统一金额分制重构

backend/internal/modules/admindashboard/dto.go

@@ -11,14 +11,14 @@ type DashboardDTO struct {
 }
 
 type MetricsDTO struct {
-	TotalUsers        int64   `json:"total_users"`
-	VerifiedUsers     int64   `json:"verified_users"`
-	TotalListings     int64   `json:"total_listings"`
-	PublishedListings int64   `json:"published_listings"`
-	TotalOrders       int64   `json:"total_orders"`
-	RentingOrders     int64   `json:"renting_orders"`
-	TodayOrders       int64   `json:"today_orders"`
-	TodayLedgerAmount float64 `json:"today_ledger_amount"`
+	TotalUsers            int64 `json:"total_users"`
+	VerifiedUsers         int64 `json:"verified_users"`
+	TotalListings         int64 `json:"total_listings"`
+	PublishedListings     int64 `json:"published_listings"`
+	TotalOrders           int64 `json:"total_orders"`
+	RentingOrders         int64 `json:"renting_orders"`
+	TodayOrders           int64 `json:"today_orders"`
+	TodayLedgerAmountCent int64 `json:"today_ledger_amount_cent"`
 }
 
 type PendingDTO struct {
@@ -29,15 +29,15 @@ type PendingDTO struct {
 }
 
 type RecentOrderDTO struct {
-	ID            uint64    `json:"id"`
-	OrderNo       string    `json:"order_no"`
-	Title         string    `json:"title"`
-	RenterID      uint64    `json:"renter_id"`
-	OwnerID       uint64    `json:"owner_id"`
-	Status        string    `json:"status"`
-	RentAmount    float64   `json:"rent_amount"`
-	DepositAmount float64   `json:"deposit_amount"`
-	CreatedAt     time.Time `json:"created_at"`
+	ID                uint64    `json:"id"`
+	OrderNo           string    `json:"order_no"`
+	Title             string    `json:"title"`
+	RenterID          uint64    `json:"renter_id"`
+	OwnerID           uint64    `json:"owner_id"`
+	Status            string    `json:"status"`
+	RentAmountCent    int64     `json:"rent_amount_cent"`
+	DepositAmountCent int64     `json:"deposit_amount_cent"`
+	CreatedAt         time.Time `json:"created_at"`
 }
 
 type RecentDisputeDTO struct {

backend/internal/modules/admindashboard/repository.go

@@ -44,9 +44,9 @@ func (r *Repository) Summary() (*DashboardDTO, error) {
 		return nil, err
 	}
 	if err := r.db.Model(&model.WalletLedger{}).
-		Select("COALESCE(SUM(amount), 0)").
+		Select("COALESCE(SUM(amount_cent), 0)").
 		Where("created_at >= ?", today).
-		Scan(&metrics.TodayLedgerAmount).Error; err != nil {
+		Scan(&metrics.TodayLedgerAmountCent).Error; err != nil {
 		return nil, err
 	}
 	if err := r.db.Model(&model.RentalListing{}).Where("review_status = ?", "pending").Count(&pending.ListingReviews).Error; err != nil {
@@ -81,7 +81,7 @@ func (r *Repository) Summary() (*DashboardDTO, error) {
 func (r *Repository) recentOrders() ([]RecentOrderDTO, error) {
 	rows := make([]RecentOrderDTO, 0)
 	err := r.db.Table("rental_orders AS o").
-		Select("o.id, o.order_no, a.title, o.renter_id, o.owner_id, o.status, o.rent_amount, o.deposit_amount, o.created_at").
+		Select("o.id, o.order_no, a.title, o.renter_id, o.owner_id, o.status, o.rent_amount_cent, o.deposit_amount_cent, o.created_at").
 		Joins("JOIN game_accounts AS a ON a.id = o.account_id").
 		Order("o.id DESC").
 		Limit(8).

backend/internal/modules/adminfinance/dto.go

@@ -26,35 +26,35 @@ type DashboardDTO struct {
 }
 
 type FinanceSummaryDTO struct {
-	TotalFlowAmountCent     int64   `json:"total_flow_amount_cent"`
-	TotalRefundAmountCent   int64   `json:"total_refund_amount_cent"`
-	PendingRefundAmountCent int64   `json:"pending_refund_amount_cent"`
-	ChannelNetAmountCent    int64   `json:"channel_net_amount_cent"`
-	PlatformIncomeAmount    float64 `json:"platform_income_amount"`
-	OwnerShouldIncomeAmount float64 `json:"owner_should_income_amount"`
-	OwnerWalletIncomeAmount float64 `json:"owner_wallet_income_amount"`
-	SettlementDiffAmount    float64 `json:"settlement_diff_amount"`
-	SuccessfulPayCount      int64   `json:"successful_pay_count"`
-	SuccessfulRefundCount   int64   `json:"successful_refund_count"`
-	PendingRefundCount      int64   `json:"pending_refund_count"`
-	SettledOrderCount       int64   `json:"settled_order_count"`
-	FinancialExceptionCount int64   `json:"financial_exception_count"`
+	TotalFlowAmountCent         int64 `json:"total_flow_amount_cent"`
+	TotalRefundAmountCent       int64 `json:"total_refund_amount_cent"`
+	PendingRefundAmountCent     int64 `json:"pending_refund_amount_cent"`
+	ChannelNetAmountCent        int64 `json:"channel_net_amount_cent"`
+	PlatformIncomeAmountCent    int64 `json:"platform_income_amount_cent"`
+	OwnerShouldIncomeAmountCent int64 `json:"owner_should_income_amount_cent"`
+	OwnerWalletIncomeAmountCent int64 `json:"owner_wallet_income_amount_cent"`
+	SettlementDiffAmountCent    int64 `json:"settlement_diff_amount_cent"`
+	SuccessfulPayCount          int64 `json:"successful_pay_count"`
+	SuccessfulRefundCount       int64 `json:"successful_refund_count"`
+	PendingRefundCount          int64 `json:"pending_refund_count"`
+	SettledOrderCount           int64 `json:"settled_order_count"`
+	FinancialExceptionCount     int64 `json:"financial_exception_count"`
 }
 
 type FinanceDailyDTO struct {
-	Date                    string  `json:"date"`
-	TotalFlowAmountCent     int64   `json:"total_flow_amount_cent"`
-	TotalRefundAmountCent   int64   `json:"total_refund_amount_cent"`
-	PendingRefundAmountCent int64   `json:"pending_refund_amount_cent"`
-	ChannelNetAmountCent    int64   `json:"channel_net_amount_cent"`
-	PlatformIncomeAmount    float64 `json:"platform_income_amount"`
-	OwnerShouldIncomeAmount float64 `json:"owner_should_income_amount"`
-	OwnerWalletIncomeAmount float64 `json:"owner_wallet_income_amount"`
-	SettlementDiffAmount    float64 `json:"settlement_diff_amount"`
-	SuccessfulPayCount      int64   `json:"successful_pay_count"`
-	SuccessfulRefundCount   int64   `json:"successful_refund_count"`
-	PendingRefundCount      int64   `json:"pending_refund_count"`
-	SettledOrderCount       int64   `json:"settled_order_count"`
+	Date                        string `json:"date"`
+	TotalFlowAmountCent         int64  `json:"total_flow_amount_cent"`
+	TotalRefundAmountCent       int64  `json:"total_refund_amount_cent"`
+	PendingRefundAmountCent     int64  `json:"pending_refund_amount_cent"`
+	ChannelNetAmountCent        int64  `json:"channel_net_amount_cent"`
+	PlatformIncomeAmountCent    int64  `json:"platform_income_amount_cent"`
+	OwnerShouldIncomeAmountCent int64  `json:"owner_should_income_amount_cent"`
+	OwnerWalletIncomeAmountCent int64  `json:"owner_wallet_income_amount_cent"`
+	SettlementDiffAmountCent    int64  `json:"settlement_diff_amount_cent"`
+	SuccessfulPayCount          int64  `json:"successful_pay_count"`
+	SuccessfulRefundCount       int64  `json:"successful_refund_count"`
+	PendingRefundCount          int64  `json:"pending_refund_count"`
+	SettledOrderCount           int64  `json:"settled_order_count"`
 }
 
 type PaginatedResult struct {
@@ -65,32 +65,32 @@ type PaginatedResult struct {
 }
 
 type FinanceDetailDTO struct {
-	OrderID                 uint64     `json:"order_id"`
-	OrderNo                 string     `json:"order_no"`
-	OrderStatus             string     `json:"order_status"`
-	SettlementStatus        string     `json:"settlement_status"`
-	RefundStatus            string     `json:"refund_status"`
-	RenterID                uint64     `json:"renter_id"`
-	RenterPhone             string     `json:"renter_phone"`
-	RenterNickname          string     `json:"renter_nickname"`
-	OwnerID                 uint64     `json:"owner_id"`
-	OwnerPhone              string     `json:"owner_phone"`
-	OwnerNickname           string     `json:"owner_nickname"`
-	OrderRentAmount         float64    `json:"order_rent_amount"`
-	OrderDepositAmount      float64    `json:"order_deposit_amount"`
-	CheckoutRentAmount      float64    `json:"checkout_rent_amount"`
-	CheckoutRenterRefund    float64    `json:"checkout_renter_refund"`
-	CheckoutOwnerIncome     float64    `json:"checkout_owner_income"`
-	CheckoutPlatformFee     float64    `json:"checkout_platform_fee"`
-	OwnerWalletIncomeAmount float64    `json:"owner_wallet_income_amount"`
-	PaidAmountCent          int64      `json:"paid_amount_cent"`
-	RefundedAmountCent      int64      `json:"refunded_amount_cent"`
-	RefundingAmountCent     int64      `json:"refunding_amount_cent"`
-	FailedRefundAmountCent  int64      `json:"failed_refund_amount_cent"`
-	ChannelNetAmountCent    int64      `json:"channel_net_amount_cent"`
-	PlatformNetAmount       float64    `json:"platform_net_amount"`
-	SettlementDiffAmount    float64    `json:"settlement_diff_amount"`
-	FinanceStatus           string     `json:"finance_status"`
-	CreatedAt               time.Time  `json:"created_at"`
-	SettledAt               *time.Time `json:"settled_at,omitempty"`
+	OrderID                     uint64     `json:"order_id"`
+	OrderNo                     string     `json:"order_no"`
+	OrderStatus                 string     `json:"order_status"`
+	SettlementStatus            string     `json:"settlement_status"`
+	RefundStatus                string     `json:"refund_status"`
+	RenterID                    uint64     `json:"renter_id"`
+	RenterPhone                 string     `json:"renter_phone"`
+	RenterNickname              string     `json:"renter_nickname"`
+	OwnerID                     uint64     `json:"owner_id"`
+	OwnerPhone                  string     `json:"owner_phone"`
+	OwnerNickname               string     `json:"owner_nickname"`
+	OrderRentAmountCent         int64      `json:"order_rent_amount_cent"`
+	OrderDepositAmountCent      int64      `json:"order_deposit_amount_cent"`
+	CheckoutRentAmountCent      int64      `json:"checkout_rent_amount_cent"`
+	CheckoutRenterRefundCent    int64      `json:"checkout_renter_refund_cent"`
+	CheckoutOwnerIncomeCent     int64      `json:"checkout_owner_income_cent"`
+	CheckoutPlatformFeeCent     int64      `json:"checkout_platform_fee_cent"`
+	OwnerWalletIncomeAmountCent int64      `json:"owner_wallet_income_amount_cent"`
+	PaidAmountCent              int64      `json:"paid_amount_cent"`
+	RefundedAmountCent          int64      `json:"refunded_amount_cent"`
+	RefundingAmountCent         int64      `json:"refunding_amount_cent"`
+	FailedRefundAmountCent      int64      `json:"failed_refund_amount_cent"`
+	ChannelNetAmountCent        int64      `json:"channel_net_amount_cent"`
+	PlatformNetAmountCent       int64      `json:"platform_net_amount_cent"`
+	SettlementDiffAmountCent    int64      `json:"settlement_diff_amount_cent"`
+	FinanceStatus               string     `json:"finance_status"`
+	CreatedAt                   time.Time  `json:"created_at"`
+	SettledAt                   *time.Time `json:"settled_at,omitempty"`
 }

backend/internal/modules/adminfinance/repository.go

@@ -1,11 +1,9 @@
 package adminfinance
 
 import (
-	"math"
 	"time"
 
