chore(unity): 固定Unity CLI Loop本地包并移除UnitySkills依赖

Client/Packages/io.github.hatayama.uloopmcp/Editor/UI/EditorDialogHelper.cs

@@ -0,0 +1,23 @@
+using UnityEditor;
+
+namespace io.github.hatayama.uLoopMCP
+{
+    public static class EditorDialogHelper
+    {
+        public static void ShowSkillsInstalledDialog()
+        {
+#if UNITY_6000_3_OR_NEWER
+            EditorDialog.DisplayAlertDialog(
+                "Skills Installed",
+                "Skills have been installed successfully.",
+                "OK",
+                DialogIconType.Info);
+#else
+            EditorUtility.DisplayDialog(
+                "Skills Installed",
+                "Skills have been installed successfully.",
+                "OK");
+#endif
+        }
+    }
+}