- SettingsCurrencies: RHF+Zod (code required max 3, name required, symbol required max 5)
- SettingsTaxes: RHF+Zod (name required, rate numeric 0-100, country max 2)
- SettingsSequences: RHF+Zod (name required, padding numeric 1-10)
- SettingsUsers: RHF+Zod (name required, email valid, password min 8)
- SettingsRoles: RHF+Zod for create form (name required)
- SettingsGroups: RHF+Zod for create form (name required, description optional)
- Error display under each field
- Preserved all existing functionality: CRUD, permissions, members
- Added 2 validation tests for SettingsCurrencies