Add Password Generator tool

[GhDj]

Summary

• Add new Password Generator tool at /tools/password
• Generate secure random passwords using Web Crypto API
• Configurable length from 4 to 64 characters
• Character set options: uppercase, lowercase, numbers, symbols
• Option to exclude ambiguous characters (0, O, I, l, 1)
• Visual password strength indicator
• Quick presets for common use cases
• Bulk generation up to 50 passwords at once
• Password history with easy copy functionality

Features

• Cryptographic randomness: Uses crypto.getRandomValues() for secure generation
• Strength meter: Visual indicator showing password strength
• Presets: PIN (4 digits), Simple (8 chars), Strong (16 chars), Paranoid (32 chars)
• Bulk mode: Generate multiple passwords at once
• History: Keeps last 10 generated passwords for easy access

Test plan

• All 275 tests passing
• Verify password page loads at /tools/password
• Test generation with different options
• Verify strength indicator updates correctly
• Test presets apply correct settings
• Check copy functionality works

[GhDj]

Merged via cherry-pick into develop