feat(user): implement OTP login, user creation, and profile management

- Added SendOTP method for simulating OTP sending.
- Implemented LoginWithOTP method for user login/registration via OTP, including user creation if not found.
- Added Me method to retrieve current user information.
- Implemented Update method for updating user profile details.
- Added RealName method for real-name verification.
- Implemented GetNotifications method to fetch user notifications.
- Created user_test.go for comprehensive unit tests covering login, profile retrieval, updates, real-name verification, and notifications.
- Updated database models to use appropriate consts for fields like gender, status, and roles.

backend/database/models/orders.query.gen.go

@@ -28,8 +28,8 @@ func newOrder(db *gorm.DB, opts ...gen.DOOption) orderQuery {
 	_orderQuery.ID = field.NewInt64(tableName, "id")
 	_orderQuery.TenantID = field.NewInt64(tableName, "tenant_id")
 	_orderQuery.UserID = field.NewInt64(tableName, "user_id")
-	_orderQuery.Type = field.NewString(tableName, "type")
-	_orderQuery.Status = field.NewString(tableName, "status")
+	_orderQuery.Type = field.NewField(tableName, "type")
+	_orderQuery.Status = field.NewField(tableName, "status")
 	_orderQuery.Currency = field.NewString(tableName, "currency")
 	_orderQuery.AmountOriginal = field.NewInt64(tableName, "amount_original")
 	_orderQuery.AmountDiscount = field.NewInt64(tableName, "amount_discount")
@@ -56,8 +56,8 @@ type orderQuery struct {
 	ID                   field.Int64
 	TenantID             field.Int64
 	UserID               field.Int64
-	Type                 field.String
-	Status               field.String
+	Type                 field.Field
+	Status               field.Field
 	Currency             field.String
 	AmountOriginal       field.Int64
 	AmountDiscount       field.Int64
@@ -90,8 +90,8 @@ func (o *orderQuery) updateTableName(table string) *orderQuery {
 	o.ID = field.NewInt64(table, "id")
 	o.TenantID = field.NewInt64(table, "tenant_id")
 	o.UserID = field.NewInt64(table, "user_id")
-	o.Type = field.NewString(table, "type")
-	o.Status = field.NewString(table, "status")
+	o.Type = field.NewField(table, "type")
+	o.Status = field.NewField(table, "status")
 	o.Currency = field.NewString(table, "currency")
 	o.AmountOriginal = field.NewInt64(table, "amount_original")
 	o.AmountDiscount = field.NewInt64(table, "amount_discount")