 	"hfb_sys/backend/internal/timeutil"
-	"hfb_sys/backend/pkg/money"
 
 	"gorm.io/gorm"
 )
@@ -71,10 +69,10 @@ func (r *Repository) summary(query DashboardQuery) (*FinanceSummaryDTO, error) {
 
 	var settlement settlementSummaryRow
 	if err := r.db.Table("rental_orders AS ro").
-		Select(`COALESCE(SUM(oc.platform_fee), 0) AS platform_income_amount,
-			COALESCE(SUM(oc.owner_income_amount), 0) AS owner_should_income_amount,
-			COALESCE(SUM(COALESCE(w.owner_wallet_income_amount, 0)), 0) AS owner_wallet_income_amount,
-			COUNT(ro.id) AS settled_order_count`).
+		Select(`COALESCE(SUM(oc.platform_fee_cent), 0) AS platform_income_amount_cent,
+				COALESCE(SUM(oc.owner_income_amount_cent), 0) AS owner_should_income_amount_cent,
+				COALESCE(SUM(COALESCE(w.owner_wallet_income_amount_cent, 0)), 0) AS owner_wallet_income_amount_cent,
+				COUNT(ro.id) AS settled_order_count`).
 		Joins("JOIN order_checkouts AS oc ON oc.order_id = ro.id AND oc.status = 'accepted'").
 		Joins("LEFT JOIN (?) AS w ON w.order_id = ro.id", ownerWalletIncomeSubquery(r.db)).
 		Where("ro.settled_at >= ? AND ro.settled_at <= ?", query.StartDate, query.EndDate).
@@ -94,19 +92,19 @@ func (r *Repository) summary(query DashboardQuery) (*FinanceSummaryDTO, error) {
 	}
 
 	return &FinanceSummaryDTO{
-		TotalFlowAmountCent:     payment.TotalFlowAmountCent,
-		TotalRefundAmountCent:   payment.TotalRefundAmountCent,
-		PendingRefundAmountCent: payment.PendingRefundAmountCent,
-		ChannelNetAmountCent:    payment.TotalFlowAmountCent - payment.TotalRefundAmountCent,
-		PlatformIncomeAmount:    money.Round(settlement.PlatformIncomeAmount),
-		OwnerShouldIncomeAmount: money.Round(settlement.OwnerShouldIncomeAmount),
-		OwnerWalletIncomeAmount: money.Round(settlement.OwnerWalletIncomeAmount),
-		SettlementDiffAmount:    money.Round(settlement.OwnerShouldIncomeAmount - settlement.OwnerWalletIncomeAmount),
-		SuccessfulPayCount:      payment.SuccessfulPayCount,
-		SuccessfulRefundCount:   payment.SuccessfulRefundCount,
-		PendingRefundCount:      payment.PendingRefundCount,
-		SettledOrderCount:       settlement.SettledOrderCount,
-		FinancialExceptionCount: exceptionCount,
+		TotalFlowAmountCent:         payment.TotalFlowAmountCent,
+		TotalRefundAmountCent:       payment.TotalRefundAmountCent,
+		PendingRefundAmountCent:     payment.PendingRefundAmountCent,
+		ChannelNetAmountCent:        payment.TotalFlowAmountCent - payment.TotalRefundAmountCent,
+		PlatformIncomeAmountCent:    settlement.PlatformIncomeAmountCent,
+		OwnerShouldIncomeAmountCent: settlement.OwnerShouldIncomeAmountCent,
+		OwnerWalletIncomeAmountCent: settlement.OwnerWalletIncomeAmountCent,
+		SettlementDiffAmountCent:    settlement.OwnerShouldIncomeAmountCent - settlement.OwnerWalletIncomeAmountCent,
+		SuccessfulPayCount:          payment.SuccessfulPayCount,
+		SuccessfulRefundCount:       payment.SuccessfulRefundCount,
+		PendingRefundCount:          payment.PendingRefundCount,
+		SettledOrderCount:           settlement.SettledOrderCount,
+		FinancialExceptionCount:     exceptionCount,
 	}, nil
 }
 
@@ -130,10 +128,10 @@ func (r *Repository) dailyItems(query DashboardQuery) ([]FinanceDailyDTO, error)
 	settlements := make([]dailySettlementRow, 0)
 	if err := r.db.Table("rental_orders AS ro").
 		Select(`DATE(ro.settled_at) AS date,
-			COALESCE(SUM(oc.platform_fee), 0) AS platform_income_amount,
-			COALESCE(SUM(oc.owner_income_amount), 0) AS owner_should_income_amount,
-			COALESCE(SUM(COALESCE(w.owner_wallet_income_amount, 0)), 0) AS owner_wallet_income_amount,
-			COUNT(ro.id) AS settled_order_count`).
+				COALESCE(SUM(oc.platform_fee_cent), 0) AS platform_income_amount_cent,
+				COALESCE(SUM(oc.owner_income_amount_cent), 0) AS owner_should_income_amount_cent,
+				COALESCE(SUM(COALESCE(w.owner_wallet_income_amount_cent, 0)), 0) AS owner_wallet_income_amount_cent,
+				COUNT(ro.id) AS settled_order_count`).
 		Joins("JOIN order_checkouts AS oc ON oc.order_id = ro.id AND oc.status = 'accepted'").
 		Joins("LEFT JOIN (?) AS w ON w.order_id = ro.id", ownerWalletIncomeSubquery(r.db)).
 		Where("ro.settled_at >= ? AND ro.settled_at <= ?", query.StartDate, query.EndDate).
@@ -162,10 +160,10 @@ func (r *Repository) dailyItems(query DashboardQuery) ([]FinanceDailyDTO, error)
 	for _, row := range settlements {
 		item := itemsByDate[row.Date]
 		item.Date = row.Date
-		item.PlatformIncomeAmount = money.Round(row.PlatformIncomeAmount)
-		item.OwnerShouldIncomeAmount = money.Round(row.OwnerShouldIncomeAmount)
-		item.OwnerWalletIncomeAmount = money.Round(row.OwnerWalletIncomeAmount)
-		item.SettlementDiffAmount = money.Round(row.OwnerShouldIncomeAmount - row.OwnerWalletIncomeAmount)
+		item.PlatformIncomeAmountCent = row.PlatformIncomeAmountCent
+		item.OwnerShouldIncomeAmountCent = row.OwnerShouldIncomeAmountCent
+		item.OwnerWalletIncomeAmountCent = row.OwnerWalletIncomeAmountCent
+		item.SettlementDiffAmountCent = row.OwnerShouldIncomeAmountCent - row.OwnerWalletIncomeAmountCent
 		item.SettledOrderCount = row.SettledOrderCount
 		itemsByDate[row.Date] = item
 	}
@@ -182,23 +180,23 @@ func (r *Repository) financeDetailBaseQuery(query DetailQuery) *gorm.DB {
 		Select(`ro.id AS order_id, ro.order_no, ro.status AS order_status, ro.settlement_status, ro.refund_status,
 			ro.renter_id, COALESCE(ru.phone, '') AS renter_phone, COALESCE(ru.nickname, '') AS renter_nickname,
 			ro.owner_id, COALESCE(ou.phone, '') AS owner_phone, COALESCE(ou.nickname, '') AS owner_nickname,
-			ro.rent_amount AS order_rent_amount, ro.deposit_amount AS order_deposit_amount,
-			COALESCE(oc.rent_amount, 0) AS checkout_rent_amount,
-			COALESCE(oc.renter_refund_amount, 0) AS checkout_renter_refund,
-			COALESCE(oc.owner_income_amount, 0) AS checkout_owner_income,
-			COALESCE(oc.platform_fee, 0) AS checkout_platform_fee,
-			COALESCE(w.owner_wallet_income_amount, 0) AS owner_wallet_income_amount,
-			COALESCE(p.paid_amount_cent, 0) AS paid_amount_cent,
-			COALESCE(p.refunded_amount_cent, 0) AS refunded_amount_cent,
-			COALESCE(p.refunding_amount_cent, 0) AS refunding_amount_cent,
-			COALESCE(p.failed_refund_amount_cent, 0) AS failed_refund_amount_cent,
-			COALESCE(p.paid_amount_cent, 0) - COALESCE(p.refunded_amount_cent, 0) AS channel_net_amount_cent,
-			COALESCE(oc.platform_fee, 0) + ((COALESCE(oc.owner_income_amount, 0) - COALESCE(w.owner_wallet_income_amount, 0))) AS platform_net_amount,
-			COALESCE(oc.owner_income_amount, 0) - COALESCE(w.owner_wallet_income_amount, 0) AS settlement_diff_amount,
-			CASE
-				WHEN COALESCE(p.failed_refund_amount_cent, 0) > 0 THEN 'refund_failed'
-				WHEN COALESCE(p.refunding_amount_cent, 0) > 0 OR ro.refund_status = 'refunding' THEN 'refund_pending'
-				WHEN ABS(COALESCE(oc.owner_income_amount, 0) - COALESCE(w.owner_wallet_income_amount, 0)) >= 0.05 THEN 'settlement_diff'
+				ro.rent_amount_cent AS order_rent_amount_cent, ro.deposit_amount_cent AS order_deposit_amount_cent,
+				COALESCE(oc.rent_amount_cent, 0) AS checkout_rent_amount_cent,
+				COALESCE(oc.renter_refund_amount_cent, 0) AS checkout_renter_refund_cent,
+				COALESCE(oc.owner_income_amount_cent, 0) AS checkout_owner_income_cent,
+				COALESCE(oc.platform_fee_cent, 0) AS checkout_platform_fee_cent,
+				COALESCE(w.owner_wallet_income_amount_cent, 0) AS owner_wallet_income_amount_cent,
+				COALESCE(p.paid_amount_cent, 0) AS paid_amount_cent,
+				COALESCE(p.refunded_amount_cent, 0) AS refunded_amount_cent,
+				COALESCE(p.refunding_amount_cent, 0) AS refunding_amount_cent,
+				COALESCE(p.failed_refund_amount_cent, 0) AS failed_refund_amount_cent,
+				COALESCE(p.paid_amount_cent, 0) - COALESCE(p.refunded_amount_cent, 0) AS channel_net_amount_cent,
+				COALESCE(oc.platform_fee_cent, 0) + ((COALESCE(oc.owner_income_amount_cent, 0) - COALESCE(w.owner_wallet_income_amount_cent, 0))) AS platform_net_amount_cent,
+				COALESCE(oc.owner_income_amount_cent, 0) - COALESCE(w.owner_wallet_income_amount_cent, 0) AS settlement_diff_amount_cent,
+				CASE
+					WHEN COALESCE(p.failed_refund_amount_cent, 0) > 0 THEN 'refund_failed'
+					WHEN COALESCE(p.refunding_amount_cent, 0) > 0 OR ro.refund_status = 'refunding' THEN 'refund_pending'
+					WHEN ABS(COALESCE(oc.owner_income_amount_cent, 0) - COALESCE(w.owner_wallet_income_amount_cent, 0)) >= 5 THEN 'settlement_diff'
 				ELSE 'normal'
 			END AS finance_status,
 			ro.created_at, ro.settled_at`).
@@ -250,7 +248,7 @@ func orderPaymentSubquery(db *gorm.DB) *gorm.DB {
 
