Revert "fix: 避免设计时生成不必要的data文件夹"

This reverts commit 2ac878dbbd.

.gitignore

@@ -467,3 +467,6 @@ Thumbs.db
 
 # macOS Finder Shit
 .DS_Store
+
+# wpf 设计器会运行代码）
+data/

src/MaaWpfGui/Helper/JsonDataHelper.cs

@@ -22,10 +22,25 @@ namespace MaaWpfGui.Helper
 {
     public static class JsonDataHelper
     {
-        private static readonly string _dataDir = "data";
+        private static readonly string _dataDir = Path.Combine(Environment.CurrentDirectory, "data");
         private static readonly object _lock = new();
         private static readonly ILogger _logger = Log.ForContext("SourceContext", "JsonDataHelper");
 
+        static JsonDataHelper()
+        {
+            try
+            {
+                if (!Directory.Exists(_dataDir))
+                {
+                    Directory.CreateDirectory(_dataDir);
+                }
+            }
+            catch (Exception ex)
+            {
+                _logger.Error(ex, "Failed to create data directory.");
+            }
+        }
+
         /// <summary>
         /// 从 data/{key}.json 读取对象，如果不存在则返回 defaultValue
         /// </summary>
@@ -76,7 +91,6 @@ namespace MaaWpfGui.Helper
             {
                 try
                 {
-                    Directory.CreateDirectory(_dataDir);
                     var json = JsonConvert.SerializeObject(value, Formatting.Indented);
                     File.WriteAllText(filePath, json);
                     return true;