Implement role and user management enhancements

- Added MaxIpLimit to roles, allowing for the configuration of simultaneous IP limits for users.
- Updated role creation and update commands to include MaxIpLimit, ensuring proper handling in the application logic.
- Enhanced user management by introducing a DELETE endpoint for user accounts, with appropriate checks to prevent self-deletion.
- Updated documentation to reflect changes in role and user management, clarifying the new IP limit functionality and user deletion process.
- Adjusted related tests to cover new functionality and ensure robust validation of role and user management features.

frontend/src/shared/lib/i18n.ts

@@ -182,6 +182,9 @@ const resources = {
           reset: 'Сбросить',
           passwordReset: 'Пароль сброшен.',
           configs: 'Конфиги',
+          delete: 'Удалить пользователя',
+          confirmDelete: 'Удалить пользователя? Все его конфиги будут отозваны в 3x-ui, действие необратимо.',
+          deleted: 'Пользователь удалён.',
         },
         activation: {
           empty: 'Нет ожидающих запросов на активацию.',
@@ -195,6 +198,8 @@ const resources = {
           name: 'Название',
           maxConfigs: 'Квота конфигов',
           maxConfigsHint: '−1 = без лимита.',
+          maxIpLimit: 'Лимит IP на конфиг',
+          maxIpLimitHint: '−1 = без лимита. Применяется только к новым конфигам.',
           system: 'системная',
           edit: 'Изменить',
           save: 'Сохранить',
@@ -469,6 +474,9 @@ const resources = {
           reset: 'Reset',
           passwordReset: 'Password reset.',
           configs: 'Configs',
+          delete: 'Delete user',
+          confirmDelete: 'Delete this user? All their configs will be revoked in 3x-ui — this cannot be undone.',
+          deleted: 'User deleted.',
         },
         activation: {
           empty: 'No pending activation requests.',
@@ -482,6 +490,8 @@ const resources = {
           name: 'Name',
           maxConfigs: 'Config quota',
           maxConfigsHint: '−1 = unlimited.',
+          maxIpLimit: 'IP limit per config',
+          maxIpLimitHint: '−1 = unlimited. Applies to new configs only.',
           system: 'system',
           edit: 'Edit',
           save: 'Save',