Function validatePasswordStrength

validatePasswordStrength(password: string): Promise<PasswordValidationResult>
Validates password strength with detailed feedback.

Performs 7 checks: length ≥14, 4 character types, unique chars ≥12, no repeats, no sequential patterns, not in common list, entropy ≥80 bits, and HIBP breach check.

Note: HIBP check (see checkPasswordLeak) is fail-open and holds the password + SHA-1 hash in memory until GC — inherent to the string API.
Parameters
- password: string
  The password to validate.
Returns Promise<PasswordValidationResult>
A detailed validation result.
Example
```
const result = validatePasswordStrength('MyStr0ng!Pass#2024');
if (!result.isSecure) {
  console.warn(result.feedback);
}
```
- Defined in packages/crypto/src/validation/password.ts:179