builder, string path)
+        {
+            if (!File.Exists(path))
+                return;
+            AppendLflistText(builder, File.ReadAllText(path));
+        }
+
+        private static void AppendLflistText(StringBuilder builder, string text)
+        {
+            if (string.IsNullOrWhiteSpace(text))
+                return;
+
+            if (builder.Length > 0 && builder[builder.Length - 1] != '\n')
+                builder.AppendLine();
+            builder.Append(text);
+            if (builder.Length > 0 && builder[builder.Length - 1] != '\n')
+                builder.AppendLine();
+        }
+
         public static void InitializeFromReader(StreamReader reader)
         {
             Banlist current = null;
@@ -149,4 +258,4 @@ namespace MDPro3.Duel.YGOSharp
             return returnValue;
         }
     }
-}
+}
\ No newline at end of file

Assets/Scripts/MDPro3/Duel/YgoServer.cs

 using System.Runtime.InteropServices;
 using System.Threading;
+using MDPro3.Duel.YGOSharp;
 
 namespace MDPro3.Net
 {
@@ -21,15 +22,29 @@ namespace MDPro3.Net
 
             serverThread = new Thread(() =>
             {
-                Dll.start_server(args);
+                try
+                {
+                    Dll.start_server(args);
+                }
+                finally
+                {
+                    BanlistManager.RestoreLocalServerLflist();
+                }
             });
             serverThread.Start();
         }
 
         public static void StopServer()
         {
-            Dll.stop_server();
-            serverThread?.Abort();
+            try
+            {
+                Dll.stop_server();
+            }
+            finally
+            {
+                serverThread?.Abort();
+                BanlistManager.RestoreLocalServerLflist();
+            }
         }
 
         public static bool ServerRunning()

Assets/Scripts/MDPro3/Servant/OnlineServant.cs

@@ -147,6 +147,7 @@ namespace MDPro3.Servant
             RoomServant.FromLocalHost = true;
             RoomServant.FromHandTest = false;
 
+            BanlistManager.PrepareLocalServerLflist();
             YgoServer.StartServer(args);
             TcpHelper.LinkStart("127.0.0.1", Config.Get("DuelPlayerName0", Config.EMPTY_STRING), port.ToString(), string.Empty, true, null);
         }