feat(xcode): 支持渠道专属 Xcode 配置合并

从命令行参数读取 -channel 标识，加载 XCodeConfig.{channel}.json
并以最高优先级合并到最终配置中，实现多渠道差异化构建。

Author: AlianBlank

Editor/PostProcessBuildHelper.cs

@@ -48,6 +48,34 @@ public static void OnPostProcessBuild(BuildTarget target, string path)
                     finalConfig.Merge(table);
                 }
 
+                // 合并渠道专属配置（优先级最高，最后合并覆盖）
+                string channel = SettingLoader.GetChannel();
+                if (!string.IsNullOrEmpty(channel))
+                {
+                    var channelPaths = SettingLoader.LoadChannelSettingsData("XCodeConfig.json", channel);
+                    if (channelPaths.Count > 0)
+                    {
+                        LogHelper.Log($"[MergeConfig] 检测到渠道: {channel}，正在合并渠道配置...");
+                        foreach (var channelPath in channelPaths)
+                        {
+                            LogHelper.Log($"[MergeConfig] 正在合并渠道配置: {channelPath}");
+                            string channelJson = File.ReadAllText(channelPath);
+                            Hashtable channelTable = channelJson.HashtableFromJson();
+                            if (channelTable == null)
+                            {
+                                LogHelper.Error($"{channelPath} 解析失败, 跳过合并");
+                                continue;
+                            }
+
+                            finalConfig.Merge(channelTable);
+                        }
+                    }
+                    else
+                    {
+                        LogHelper.Log($"[MergeConfig] 未找到渠道 [{channel}] 的专属配置文件 XCodeConfig.{channel}.json");
+                    }
+                }
+
                 if (finalConfig.Count == 0)
                 {
                     LogHelper.Error("合并后的配置为空，跳过设置");

Editor/SettingLoader.cs

@@ -1,4 +1,5 @@
 #if UNITY_IOS
+using System;
 using System.Collections.Generic;
 using System.IO;
 using UnityEditor;
@@ -8,6 +9,25 @@ namespace GameFrameX.Xcode.Editor
 {
     public class SettingLoader
     {
+        private const string CHANNEL_ARG = "-channel";
+
+        /// <summary>
+        /// 从命令行参数中获取当前渠道标识
+        /// </summary>
+        public static string GetChannel()
+        {
+            var args = Environment.GetCommandLineArgs();
+            for (int i = 0; i < args.Length - 1; i++)
+            {
+                if (args[i].Equals(CHANNEL_ARG, StringComparison.OrdinalIgnoreCase))
+                {
+                    return args[i + 1];
+                }
+            }
+
+            return null;
+        }
+
         /// <summary>
         /// 加载所有匹配的配置文件
         /// </summary>
@@ -33,6 +53,40 @@ public static List<string> LoadSettingsData(string fileName)
             results.Sort();
             return results;
         }
+
+        /// <summary>
+        /// 加载渠道专属配置文件，文件名格式为 XCodeConfig.{channel}.json
+        /// </summary>
+        /// <param name="baseFileName">基础文件名，如 XCodeConfig.json</param>
+        /// <param name="channel">渠道标识</param>
+        /// <returns>文件路径列表</returns>
+        public static List<string> LoadChannelSettingsData(string baseFileName, string channel)
+        {
+            if (string.IsNullOrEmpty(channel))
+            {
+                return new List<string>(0);
+            }
+
+            string baseName = Path.GetFileNameWithoutExtension(baseFileName);
+            string ext = Path.GetExtension(baseFileName);
+            string channelFileName = $"{baseName}.{channel}{ext}";
+
+            var guids = AssetDatabase.FindAssets($"t:textasset");
+            var results = new List<string>(4);
+            foreach (var guid in guids)
+            {
+                string path = AssetDatabase.GUIDToAssetPath(guid);
+                var newFileName = Path.GetFileName(path);
+
+                if (newFileName.Equals(channelFileName, StringComparison.OrdinalIgnoreCase))
+                {
+                    results.Add(path);
+                }
+            }
+
+            results.Sort();
+            return results;
+        }
     }
 }
 #endif