 func ownerWalletIncomeSubquery(db *gorm.DB) *gorm.DB {
 	return db.Table("wallet_ledger").
-		Select("order_id, COALESCE(SUM(amount), 0) AS owner_wallet_income_amount").
+		Select("order_id, COALESCE(SUM(amount_cent), 0) AS owner_wallet_income_amount_cent").
 		Where("direction = ? AND biz_type IN ? AND order_id IS NOT NULL", "in", []string{"owner_income", "deposit_compensation"}).
 		Group("order_id")
 }
@@ -283,10 +281,10 @@ type paymentSummaryRow struct {
 }
 
 type settlementSummaryRow struct {
-	PlatformIncomeAmount    float64
-	OwnerShouldIncomeAmount float64
-	OwnerWalletIncomeAmount float64
-	SettledOrderCount       int64
+	PlatformIncomeAmountCent    int64
+	OwnerShouldIncomeAmountCent int64
+	OwnerWalletIncomeAmountCent int64
+	SettledOrderCount           int64
 }
 
 type dailyPaymentRow struct {
@@ -300,81 +298,88 @@ type dailyPaymentRow struct {
 }
 
 type dailySettlementRow struct {
-	Date                    string
-	PlatformIncomeAmount    float64
-	OwnerShouldIncomeAmount float64
-	OwnerWalletIncomeAmount float64
-	SettledOrderCount       int64
+	Date                        string
+	PlatformIncomeAmountCent    int64
+	OwnerShouldIncomeAmountCent int64
+	OwnerWalletIncomeAmountCent int64
+	SettledOrderCount           int64
 }
 
 type financeDetailRow struct {
-	OrderID                 uint64
-	OrderNo                 string
-	OrderStatus             string
-	SettlementStatus        string
-	RefundStatus            string
-	RenterID                uint64
-	RenterPhone             string
-	RenterNickname          string
-	OwnerID                 uint64
-	OwnerPhone              string
-	OwnerNickname           string
-	OrderRentAmount         float64
-	OrderDepositAmount      float64
-	CheckoutRentAmount      float64
-	CheckoutRenterRefund    float64
-	CheckoutOwnerIncome     float64
-	CheckoutPlatformFee     float64
-	OwnerWalletIncomeAmount float64
-	PaidAmountCent          int64
-	RefundedAmountCent      int64
-	RefundingAmountCent     int64
-	FailedRefundAmountCent  int64
-	ChannelNetAmountCent    int64
-	PlatformNetAmount       float64
-	SettlementDiffAmount    float64
-	FinanceStatus           string
-	CreatedAt               time.Time
-	SettledAt               *time.Time
+	OrderID                     uint64
+	OrderNo                     string
+	OrderStatus                 string
+	SettlementStatus            string
+	RefundStatus                string
+	RenterID                    uint64
+	RenterPhone                 string
+	RenterNickname              string
+	OwnerID                     uint64
+	OwnerPhone                  string
+	OwnerNickname               string
+	OrderRentAmountCent         int64
+	OrderDepositAmountCent      int64
+	CheckoutRentAmountCent      int64
+	CheckoutRenterRefundCent    int64
+	CheckoutOwnerIncomeCent     int64
+	CheckoutPlatformFeeCent     int64
+	OwnerWalletIncomeAmountCent int64
+	PaidAmountCent              int64
+	RefundedAmountCent          int64
+	RefundingAmountCent         int64
+	FailedRefundAmountCent      int64
+	ChannelNetAmountCent        int64
+	PlatformNetAmountCent       int64
+	SettlementDiffAmountCent    int64
+	FinanceStatus               string
+	CreatedAt                   time.Time
+	SettledAt                   *time.Time
 }
 
 func (r financeDetailRow) toDTO() FinanceDetailDTO {
-	diff := money.Round(r.SettlementDiffAmount)
+	diff := r.SettlementDiffAmountCent
 	status := r.FinanceStatus
 	if status == "" {
 		status = "normal"
 	}
-	if math.Abs(diff) < 0.05 && status == "settlement_diff" {
+	if absCent(diff) < 5 && status == "settlement_diff" {
 		status = "normal"
 	}
 	return FinanceDetailDTO{
-		OrderID:                 r.OrderID,
-		OrderNo:                 r.OrderNo,
-		OrderStatus:             r.OrderStatus,
-		SettlementStatus:        r.SettlementStatus,
-		RefundStatus:            r.RefundStatus,
-		RenterID:                r.RenterID,
-		RenterPhone:             r.RenterPhone,
-		RenterNickname:          r.RenterNickname,
-		OwnerID:                 r.OwnerID,
-		OwnerPhone:              r.OwnerPhone,
-		OwnerNickname:           r.OwnerNickname,
-		OrderRentAmount:         money.Round(r.OrderRentAmount),
-		OrderDepositAmount:      money.Round(r.OrderDepositAmount),
-		CheckoutRentAmount:      money.Round(r.CheckoutRentAmount),
-		CheckoutRenterRefund:    money.Round(r.CheckoutRenterRefund),
-		CheckoutOwnerIncome:     money.Round(r.CheckoutOwnerIncome),
-		CheckoutPlatformFee:     money.Round(r.CheckoutPlatformFee),
-		OwnerWalletIncomeAmount: money.Round(r.OwnerWalletIncomeAmount),
-		PaidAmountCent:          r.PaidAmountCent,
-		RefundedAmountCent:      r.RefundedAmountCent,
-		RefundingAmountCent:     r.RefundingAmountCent,
-		FailedRefundAmountCent:  r.FailedRefundAmountCent,
-		ChannelNetAmountCent:    r.ChannelNetAmountCent,
-		PlatformNetAmount:       money.Round(r.PlatformNetAmount),
-		SettlementDiffAmount:    diff,
-		FinanceStatus:           status,
-		CreatedAt:               r.CreatedAt,
-		SettledAt:               r.SettledAt,
+		OrderID:                     r.OrderID,
+		OrderNo:                     r.OrderNo,
+		OrderStatus:                 r.OrderStatus,
+		SettlementStatus:            r.SettlementStatus,
+		RefundStatus:                r.RefundStatus,
+		RenterID:                    r.RenterID,
+		RenterPhone:                 r.RenterPhone,
+		RenterNickname:              r.RenterNickname,
+		OwnerID:                     r.OwnerID,
+		OwnerPhone:                  r.OwnerPhone,
+		OwnerNickname:               r.OwnerNickname,
+		OrderRentAmountCent:         r.OrderRentAmountCent,
+		OrderDepositAmountCent:      r.OrderDepositAmountCent,
+		CheckoutRentAmountCent:      r.CheckoutRentAmountCent,
+		CheckoutRenterRefundCent:    r.CheckoutRenterRefundCent,
+		CheckoutOwnerIncomeCent:     r.CheckoutOwnerIncomeCent,
+		CheckoutPlatformFeeCent:     r.CheckoutPlatformFeeCent,
+		OwnerWalletIncomeAmountCent: r.OwnerWalletIncomeAmountCent,
+		PaidAmountCent:              r.PaidAmountCent,
+		RefundedAmountCent:          r.RefundedAmountCent,
+		RefundingAmountCent:         r.RefundingAmountCent,
+		FailedRefundAmountCent:      r.FailedRefundAmountCent,
+		ChannelNetAmountCent:        r.ChannelNetAmountCent,
+		PlatformNetAmountCent:       r.PlatformNetAmountCent,
+		SettlementDiffAmountCent:    diff,
+		FinanceStatus:               status,
+		CreatedAt:                   r.CreatedAt,
+		SettledAt:                   r.SettledAt,
 	}
 }
+
+func absCent(value int64) int64 {
+	if value < 0 {
+		return -value
+	}
+	return value
+}

backend/internal/modules/adminuser/dto.go

@@ -3,30 +3,29 @@ package adminuser
 import "time"
 
 type UserDTO struct {
-	ID                   uint64     `json:"id"`
-	Phone                string     `json:"phone"`
-	Nickname             string     `json:"nickname"`
-	RealnameStatus       string     `json:"realname_status"`
-	RiskStatus           string     `json:"risk_status"`
-	CreditScore          int        `json:"credit_score"`
-	DepositFreeQuota     float64    `json:"deposit_free_quota"`
-	DepositFreeUsed      float64    `json:"deposit_free_used"`
-	DepositFreeRemaining float64    `json:"deposit_free_remaining"`
-	Status               string     `json:"status"`
-	OrderCount           int64      `json:"order_count"`
-	ListingCount         int64      `json:"listing_count"`
-	DisputeCount         int64      `json:"dispute_count"`
-	LastLoginAt          *time.Time `json:"last_login_at"`
-	CreatedAt            time.Time  `json:"created_at"`
-	UpdatedAt            time.Time  `json:"updated_at"`
+	ID                       uint64     `json:"id"`
+	Phone                    string     `json:"phone"`
+	Nickname                 string     `json:"nickname"`
+	RealnameStatus           string     `json:"realname_status"`
+	RiskStatus               string     `json:"risk_status"`
+	CreditScore              int        `json:"credit_score"`
+	DepositFreeQuotaCent     int64      `json:"deposit_free_quota_cent"`
+	DepositFreeUsedCent      int64      `json:"deposit_free_used_cent"`
+	DepositFreeRemainingCent int64      `json:"deposit_free_remaining_cent"`
+	Status                   string     `json:"status"`
+	OrderCount               int64      `json:"order_count"`
+	ListingCount             int64      `json:"listing_count"`
+	DisputeCount             int64      `json:"dispute_count"`
+	LastLoginAt              *time.Time `json:"last_login_at"`
+	CreatedAt                time.Time  `json:"created_at"`
+	UpdatedAt                time.Time  `json:"updated_at"`
 }
 type FreezeRequest struct {
 	Reason string `json:"reason"`
 }
 
 type DepositFreeQuotaRequest struct {
-	AmountCent int64   `json:"amount_cent"`
-	Amount     float64 `json:"amount"`
+	AmountCent int64 `json:"amount_cent"`
 }
 
 type PaginatedResult struct {

backend/internal/modules/adminuser/repository.go

@@ -2,11 +2,9 @@ package adminuser
 
 import (
 	"errors"
-	"math"
 
