fix(ci): resolve all lint errors for GitHub Actions

- Remove unused SupportedLocale import in results.tsx
- Remove unused webroot variable in public/i18n.js
- Configure knip.json to ignore i18n public API exports
- Add language-selector and language-option to ESLint ignore list
- Auto-fix Prettier formatting across all files
- Fix better-tailwindcss line wrapping issues

docs/getting-started.md

@@ -35,6 +35,7 @@ docker run -d \
 ```
 
 開啟瀏覽器訪問 `http://localhost:3000`：
+
 1. 點擊右上角 **Register** 註冊帳號
 2. 輸入 Email 和密碼
 3. 完成！開始使用