Add cookie management translations to all languages

Added new translation keys for cookie management features (recommended, file applied, browser applied, cleared messages) to all supported language files for improved internationalization and user feedback.

languages/zh.json

@@ -105,6 +105,7 @@
     "cookie_source": "Cookie 来源",
     "use_cookie_file": "使用 cookie 文件",
     "extract_from_browser": "从浏览器提取",
+    "recommended": "推荐",
     "cookie_file": "Cookie 文件",
     "cookie_file_placeholder": "cookies.txt 文件路径...",
     "browser_selection": "浏览器选择",
@@ -115,7 +116,13 @@
     "browser_extract_message": "应用时将提取浏览器 cookie",
     "file_selected_message": "已选择 Cookie 文件 - 点击确定应用",
     "select_file_title": "选择 Cookie 文件",
-    "file_filter": "Cookie 文件 (*.txt *.lwp)"
+    "file_filter": "Cookie 文件 (*.txt *.lwp)",
+    "file_selected_title": "已应用 Cookie 文件",
+    "file_applied_message": "已应用 Cookie 文件：{path}",
+    "browser_selected_title": "已应用浏览器 Cookie",
+    "browser_applied_message": "将从以下位置提取浏览器 cookie：{browser}",
+    "cleared_title": "已清除 Cookie",
+    "cleared_message": "Cookie 设置已被清除"
   },
   "custom_command": {
     "help_text": "在下面输入您的自定义 yt-dlp 命令。当前网址将自动附加。<br><br>有关选项和使用示例的完整列表，<a href=\"{docs_url}\">点击此处查看官方 yt-dlp 文档</a>。<br><br>注意：下载路径和文件名模板将自动处理。",