 	"hfb_sys/backend/internal/auditlog"
 	"hfb_sys/backend/internal/model"
-	"hfb_sys/backend/pkg/money"
 
 	"gorm.io/gorm"
 	"gorm.io/gorm/clause"
@@ -34,11 +32,11 @@ func (r *Repository) List(page, pageSize int) (*PaginatedResult, error) {
 			COALESCE(o.order_count, 0) AS order_count,
 			COALESCE(l.listing_count, 0) AS listing_count,
 			COALESCE(d.dispute_count, 0) AS dispute_count,
-			COALESCE(df.deposit_free_used, 0) AS deposit_free_used`).
+				COALESCE(df.deposit_free_used_cent, 0) AS deposit_free_used_cent`).
 		Joins("LEFT JOIN (SELECT user_id, COUNT(*) AS order_count FROM (SELECT renter_id AS user_id FROM rental_orders UNION ALL SELECT owner_id AS user_id FROM rental_orders) AS order_users GROUP BY user_id) AS o ON o.user_id = u.id").
 		Joins("LEFT JOIN (SELECT owner_id AS user_id, COUNT(*) AS listing_count FROM rental_listings GROUP BY owner_id) AS l ON l.user_id = u.id").
 		Joins("LEFT JOIN (SELECT user_id, COUNT(*) AS dispute_count FROM (SELECT initiator_id AS user_id FROM disputes UNION ALL SELECT target_user_id AS user_id FROM disputes) AS dispute_users GROUP BY user_id) AS d ON d.user_id = u.id").
-		Joins("LEFT JOIN (SELECT renter_id AS user_id, SUM(deposit_waived_amount) AS deposit_free_used FROM rental_orders WHERE status NOT IN ('completed', 'cancelled', 'closed') GROUP BY renter_id) AS df ON df.user_id = u.id").
+		Joins("LEFT JOIN (SELECT renter_id AS user_id, SUM(deposit_waived_amount_cent) AS deposit_free_used_cent FROM rental_orders WHERE status NOT IN ('completed', 'cancelled', 'closed') GROUP BY renter_id) AS df ON df.user_id = u.id").
 		Order("u.id DESC").
 		Offset(offset).Limit(pageSize).
 		Scan(&rows).Error
@@ -65,23 +63,18 @@ func (r *Repository) SetDepositFreeQuota(adminID uint64, userID uint64, req Depo
 	if amountCent < 0 {
 		return nil, ErrInvalidUser
 	}
-	amount := float64(amountCent) / 100
 	err := r.db.Transaction(func(tx *gorm.DB) error {
 		var user model.User
 		if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&user, userID).Error; err != nil {
 			return err
 		}
-		beforeAmount := user.DepositFreeQuota
 		beforeAmountCent := user.DepositFreeQuotaCent
-		user.DepositFreeQuota = amount
 		user.DepositFreeQuotaCent = amountCent
 		if err := tx.Save(&user).Error; err != nil {
 			return err
 		}
 		return appendAuditLog(tx, adminID, "admin_user.set_deposit_free_quota", user.ID, meta, map[string]any{
 			"user_id":            user.ID,
-			"before_amount":      beforeAmount,
-			"after_amount":       amount,
 			"before_amount_cent": beforeAmountCent,
 			"after_amount_cent":  amountCent,
 		})
@@ -127,11 +120,11 @@ func (r *Repository) Find(userID uint64) (*UserDTO, error) {
 			COALESCE(o.order_count, 0) AS order_count,
 			COALESCE(l.listing_count, 0) AS listing_count,
 			COALESCE(d.dispute_count, 0) AS dispute_count,
-			COALESCE(df.deposit_free_used, 0) AS deposit_free_used`).
+				COALESCE(df.deposit_free_used_cent, 0) AS deposit_free_used_cent`).
 		Joins("LEFT JOIN (SELECT user_id, COUNT(*) AS order_count FROM (SELECT renter_id AS user_id FROM rental_orders UNION ALL SELECT owner_id AS user_id FROM rental_orders) AS order_users GROUP BY user_id) AS o ON o.user_id = u.id").
 		Joins("LEFT JOIN (SELECT owner_id AS user_id, COUNT(*) AS listing_count FROM rental_listings GROUP BY owner_id) AS l ON l.user_id = u.id").
 		Joins("LEFT JOIN (SELECT user_id, COUNT(*) AS dispute_count FROM (SELECT initiator_id AS user_id FROM disputes UNION ALL SELECT target_user_id AS user_id FROM disputes) AS dispute_users GROUP BY user_id) AS d ON d.user_id = u.id").
-		Joins("LEFT JOIN (SELECT renter_id AS user_id, SUM(deposit_waived_amount) AS deposit_free_used FROM rental_orders WHERE status NOT IN ('completed', 'cancelled', 'closed') GROUP BY renter_id) AS df ON df.user_id = u.id").
+		Joins("LEFT JOIN (SELECT renter_id AS user_id, SUM(deposit_waived_amount_cent) AS deposit_free_used_cent FROM rental_orders WHERE status NOT IN ('completed', 'cancelled', 'closed') GROUP BY renter_id) AS df ON df.user_id = u.id").
 		Where("u.id = ?", userID).
 		First(&row).Error
 	if err != nil {
@@ -143,46 +136,39 @@ func (r *Repository) Find(userID uint64) (*UserDTO, error) {
 
 type userRow struct {
 	model.User
-	OrderCount      int64
-	ListingCount    int64
-	DisputeCount    int64
-	DepositFreeUsed float64
+	OrderCount          int64
+	ListingCount        int64
+	DisputeCount        int64
+	DepositFreeUsedCent int64
 }
 
 func (row userRow) toDTO() UserDTO {
-	remaining := roundMoney(row.DepositFreeQuota - row.DepositFreeUsed)
+	remaining := row.DepositFreeQuotaCent - row.DepositFreeUsedCent
 	if remaining < 0 {
 		remaining = 0
 	}
 	return UserDTO{
-		ID:                   row.ID,
-		Phone:                row.Phone,
-		Nickname:             row.Nickname,
-		RealnameStatus:       row.RealnameStatus,
-		RiskStatus:           row.RiskStatus,
-		CreditScore:          row.CreditScore,
-		DepositFreeQuota:     row.DepositFreeQuota,
-		DepositFreeUsed:      roundMoney(row.DepositFreeUsed),
-		DepositFreeRemaining: remaining,
-		Status:               row.Status,
-		OrderCount:           row.OrderCount,
-		ListingCount:         row.ListingCount,
-		DisputeCount:         row.DisputeCount,
-		LastLoginAt:          row.LastLoginAt,
-		CreatedAt:            row.CreatedAt,
-		UpdatedAt:            row.UpdatedAt,
+		ID:                       row.ID,
+		Phone:                    row.Phone,
+		Nickname:                 row.Nickname,
+		RealnameStatus:           row.RealnameStatus,
+		RiskStatus:               row.RiskStatus,
+		CreditScore:              row.CreditScore,
+		DepositFreeQuotaCent:     row.DepositFreeQuotaCent,
+		DepositFreeUsedCent:      row.DepositFreeUsedCent,
+		DepositFreeRemainingCent: remaining,
+		Status:                   row.Status,
+		OrderCount:               row.OrderCount,
+		ListingCount:             row.ListingCount,
+		DisputeCount:             row.DisputeCount,
+		LastLoginAt:              row.LastLoginAt,
+		CreatedAt:                row.CreatedAt,
+		UpdatedAt:                row.UpdatedAt,
 	}
 }
 
-func roundMoney(value float64) float64 {
-	return money.Round(value)
-}
-
 func depositFreeQuotaAmountCent(req DepositFreeQuotaRequest) int64 {
-	if req.AmountCent != 0 {
-		return req.AmountCent
-	}
-	return int64(math.Round(req.Amount * 100))
+	return req.AmountCent
 }
 
 func appendAuditLog(tx *gorm.DB, actorID uint64, action string, bizID uint64, meta AuditMeta, detail map[string]any) error {

backend/internal/modules/adminuser/repository_test.go

@@ -9,18 +9,13 @@ func TestDepositFreeQuotaAmountCent(t *testing.T) {
 		want int64
 	}{
 		{
-			name: "优先使用分字段",
-			req:  DepositFreeQuotaRequest{AmountCent: 1234, Amount: 99},
-			want: 1234,
-		},
-		{
-			name: "缺少分字段时回退元字段",
-			req:  DepositFreeQuotaRequest{Amount: 12.34},
+			name: "使用分字段",
+			req:  DepositFreeQuotaRequest{AmountCent: 1234},
 			want: 1234,
 		},
 		{
 			name: "负分拒绝",
-			req:  DepositFreeQuotaRequest{AmountCent: -1, Amount: 12.34},
+			req:  DepositFreeQuotaRequest{AmountCent: -1},
 			want: -1,
 		},
 	}

backend/internal/modules/adminuser/service.go

@@ -46,7 +46,7 @@ func (s *Service) SetDepositFreeQuota(adminID uint64, userID uint64, req Deposit
 	if s.repo == nil {
 		return nil, ErrDependencyUnavailable
 	}
-	if userID == 0 || req.Amount < 0 {
+	if userID == 0 || req.AmountCent < 0 {
 		return nil, ErrInvalidUser
 	}
 	return s.repo.SetDepositFreeQuota(adminID, userID, req, meta)

backend/internal/modules/dispute/dto.go

@@ -35,9 +35,9 @@ type CreateRequest struct {
 }
 
 type ArbitrateRequest struct {
-	Result string  `json:"result" binding:"required"`
-	Remark string  `json:"remark" binding:"required"`
-	Amount float64 `json:"amount"`
+	Result     string `json:"result" binding:"required"`
+	Remark     string `json:"remark" binding:"required"`
+	AmountCent int64  `json:"amount_cent"`
 }
 type AuditMeta = auditlog.Meta
 

backend/internal/modules/dispute/repository.go

@@ -4,7 +4,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"math"
 	"time"
 
