完善生图5.0的功能

backend/internal/billing/service.go

@@ -82,6 +82,17 @@ func (s *Service) Quote(ctx context.Context, command QuoteCommand) (*Quote, erro
 		return quote, err
 	}
 	if command.Provider == "seedream" && IsSeedreamBillingModel(command.ReqKey) {
+		layerDecomposition, _ := parameters["layerDecomposition"].(bool)
+		if layerDecomposition {
+			quote.ReservedAmountFen = quote.AmountFen
+			quote.SettlementStatus = "pending"
+			if quote.Parameters == nil {
+				quote.Parameters = Parameters{}
+			}
+			quote.Parameters["layerDecomposition"] = true
+			quote.Parameters["maximumOutputCount"] = float64(17)
+			return quote, nil
+		}
 		referenceImageCount := 0
 		if count, ok := number(parameters["referenceImageCount"]); ok {
 			referenceImageCount = int(math.Ceil(count))