Password Strength Checker

Checks password strength and provides security recommendations:

• Password length check (minimum 8 characters)
• Uppercase and lowercase letter check
• Number check
• Special character check
• Common password detection
• Entropy calculation

Use builtin_password_strength_checker tool with fields:

• password: the password to check (required)
• min_length: (optional) minimum length requirement (default: 8)

Returns strength score (0-100) and improvement recommendations.