- Add encrypted cast to UserTwoFactorAuth secret and recovery_codes
- Hash invitation tokens on creation using Hash::make()
- Update token verification to use Hash::check()
- Add migration commands for existing data:
- security:encrypt-2fa-secrets
- security:hash-invitation-tokens
- Add tests for encryption and hashing
Fixes SEC-003, SEC-004 from security audit.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
