calculatorAccurate mathematical calculations. Use when user needs to compute: (1) Basic arithmetic (+, -, *, /), (2) Powers and roots (^, sqrt), (3) Percentages, (4) Trigonometry (sin, cos, tan), (5) Logarithms (log, ln), (6) Complex expressions, (7) Unit conversions.
password-generator生成12-16位随机安全密码，包含大小写字母、数字和符号，支持自定义长度和字符集设置。