 	"hfb_sys/backend/internal/auditlog"
@@ -249,9 +248,8 @@ func (r *Repository) Arbitrate(adminID uint64, id uint64, req ArbitrateRequest,
 		if err := wallet.AppendEntries(tx, settlement.Entries...); err != nil {
 			return err
 		}
-		if settlement.RenterRefundAmount > 0 {
-			refundCent := int64(math.Round(settlement.RenterRefundAmount * 100))
-			action, err := r.prepareRefund(&order, refundCent, "arbitration_refund", "仲裁退款原路退还")
+		if settlement.RenterRefundAmountCent > 0 {
+			action, err := r.prepareRefund(&order, settlement.RenterRefundAmountCent, "arbitration_refund", "仲裁退款原路退还")
 			if err != nil {
 				return err
 			}
@@ -281,25 +279,25 @@ func (r *Repository) Arbitrate(adminID uint64, id uint64, req ArbitrateRequest,
 		}
 		disputeID := row.ID
 		if err := appendAuditLog(tx, adminID, "dispute.arbitrate", "dispute", row.ID, meta, map[string]any{
-			"dispute_id":               row.ID,
-			"order_id":                 order.ID,
-			"order_no":                 order.OrderNo,
-			"result":                   req.Result,
-			"remark":                   req.Remark,
-			"input_amount":             req.Amount,
-			"renter_refund_amount":     settlement.RenterRefundAmount,
-			"owner_income_amount":      settlement.OwnerIncomeAmount,
-			"deposit_deduct_amount":    settlement.DepositDeductAmount,
-			"before_order_status":      beforeOrderStatus,
-			"after_order_status":       order.Status,
-			"before_handoff_status":    beforeHandoffStatus,
-			"after_handoff_status":     order.HandoffStatus,
-			"before_settlement_status": beforeSettlementStatus,
-			"after_settlement_status":  order.SettlementStatus,
-			"before_listing_status":    beforeListingStatus,
-			"after_listing_status":     listing.Status,
-			"before_account_status":    beforeAccountStatus,
-			"after_account_status":     account.Status,
+			"dispute_id":                 row.ID,
+			"order_id":                   order.ID,
+			"order_no":                   order.OrderNo,
+			"result":                     req.Result,
+			"remark":                     req.Remark,
+			"input_amount_cent":          req.AmountCent,
+			"renter_refund_amount_cent":  settlement.RenterRefundAmountCent,
+			"owner_income_amount_cent":   settlement.OwnerIncomeAmountCent,
+			"deposit_deduct_amount_cent": settlement.DepositDeductAmountCent,
+			"before_order_status":        beforeOrderStatus,
+			"after_order_status":         order.Status,
+			"before_handoff_status":      beforeHandoffStatus,
+			"after_handoff_status":       order.HandoffStatus,
+			"before_settlement_status":   beforeSettlementStatus,
+			"after_settlement_status":    order.SettlementStatus,
+			"before_listing_status":      beforeListingStatus,
+			"after_listing_status":       listing.Status,
+			"before_account_status":      beforeAccountStatus,
+			"after_account_status":       account.Status,
 		}); err != nil {
 			return err
 		}
@@ -338,36 +336,29 @@ func (r *Repository) Arbitrate(adminID uint64, id uint64, req ArbitrateRequest,
 }
 
 type arbitrationSettlement struct {
-	Entries             []wallet.Entry
-	RenterRefundAmount  float64
-	OwnerIncomeAmount   float64
-	DepositDeductAmount float64
+	Entries                 []wallet.Entry
+	RenterRefundAmountCent  int64
+	OwnerIncomeAmountCent   int64
+	DepositDeductAmountCent int64
 }
 
-func buildArbitrationSettlement(order model.RentalOrder, req ArbitrateRequest, renterFrozenBalance float64) (arbitrationSettlement, error) {
-	rentAmount := float64(order.RentAmountCent) / 100
-	if rentAmount <= 0 {
-		rentAmount = order.RentAmount
+func buildArbitrationSettlement(order model.RentalOrder, req ArbitrateRequest, renterFrozenBalanceCent int64) (arbitrationSettlement, error) {
+	rentAmountCent := order.RentAmountCent
+	depositAmountCent := order.DepositAmountCent
+	ownerRentAmountCent := order.OwnerRentAmountCent
+	if ownerRentAmountCent <= 0 || ownerRentAmountCent > rentAmountCent {
+		ownerRentAmountCent = rentAmountCent
 	}
-	depositAmount := float64(order.DepositAmountCent) / 100
-	if depositAmount <= 0 {
-		depositAmount = order.DepositAmount
-	}
-	ownerRentAmount := float64(order.OwnerRentAmountCent) / 100
-	if ownerRentAmount <= 0 || ownerRentAmount > rentAmount {
-		ownerRentAmount = rentAmount
-	}
-	total := roundMoney(rentAmount + depositAmount)
-	ownerRentAmount = roundMoney(ownerRentAmount)
+	totalCent := rentAmountCent + depositAmountCent
 	settlement := arbitrationSettlement{}
 	orderID := order.ID
-	releaseFrozenAmount := minMoney(total, roundMoney(renterFrozenBalance))
-	if releaseFrozenAmount > 0 {
+	releaseFrozenAmountCent := money.MinCent(totalCent, renterFrozenBalanceCent)
+	if releaseFrozenAmountCent > 0 {
 		settlement.Entries = append(settlement.Entries, wallet.Entry{
 			UserID:      order.RenterID,
 			OrderID:     &orderID,
 			Direction:   "out",
-			AmountCent:  int64(math.Round(releaseFrozenAmount * 100)),
+			AmountCent:  releaseFrozenAmountCent,
 			BalanceType: "frozen",
 			BizType:     "arbitration_release_frozen",
 			BizNo:       order.OrderNo,
@@ -375,22 +366,22 @@ func buildArbitrationSettlement(order model.RentalOrder, req ArbitrateRequest, r
 		})
 	}
 
-	addRenterRefund := func(amount float64, remark string) {
-		if amount <= 0 {
+	addRenterRefund := func(amountCent int64, remark string) {
+		if amountCent <= 0 {
 			return
 		}
-		settlement.RenterRefundAmount += amount
+		settlement.RenterRefundAmountCent += amountCent
 	}
-	addOwnerIncome := func(amount float64, remark string) {
-		if amount <= 0 {
+	addOwnerIncome := func(amountCent int64, remark string) {
+		if amountCent <= 0 {
 			return
 		}
-		settlement.OwnerIncomeAmount += amount
+		settlement.OwnerIncomeAmountCent += amountCent
 		settlement.Entries = append(settlement.Entries, wallet.Entry{
 			UserID:      order.OwnerID,
 			OrderID:     &orderID,
 			Direction:   "in",
-			AmountCent:  int64(math.Round(amount * 100)),
+			AmountCent:  amountCent,
 			BalanceType: "available",
 			BizType:     "arbitration_owner_income",
 			BizNo:       order.OrderNo,
@@ -400,28 +391,27 @@ func buildArbitrationSettlement(order model.RentalOrder, req ArbitrateRequest, r
 
 	switch req.Result {
 	case "full_refund":
-		addRenterRefund(total, "仲裁全额退款")
+		addRenterRefund(totalCent, "仲裁全额退款")
 	case "partial_refund":
-		req.Amount = roundMoney(req.Amount)
-		if req.Amount <= 0 || req.Amount > total {
+		if req.AmountCent <= 0 || req.AmountCent > totalCent {
 			return settlement, ErrInvalidDispute
 		}
-		addRenterRefund(req.Amount, "仲裁部分退款")
-		addOwnerIncome(minMoney(total-req.Amount, ownerRentAmount+depositAmount), "仲裁剩余金额结算给号主")
+		addRenterRefund(req.AmountCent, "仲裁部分退款")
+		addOwnerIncome(money.MinCent(totalCent-req.AmountCent, ownerRentAmountCent+depositAmountCent), "仲裁剩余金额结算给号主")
 	case "release_deposit":
-		addOwnerIncome(ownerRentAmount, "仲裁确认订单金额结算给号主")
-		addRenterRefund(depositAmount, "仲裁释放押金给租客")
+		addOwnerIncome(ownerRentAmountCent, "仲裁确认订单金额结算给号主")
+		addRenterRefund(depositAmountCent, "仲裁释放押金给租客")
 	case "deduct_deposit", "compensate_owner":
-		deductAmount := roundMoney(req.Amount)
-		if deductAmount <= 0 {
-			deductAmount = depositAmount
+		deductAmountCent := req.AmountCent
+		if deductAmountCent <= 0 {
+			deductAmountCent = depositAmountCent
 		}
-		if deductAmount > depositAmount {
+		if deductAmountCent > depositAmountCent {
 			return settlement, ErrInvalidDispute
 		}
-		settlement.DepositDeductAmount = deductAmount
-		addOwnerIncome(ownerRentAmount+deductAmount, "仲裁订单金额及押金赔付结算给号主")
-		addRenterRefund(depositAmount-deductAmount, "仲裁退回剩余押金给租客")
+		settlement.DepositDeductAmountCent = deductAmountCent
+		addOwnerIncome(ownerRentAmountCent+deductAmountCent, "仲裁订单金额及押金赔付结算给号主")
+		addRenterRefund(depositAmountCent-deductAmountCent, "仲裁退回剩余押金给租客")
 	case "order_close":
 		// Only release frozen funds. No available-balance settlement happens in development mode.
 	case "mark_abnormal":
@@ -457,7 +447,7 @@ func (r *Repository) startRefundBestEffort(action *refundAction) {
 	_, _ = r.refundFunc(action.OrderID, action.RefundAmountCent, action.BizType, action.Remark)
 }
 
-func renterFrozenBalance(tx *gorm.DB, renterID uint64) (float64, error) {
+func renterFrozenBalance(tx *gorm.DB, renterID uint64) (int64, error) {
 	var account model.WalletAccount
 	err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).
 		Where("user_id = ?", renterID).
@@ -468,17 +458,7 @@ func renterFrozenBalance(tx *gorm.DB, renterID uint64) (float64, error) {
 	if err != nil {
 		return 0, err
 	}
-	return account.FrozenBalance, nil
-}
-
-// minMoney 返回较小金额（角精度）
-func minMoney(a float64, b float64) float64 {
-	return money.Min(a, b)
-}
-
-// roundMoney 使用统一的角精度（0.1元）
-func roundMoney(value float64) float64 {
-	return money.Round(value)
+	return account.FrozenBalanceCent, nil
 }
 
 func (r *Repository) baseQuery() *gorm.DB {
@@ -550,14 +530,14 @@ func buildArbitrationHandoffContent(req ArbitrateRequest, settlement arbitration
 	if req.Remark != "" {
 		content += "\n处理说明：" + req.Remark
 	}
-	if settlement.RenterRefundAmount > 0 {
-		content += fmt.Sprintf("\n退款给租客：¥%.2f", settlement.RenterRefundAmount)
+	if settlement.RenterRefundAmountCent > 0 {
+		content += "\n退款给租客：" + money.FormatWithSymbol(settlement.RenterRefundAmountCent)
 	}
-	if settlement.OwnerIncomeAmount > 0 {
-		content += fmt.Sprintf("\n结算给号主：¥%.2f", settlement.OwnerIncomeAmount)
+	if settlement.OwnerIncomeAmountCent > 0 {
+		content += "\n结算给号主：" + money.FormatWithSymbol(settlement.OwnerIncomeAmountCent)
 	}
-	if settlement.DepositDeductAmount > 0 {
-		content += fmt.Sprintf("\n押金扣除：¥%.2f", settlement.DepositDeductAmount)
+	if settlement.DepositDeductAmountCent > 0 {
+		content += "\n押金扣除：" + money.FormatWithSymbol(settlement.DepositDeductAmountCent)
 	}
 	return content
 }

