Build self-contained macOS client and verify native beta path

project/asset_root.gd

@@ -47,11 +47,16 @@ static func available() -> bool:
 	return DirAccess.dir_exists_absolute(path())
 
 # --- 40250 client (pack/Index + .eix/.epk), docs/PORT-PLAN.md 2R item 6 / 2D ---
-# 解析顺序：环境变量 MT_40250_CLIENT；开发树 res://../../40250/Server Client TMP4/Client。
+# 解析顺序：显式覆盖、macOS .app 内的自包含资源、开发树。
 static func client_path() -> String:
 	var env := OS.get_environment("MT_40250_CLIENT")
 	if env != "":
 		return env
+	var exe := OS.get_executable_path()
+	if exe != "":
+		var bundled := exe.get_base_dir().path_join("../Resources/40250/Client").simplify_path()
+		if FileAccess.file_exists(bundled.path_join("pack/Index")):
+			return bundled
 	return ProjectSettings.globalize_path("res://../../40250/Server Client TMP4/Client").simplify_path()
 
 # 按 40250 PackInitialize("pack") 注册 <client>/pack；只注册一次，之后返回首次结果。