`modules/special-scan.js` 中缺少 `firefox` 导入，在执行特殊扫描时会抛出 `ReferenceError: firefox 未定义`

Description

When running special scans using the FindUserProfilesSpecial mode (which performs deep checks for Facebook, Gmail, and Google accounts), the execution crashes with an unhandled ReferenceError: firefox is not defined.

This occurs because firefox.Options() is instantiated across multiple functions in modules/special-scan.js, but the firefox object is never imported from selenium-webdriver/firefox.js. Furthermore, because new firefox.Options() is called before entering the try { ... } block, the exception results in an unhandled promise rejection.