backend/internal/modules/dispute/repository_test.go

@@ -31,11 +31,11 @@ func TestBuildArbitrationSettlementSkipsFrozenReleaseWhenNoFrozenBalance(t *test
 			t.Fatalf("不应在无冻结余额时生成解冻流水: %+v", entry)
 		}
 	}
-	if settlement.OwnerIncomeAmount != 180 {
-		t.Fatalf("OwnerIncomeAmount = %.1f, want 180.0", settlement.OwnerIncomeAmount)
+	if settlement.OwnerIncomeAmountCent != 18000 {
+		t.Fatalf("OwnerIncomeAmountCent = %d, want 18000", settlement.OwnerIncomeAmountCent)
 	}
-	if settlement.RenterRefundAmount != 100 {
-		t.Fatalf("RenterRefundAmount = %.1f, want 100.0", settlement.RenterRefundAmount)
+	if settlement.RenterRefundAmountCent != 10000 {
+		t.Fatalf("RenterRefundAmountCent = %d, want 10000", settlement.RenterRefundAmountCent)
 	}
 	for _, entry := range settlement.Entries {
 		if entry.UserID == order.RenterID && entry.BizType == "arbitration_renter_refund" {
@@ -58,7 +58,7 @@ func TestBuildArbitrationSettlementLimitsFrozenReleaseToExistingBalance(t *testi
 	settlement, err := buildArbitrationSettlement(order, ArbitrateRequest{
 		Result: "order_close",
 		Remark: "测试裁决",
-	}, 120)
+	}, 12000)
 	if err != nil {
 		t.Fatalf("buildArbitrationSettlement() error = %v", err)
 	}
@@ -83,15 +83,15 @@ func TestBuildArbitrationHandoffContent(t *testing.T) {
 		Result: "partial_refund",
 		Remark: "账号异常，退还部分租金。",
 	}, arbitrationSettlement{
-		RenterRefundAmount: 80,
-		OwnerIncomeAmount:  120,
+		RenterRefundAmountCent: 8000,
+		OwnerIncomeAmountCent:  12000,
 	})
 
 	wantParts := []string{
 		"客服仲裁结果：部分退款",
 		"处理说明：账号异常，退还部分租金。",
-		"退款给租客：¥80.00",
-		"结算给号主：¥120.00",
+		"退款给租客：¥80.0",
+		"结算给号主：¥120.0",
 	}
 	for _, part := range wantParts {
 		if !strings.Contains(content, part) {

backend/internal/modules/listing/dto.go

@@ -9,45 +9,45 @@ import (
 )
 
 type ListingDTO struct {
-	ID             uint64         `json:"id"`
-	ListingNo      string         `json:"listing_no"`
-	AccountID      uint64         `json:"account_id"`
-	OwnerID        uint64         `json:"owner_id"`
-	OwnerPhone     string         `json:"owner_phone,omitempty"`
-	OwnerNickname  string         `json:"owner_nickname,omitempty"`
-	Title          string         `json:"title"`
-	Description    string         `json:"description"`
-	GameName       string         `json:"game_name"`
-	ServerRegion   string         `json:"server_region"`
-	LoginPlatform  string         `json:"login_platform"`
-	RankLevel      string         `json:"rank_level"`
-	HafCoinAmount  int64          `json:"haf_coin_amount"`
-	AssetSummary   map[string]any `json:"asset_summary,omitempty"`
-	ScreenshotURLS []string       `json:"screenshot_urls"`
-	CoverURL       string         `json:"cover_url"`
-	PriceCent      int64          `json:"price_cent"`
-	DepositAmountCent int64       `json:"deposit_amount_cent"`
-	IsAccelerated  bool           `json:"is_accelerated_sale"`
-	InTransaction  bool           `json:"in_transaction"`
-	Status         string         `json:"status"`
-	ReviewStatus   string         `json:"review_status"`
-	ReviewReason   string         `json:"review_reason"`
-	PublishedAt    *time.Time     `json:"published_at"`
-	CreatedAt      time.Time      `json:"created_at"`
-	UpdatedAt      time.Time      `json:"updated_at"`
+	ID                uint64         `json:"id"`
+	ListingNo         string         `json:"listing_no"`
+	AccountID         uint64         `json:"account_id"`
+	OwnerID           uint64         `json:"owner_id"`
+	OwnerPhone        string         `json:"owner_phone,omitempty"`
+	OwnerNickname     string         `json:"owner_nickname,omitempty"`
+	Title             string         `json:"title"`
+	Description       string         `json:"description"`
+	GameName          string         `json:"game_name"`
+	ServerRegion      string         `json:"server_region"`
+	LoginPlatform     string         `json:"login_platform"`
+	RankLevel         string         `json:"rank_level"`
+	HafCoinAmount     int64          `json:"haf_coin_amount"`
+	AssetSummary      map[string]any `json:"asset_summary,omitempty"`
+	ScreenshotURLS    []string       `json:"screenshot_urls"`
+	CoverURL          string         `json:"cover_url"`
+	PriceCent         int64          `json:"price_cent"`
+	DepositAmountCent int64          `json:"deposit_amount_cent"`
+	IsAccelerated     bool           `json:"is_accelerated_sale"`
+	InTransaction     bool           `json:"in_transaction"`
+	Status            string         `json:"status"`
+	ReviewStatus      string         `json:"review_status"`
+	ReviewReason      string         `json:"review_reason"`
+	PublishedAt       *time.Time     `json:"published_at"`
+	CreatedAt         time.Time      `json:"created_at"`
+	UpdatedAt         time.Time      `json:"updated_at"`
 }
 
 type CreateRequest struct {
-	Title          string         `json:"title" binding:"required"`
-	Description    string         `json:"description"`
-	ServerRegion   string         `json:"server_region" binding:"required"`
-	LoginPlatform  string         `json:"login_platform"`
-	RankLevel      string         `json:"rank_level"`
-	HafCoinAmount  int64          `json:"haf_coin_amount"`
-	AssetSummary   map[string]any `json:"asset_summary"`
-	ScreenshotURLS []string       `json:"screenshot_urls"`
-	Price          float64        `json:"price"`
-	DepositAmount  float64        `json:"deposit_amount"`
+	Title             string         `json:"title" binding:"required"`
+	Description       string         `json:"description"`
+	ServerRegion      string         `json:"server_region" binding:"required"`
+	LoginPlatform     string         `json:"login_platform"`
+	RankLevel         string         `json:"rank_level"`
+	HafCoinAmount     int64          `json:"haf_coin_amount"`
+	AssetSummary      map[string]any `json:"asset_summary"`
+	ScreenshotURLS    []string       `json:"screenshot_urls"`
+	PriceCent         int64          `json:"price_cent"`
+	DepositAmountCent int64          `json:"deposit_amount_cent"`
 
 	AgreedVirtualAssetSale bool `json:"agreed_virtual_asset_sale"`
 	AgreedSellerAgreement  bool `json:"agreed_seller_agreement"`
@@ -60,9 +60,9 @@ type ReviewRequest struct {
 }
 
 type AdminPriceAdjustRequest struct {
-	BuyerRatio      float64 `json:"buyer_ratio"`
-	BuyerTotalPrice float64 `json:"buyer_total_price"`
-	Reason          string  `json:"reason"`
+	BuyerRatio          float64 `json:"buyer_ratio"`
+	BuyerTotalPriceCent int64   `json:"buyer_total_price_cent"`
+	Reason              string  `json:"reason"`
 }
 
 type AdminListQuery struct {

backend/internal/modules/listing/repository.go

@@ -79,16 +79,13 @@ func (r *Repository) Create(ownerID uint64, req CreateRequest, reviewRequired bo
 		if err := tx.Create(&account).Error; err != nil {
 			return err
 		}
-		price := normalizedListingPrice(req)
-		depositAmount := roundMoney(req.DepositAmount)
+		priceCent := normalizedListingPriceCent(req)
 		listing := model.RentalListing{
 			ListingNo:         listingNo,
 			AccountID:         account.ID,
 			OwnerID:           ownerID,
-			Price:             price,
-			PriceCent:         int64(math.Round(price * 100)),
-			DepositAmount:     depositAmount,
-			DepositAmountCent: int64(math.Round(depositAmount * 100)),
+			PriceCent:         priceCent,
+			DepositAmountCent: req.DepositAmountCent,
 			Status:            listingStatus,
 			ReviewStatus:      reviewStatus,
 			PublishedAt:       publishedAt,
@@ -149,16 +146,13 @@ func (r *Repository) CreateFromExternalUpload(upload externalUploadCreate, req C
 		if err := tx.Create(&account).Error; err != nil {
 			return err
 		}
-		price := normalizedListingPrice(req)
-		depositAmount := roundMoney(req.DepositAmount)
+		priceCent := normalizedListingPriceCent(req)
 		listing := model.RentalListing{
 			ListingNo:         listingNo,
 			AccountID:         account.ID,
 			OwnerID:           owner.ID,
-			Price:             price,
-			PriceCent:         int64(math.Round(price * 100)),
-			DepositAmount:     depositAmount,
-			DepositAmountCent: int64(math.Round(depositAmount * 100)),
+			PriceCent:         priceCent,
+			DepositAmountCent: req.DepositAmountCent,
 			Status:            "draft",
 			ReviewStatus:      "pending",
 		}
@@ -216,9 +210,8 @@ func (r *Repository) Update(ownerID uint64, listingID uint64, req UpdateRequest,
 		}
 		account.ScreenshotURLS = screenshots
 
-		price := normalizedListingPrice(req)
-		listing.Price = price
-		listing.DepositAmount = roundMoney(req.DepositAmount)
+		listing.PriceCent = normalizedListingPriceCent(req)
+		listing.DepositAmountCent = req.DepositAmountCent
 		listingStatus, reviewStatus, publishedAt := initialPublishState(reviewRequired)
 		listing.Status = listingStatus
 		listing.ReviewStatus = reviewStatus
@@ -521,7 +514,7 @@ func (r *Repository) AdjustReviewPrice(adminID uint64, listingID uint64, req Adm
 		}
 		sellerTotalPrice := readSummaryNumber(breakdown["seller_total_price"])
 		if sellerTotalPrice <= 0 {
-			sellerTotalPrice = math.Max(0, listing.Price-consumablePrice)
+			sellerTotalPrice = math.Max(0, centToYuan(listing.PriceCent)-consumablePrice)
 		}
 		sellerCoinBasePrice := readSummaryNumber(breakdown["seller_coin_base_price"])
 		if sellerCoinBasePrice <= 0 {
@@ -536,13 +529,13 @@ func (r *Repository) AdjustReviewPrice(adminID uint64, listingID uint64, req Adm
 			return ErrInvalidPrice
 		}
 
-		beforePrice := listing.Price
+		beforePriceCent := listing.PriceCent
 		beforeRatio := readSummaryNumber(breakdown["buyer_ratio"])
-		if beforeRatio <= 0 && listing.Price > consumablePrice {
-			beforeRatio = roundRatio(coinWan / (listing.Price - consumablePrice))
+		if beforeRatio <= 0 && centToYuan(listing.PriceCent) > consumablePrice {
+			beforeRatio = roundRatio(coinWan / (centToYuan(listing.PriceCent) - consumablePrice))
 		}
 
