优化支付退款钱包链路

backend/internal/modules/wallet/service.go

@@ -6,6 +6,8 @@ var (
 	ErrDependencyUnavailable = errors.New("dependency unavailable")
 	ErrInvalidAmount         = errors.New("invalid amount")
 	ErrInsufficientBalance   = errors.New("insufficient balance")
+	ErrFeaturePending        = errors.New("feature pending")
+	ErrRechargeDisabled      = errors.New("wallet recharge disabled")
 )
 
 const MinRechargeAmount = 0.01
@@ -36,10 +38,14 @@ func (s *Service) Recharge(userID uint64, req RechargeRequest) (*AccountDTO, err
 	if s.repo == nil {
 		return nil, ErrDependencyUnavailable
 	}
-	if req.Amount < MinRechargeAmount {
-		return nil, ErrInvalidAmount
+	return nil, ErrRechargeDisabled
+}
+
+func (s *Service) Withdraw(userID uint64, req WithdrawRequest) (*AccountDTO, error) {
+	if s.repo == nil {
+		return nil, ErrDependencyUnavailable
 	}
-	return s.repo.Recharge(userID, req.Amount)
+	return nil, ErrFeaturePending
 }
 
 func (s *Service) AdminLedger(query AdminLedgerQuery) (*PaginatedResult, error) {