Replace duplicated inline validation with a shared validatePassword()
utility that checks minimum length (8), rejects repetitive and common
passwords, and requires uppercase, lowercase, a digit, and a special
character.
- Add server/src/services/passwordPolicy.ts as single source of truth
- Apply to registration, password change, and admin create/edit user
(admin routes previously had zero validation)
- Fix client min-length mismatch (6 vs 8) in RegisterPage and LoginPage
- Add client-side password length guard to AdminPage forms
- Update register.passwordTooShort and settings.passwordWeak i18n keys
in all 12 locales to reflect the corrected requirements
e03505dca2