-		listing.Price = buyerTotalPrice
+		listing.PriceCent = yuanToCent(buyerTotalPrice)
 		summary["publish_ratio"] = buyerRatio
 		breakdown["seller_coin_base_price"] = roundMoney(sellerCoinBasePrice)
 		breakdown["seller_total_price"] = roundMoney(sellerTotalPrice)
@@ -572,8 +565,8 @@ func (r *Repository) AdjustReviewPrice(adminID uint64, listingID uint64, req Adm
 			"listing_id":         listing.ID,
 			"account_id":         account.ID,
 			"owner_id":           listing.OwnerID,
-			"before_price":       beforePrice,
-			"after_price":        listing.Price,
+			"before_price_cent":  beforePriceCent,
+			"after_price_cent":   listing.PriceCent,
 			"before_buyer_ratio": beforeRatio,
 			"after_buyer_ratio":  buyerRatio,
 			"platform_markup":    breakdown["platform_markup_amount"],
@@ -783,9 +776,9 @@ func canListPublicWithSQL(query PublicListQuery) bool {
 func applyPublicSQLSort(db *gorm.DB, sortKey string) *gorm.DB {
 	switch sortKey {
 	case "priceAsc":
-		return db.Order("l.price ASC, l.published_at DESC, l.id DESC")
+		return db.Order("l.price_cent ASC, l.published_at DESC, l.id DESC")
 	case "priceDesc":
-		return db.Order("l.price DESC, l.published_at DESC, l.id DESC")
+		return db.Order("l.price_cent DESC, l.published_at DESC, l.id DESC")
 	case "coinDesc":
 		return db.Order("a.haf_coin_amount DESC, l.published_at DESC, l.id DESC")
 	default:
@@ -1384,16 +1377,16 @@ func rowsToDTO(rows []listingRow) []ListingDTO {
 	return items
 }
 
-func normalizedListingPrice(req CreateRequest) float64 {
+func normalizedListingPriceCent(req CreateRequest) int64 {
 	if req.AssetSummary != nil {
 		if breakdown, ok := req.AssetSummary["price_breakdown"].(map[string]any); ok {
 			buyerPrice := readSummaryNumber(breakdown["buyer_total_price"])
 			if buyerPrice > 0 {
-				return roundMoney(buyerPrice)
+				return yuanToCent(buyerPrice)
 			}
 		}
 	}
-	return roundMoney(req.Price)
+	return req.PriceCent
 }
 
 func publicListings(items []ListingDTO) []ListingDTO {
@@ -1620,8 +1613,8 @@ func ensurePriceBreakdown(summary map[string]any) map[string]any {
 }
 
 func calculateAdminAdjustedPrice(req AdminPriceAdjustRequest, coinWan float64, consumablePrice float64) (float64, float64, float64) {
-	if req.BuyerTotalPrice > 0 {
-		buyerTotalPrice := roundMoney(req.BuyerTotalPrice)
+	if req.BuyerTotalPriceCent > 0 {
+		buyerTotalPrice := roundMoney(centToYuan(req.BuyerTotalPriceCent))
 		buyerCoinBasePrice := roundMoney(buyerTotalPrice - consumablePrice)
 		if buyerCoinBasePrice <= 0 || coinWan <= 0 {
 			return 0, 0, 0
@@ -1643,6 +1636,14 @@ func roundRatio(value float64) float64 {
 	return math.Round(value*10) / 10
 }
 
+func yuanToCent(value float64) int64 {
+	return int64(math.Round(roundMoney(value) * 100))
+}
+
+func centToYuan(value int64) float64 {
+	return float64(value) / 100
+}
+
 func cleanScreenshotURLs(urls []string) []string {
 	cleaned := make([]string, 0, len(urls))
 	seen := make(map[string]struct{}, len(urls))

backend/internal/modules/listing/service.go

@@ -252,7 +252,7 @@ func (s *Service) AdjustReviewPrice(adminID uint64, id uint64, req AdminPriceAdj
 	if s.repo == nil {
 		return nil, ErrDependencyUnavailable
 	}
-	if req.BuyerRatio <= 0 && req.BuyerTotalPrice <= 0 {
+	if req.BuyerRatio <= 0 && req.BuyerTotalPriceCent <= 0 {
 		return nil, ErrInvalidPrice
 	}
 	return s.repo.AdjustReviewPrice(adminID, id, req, meta)
@@ -328,13 +328,13 @@ func validateRequest(req CreateRequest, rules publishRules) error {
 	if strings.TrimSpace(req.ServerRegion) == "" {
 		return ErrMissingServerRegion
 	}
-	if normalizedListingPrice(req) <= 0 {
+	if normalizedListingPriceCent(req) <= 0 {
 		return ErrInvalidPrice
 	}
-	if req.DepositAmount < 0 {
+	if req.DepositAmountCent < 0 {
 		return ErrInvalidDeposit
 	}
-	if consumables := consumableValue(req.AssetSummary); consumables > 0 && req.DepositAmount <= consumables {
+	if consumables := consumableValue(req.AssetSummary); consumables > 0 && req.DepositAmountCent <= yuanToCent(consumables) {
 		return ErrDepositTooLow
 	}
 	if req.HafCoinAmount < 0 {
@@ -525,16 +525,16 @@ func externalAccountToCreateRequest(uploaderName string, uploadTime int64, item
 		},
 	}
 	return CreateRequest{
-		Title:          externalUploadTitle(item, insurance, hafCoinM),
-		Description:    "开放接口自动上传，等待后台审核。",
-		ServerRegion:   serverRegionFromLoginMethod(item.LoginMethod),
-		LoginPlatform:  strings.TrimSpace(item.LoginMethod),
-		RankLevel:      strings.TrimSpace(item.Rank),
-		HafCoinAmount:  int64(math.Round(hafCoinM * 1000000)),
-		AssetSummary:   assetSummary,
-		ScreenshotURLS: []string{defaultUploadScreenshot},
-		Price:          price,
-		DepositAmount:  item.Deposit,
+		Title:             externalUploadTitle(item, insurance, hafCoinM),
+		Description:       "开放接口自动上传，等待后台审核。",
+		ServerRegion:      serverRegionFromLoginMethod(item.LoginMethod),
+		LoginPlatform:     strings.TrimSpace(item.LoginMethod),
+		RankLevel:         strings.TrimSpace(item.Rank),
+		HafCoinAmount:     int64(math.Round(hafCoinM * 1000000)),
+		AssetSummary:      assetSummary,
+		ScreenshotURLS:    []string{defaultUploadScreenshot},
+		PriceCent:         yuanToCent(price),
+		DepositAmountCent: yuanToCent(item.Deposit),
 	}
 }
 

backend/internal/modules/listing/service_test.go

@@ -27,7 +27,7 @@ func TestCalculateAdminAdjustedPriceByRatio(t *testing.T) {
 }
 
 func TestCalculateAdminAdjustedPriceByTotalPrice(t *testing.T) {
-	base, total, ratio := calculateAdminAdjustedPrice(AdminPriceAdjustRequest{BuyerTotalPrice: 70}, 1000, 20)
+	base, total, ratio := calculateAdminAdjustedPrice(AdminPriceAdjustRequest{BuyerTotalPriceCent: 7000}, 1000, 20)
 	if base != 50 || total != 70 || ratio != 20 {
 		t.Fatalf("unexpected adjusted price: base=%.2f total=%.2f ratio=%.2f", base, total, ratio)
 	}
@@ -35,12 +35,12 @@ func TestCalculateAdminAdjustedPriceByTotalPrice(t *testing.T) {
 
 func TestValidateRequestRequiresDepositAboveConsumables(t *testing.T) {
 	req := CreateRequest{
-		Title:          "测试账号",
-		ServerRegion:   "烽火地带",
-		Price:          100,
-		DepositAmount:  2,
-		HafCoinAmount:  1000000,
-		ScreenshotURLS: []string{"https://example.com/a.png"},
+		Title:             "测试账号",
+		ServerRegion:      "烽火地带",
+		PriceCent:         10000,
+		DepositAmountCent: 200,
+		HafCoinAmount:     1000000,
+		ScreenshotURLS:    []string{"https://example.com/a.png"},
 		AssetSummary: map[string]any{
 			"resources": []any{
 				map[string]any{"mode": "收费", "quantity": float64(2), "price": "1元/个"},
@@ -52,7 +52,7 @@ func TestValidateRequestRequiresDepositAboveConsumables(t *testing.T) {
 		t.Fatalf("expected ErrDepositTooLow, got %v", err)
 	}
 
-	req.DepositAmount = 3
+	req.DepositAmountCent = 300
 	if err := validateRequest(req, publishRules{}); err != nil {
 		t.Fatalf("expected valid request, got %v", err)
 	}
@@ -159,8 +159,8 @@ func TestExternalAccountToCreateRequestMapsUploadFields(t *testing.T) {
 	if req.HafCoinAmount != 197100000 {
 		t.Fatalf("expected haf coin amount 197100000, got %d", req.HafCoinAmount)
 	}
-	if req.Price != 458 || req.DepositAmount != 400 {
-		t.Fatalf("unexpected price/deposit %.2f/%.2f", req.Price, req.DepositAmount)
+	if req.PriceCent != 45800 || req.DepositAmountCent != 40000 {
+		t.Fatalf("unexpected price/deposit cent %d/%d", req.PriceCent, req.DepositAmountCent)
 	}
 	if req.AssetSummary["season_insurance"] != "3*3" {
 		t.Fatalf("expected 3*3 insurance, got %#v", req.AssetSummary["season_insurance"])

backend/internal/modules/order/dto.go

@@ -54,20 +54,20 @@ type SubmitReturnRequest struct {
 }
 
 type SubmitCheckoutRequest struct {
-	Content          string   `json:"content" binding:"required"`
-	ConsumableAmount float64  `json:"consumable_amount"`
-	CoinConsumedM    float64  `json:"coin_consumed_m"`
-	OtherAmount      float64  `json:"other_amount"`
-	EvidenceURLS     []string `json:"evidence_urls"`
+	Content              string   `json:"content" binding:"required"`
+	ConsumableAmountCent int64    `json:"consumable_amount_cent"`
+	CoinConsumedM        float64  `json:"coin_consumed_m"`
+	OtherAmountCent      int64    `json:"other_amount_cent"`
+	EvidenceURLS         []string `json:"evidence_urls"`
 }
 
 type CounterCheckoutRequest struct {
-	ConsumableAmount    float64  `json:"consumable_amount"`
-	CoinConsumedM       float64  `json:"coin_consumed_m"`
-	OtherAmount         float64  `json:"other_amount"`
-	DepositDeductAmount float64  `json:"deposit_deduct_amount"`
-	Reason              string   `json:"reason" binding:"required"`
-	EvidenceURLS        []string `json:"evidence_urls"`
+	ConsumableAmountCent    int64    `json:"consumable_amount_cent"`
+	CoinConsumedM           float64  `json:"coin_consumed_m"`
+	OtherAmountCent         int64    `json:"other_amount_cent"`
+	DepositDeductAmountCent int64    `json:"deposit_deduct_amount_cent"`
+	Reason                  string   `json:"reason" binding:"required"`
+	EvidenceURLS            []string `json:"evidence_urls"`
 }
 
 type AdminActionRequest struct {

backend/internal/modules/order/repository.go

@@ -77,22 +77,22 @@ func orderDurationHours(order model.RentalOrder) int {
 }
 
 func buildOrderPricing(listing model.RentalListing, account model.GameAccount) orderPricing {
-	rentAmount := roundMoney(listing.Price)
-	ownerRentAmount := readSnapshotPrice(account.AssetSummary, "seller_total_price")
-	if ownerRentAmount <= 0 || ownerRentAmount > rentAmount {
-		ownerRentAmount = rentAmount
+	rentAmountCent := listing.PriceCent
+	ownerRentAmountCent := int64(math.Round(readSnapshotPrice(account.AssetSummary, "seller_total_price") * 100))
+	if ownerRentAmountCent <= 0 || ownerRentAmountCent > rentAmountCent {
+		ownerRentAmountCent = rentAmountCent
 	}
-	platformFee := readSnapshotPrice(account.AssetSummary, "platform_markup_amount")
-	if platformFee <= 0 || roundMoney(ownerRentAmount+platformFee) != rentAmount {
-		platformFee = roundMoney(rentAmount - ownerRentAmount)
+	platformFeeCent := int64(math.Round(readSnapshotPrice(account.AssetSummary, "platform_markup_amount") * 100))
+	if platformFeeCent <= 0 || ownerRentAmountCent+platformFeeCent != rentAmountCent {
+		platformFeeCent = rentAmountCent - ownerRentAmountCent
 	}
-	if platformFee < 0 {
-		platformFee = 0
+	if platformFeeCent < 0 {
+		platformFeeCent = 0
 	}
 	return orderPricing{
-		RentAmountCent:      int64(math.Round(rentAmount * 100)),
-		OwnerRentAmountCent: int64(math.Round(ownerRentAmount * 100)),
-		PlatformFeeCent:     int64(math.Round(platformFee * 100)),
+		RentAmountCent:      rentAmountCent,
+		OwnerRentAmountCent: ownerRentAmountCent,
+		PlatformFeeCent:     platformFeeCent,
 	}
 }
 
@@ -173,8 +173,8 @@ func (r *Repository) Create(renterID uint64, req CreateRequest) (*OrderDTO, erro
 		}
 		rentHours := internalOrderHours
 		pricing := buildOrderPricing(listing, account)
-		depositOriginalAmount := roundMoney(listing.DepositAmount)
-		paidDepositAmount, waivedDepositAmount, err := r.depositAmountsForOrder(tx, renterID, depositOriginalAmount)
+		depositOriginalAmountCent := listing.DepositAmountCent
+		paidDepositAmountCent, waivedDepositAmountCent, err := r.depositAmountsForOrder(tx, renterID, depositOriginalAmountCent)
 		if err != nil {
 			return err
 		}
@@ -185,17 +185,11 @@ func (r *Repository) Create(renterID uint64, req CreateRequest) (*OrderDTO, erro
 			OwnerID:                   listing.OwnerID,
 			RenterID:                  renterID,
 			EstimatedDurationHours:    rentHours,
-			RentAmount:                float64(pricing.RentAmountCent) / 100,
 			RentAmountCent:            pricing.RentAmountCent,
-			OwnerRentAmount:           float64(pricing.OwnerRentAmountCent) / 100,
 			OwnerRentAmountCent:       pricing.OwnerRentAmountCent,
-			DepositAmount:             paidDepositAmount,
-			DepositAmountCent:         int64(math.Round(paidDepositAmount * 100)),
-			DepositOriginalAmount:     depositOriginalAmount,
-			DepositOriginalAmountCent: int64(math.Round(depositOriginalAmount * 100)),
-			DepositWaivedAmount:       waivedDepositAmount,
-			DepositWaivedAmountCent:   int64(math.Round(waivedDepositAmount * 100)),
-			PlatformFee:               float64(pricing.PlatformFeeCent) / 100,
+			DepositAmountCent:         paidDepositAmountCent,
+			DepositOriginalAmountCent: depositOriginalAmountCent,
+			DepositWaivedAmountCent:   waivedDepositAmountCent,
 			PlatformFeeCent:           pricing.PlatformFeeCent,
 			AccountSnapshot:           snapshot,
 			Status:                    "pending_payment",
@@ -231,9 +225,8 @@ func (r *Repository) Create(renterID uint64, req CreateRequest) (*OrderDTO, erro
 	return r.FindForUser(renterID, createdID)
 }
 
-func (r *Repository) depositAmountsForOrder(tx *gorm.DB, renterID uint64, originalDeposit float64) (float64, float64, error) {
-	originalDeposit = roundMoney(originalDeposit)
-	if originalDeposit <= 0 {
+func (r *Repository) depositAmountsForOrder(tx *gorm.DB, renterID uint64, originalDepositCent int64) (int64, int64, error) {
+	if originalDepositCent <= 0 {
 		return 0, 0, nil
 	}
 	var user model.User
@@ -244,28 +237,27 @@ func (r *Repository) depositAmountsForOrder(tx *gorm.DB, renterID uint64, origin
 	if err != nil {
 		return 0, 0, err
 	}
-	paidDeposit, waivedDeposit := calculateDepositWaiver(originalDeposit, user.DepositFreeQuota, used)
+	paidDeposit, waivedDeposit := calculateDepositWaiver(originalDepositCent, user.DepositFreeQuotaCent, used)
 	return paidDeposit, waivedDeposit, nil
 }
 
-func activeDepositFreeUsed(tx *gorm.DB, renterID uint64) (float64, error) {
-	var used float64
+func activeDepositFreeUsed(tx *gorm.DB, renterID uint64) (int64, error) {
+	var used int64
 	err := tx.Model(&model.RentalOrder{}).
 		Where("renter_id = ? AND status NOT IN ?",
 			renterID,
 			[]string{"completed", "cancelled", "closed"},
 		).
-		Select("COALESCE(SUM(deposit_waived_amount), 0)").
+		Select("COALESCE(SUM(deposit_waived_amount_cent), 0)").
 		Scan(&used).Error
-	return roundMoney(used), err
+	return used, err
 }
 
-func calculateDepositWaiver(originalDeposit float64, quota float64, used float64) (float64, float64) {
-	originalDeposit = roundMoney(originalDeposit)
-	remaining := maxMoney(roundMoney(quota)-roundMoney(used), 0)
-	waived := minMoney(originalDeposit, remaining)
-	paid := maxMoney(originalDeposit-waived, 0)
-	return roundMoney(paid), roundMoney(waived)
+func calculateDepositWaiver(originalDepositCent int64, quotaCent int64, usedCent int64) (int64, int64) {
+	remaining := maxCent(quotaCent-usedCent, 0)
+	waived := minCent(originalDepositCent, remaining)
+	paid := maxCent(originalDepositCent-waived, 0)
+	return paid, waived
 }
 
 // Pay 保留旧接口兼容，但真实付款必须走 payment 模块的渠道支付入口。
@@ -554,7 +546,7 @@ func (r *Repository) SubmitCheckout(userID uint64, orderID uint64, req SubmitChe
 		if err := tx.Create(&record).Error; err != nil {
 			return err
 		}
-		checkout, err := buildCheckout(order, order.RenterID, "submitted", req.Content, req.EvidenceURLS, req.ConsumableAmount, req.CoinConsumedM, req.OtherAmount, 0, false)
+		checkout, err := buildCheckout(order, order.RenterID, "submitted", req.Content, req.EvidenceURLS, req.ConsumableAmountCent, req.CoinConsumedM, req.OtherAmountCent, 0, false)
 		if err != nil {
 			return err
 		}
@@ -650,18 +642,22 @@ func (r *Repository) CounterCheckout(userID uint64, orderID uint64, req CounterC
 			First(&checkout).Error; err != nil {
 			return err
 		}
-		next, err := buildCheckout(order, checkout.InitiatedBy, "countered", checkout.Content, req.EvidenceURLS, req.ConsumableAmount, req.CoinConsumedM, req.OtherAmount, req.DepositDeductAmount, true)
+		next, err := buildCheckout(order, checkout.InitiatedBy, "countered", checkout.Content, req.EvidenceURLS, req.ConsumableAmountCent, req.CoinConsumedM, req.OtherAmountCent, req.DepositDeductAmountCent, true)
 		if err != nil {
 			return err
 		}
 		now := time.Now()
 		checkout.Status = "countered"
-		checkout.ConsumableAmount = next.ConsumableAmount
+		checkout.RentAmountCent = next.RentAmountCent
+		checkout.OwnerRentAmountCent = next.OwnerRentAmountCent
+		checkout.PlatformFeeCent = next.PlatformFeeCent
+		checkout.DepositAmountCent = next.DepositAmountCent
+		checkout.ConsumableAmountCent = next.ConsumableAmountCent
 		checkout.CoinConsumedM = next.CoinConsumedM
-		checkout.OtherAmount = next.OtherAmount
-		checkout.DepositDeductAmount = next.DepositDeductAmount
-		checkout.RenterRefundAmount = next.RenterRefundAmount
-		checkout.OwnerIncomeAmount = next.OwnerIncomeAmount
+		checkout.OtherAmountCent = next.OtherAmountCent
+		checkout.DepositDeductAmountCent = next.DepositDeductAmountCent
+		checkout.RenterRefundAmountCent = next.RenterRefundAmountCent
+		checkout.OwnerIncomeAmountCent = next.OwnerIncomeAmountCent
 		checkout.OwnerAdjustmentReason = req.Reason
 		checkout.OwnerAdjustedAt = &now
 		checkout.EvidenceURLS = next.EvidenceURLS
@@ -697,9 +693,9 @@ func (r *Repository) CounterCheckout(userID uint64, orderID uint64, req CounterC
 	}
 	dto := toCheckoutDTOForUser(*checkout, userID, model.RentalOrder{
 		OwnerID:             userID,
-		RentAmountCent:      int64(math.Round(checkout.RentAmount * 100)),
-		OwnerRentAmountCent: int64(math.Round(checkout.OwnerRentAmount * 100)),
-		DepositAmountCent:   int64(math.Round(checkout.DepositAmount * 100)),
+		RentAmountCent:      checkout.RentAmountCent,
+		OwnerRentAmountCent: checkout.OwnerRentAmountCent,
+		DepositAmountCent:   checkout.DepositAmountCent,
 	})
 	return &dto, nil
 }
@@ -1095,11 +1091,11 @@ func (r *Repository) finalizeCheckout(tx *gorm.DB, order *model.RentalOrder, che
 		refund = action
 	}
 
-	checkout.RentAmount = float64(settlement.ActualRentAmountCent) / 100
-	checkout.OwnerRentAmount = float64(settlement.OwnerRentIncomeCent) / 100
-	checkout.PlatformFee = float64(settlement.PlatformFeeCent) / 100
-	checkout.RenterRefundAmount = float64(settlement.RenterRefundCent) / 100
-	checkout.OwnerIncomeAmount = float64(settlement.OwnerIncomeCent) / 100
+	checkout.RentAmountCent = settlement.ActualRentAmountCent
+	checkout.OwnerRentAmountCent = settlement.OwnerRentIncomeCent
+	checkout.PlatformFeeCent = settlement.PlatformFeeCent
+	checkout.RenterRefundAmountCent = settlement.RenterRefundCent
+	checkout.OwnerIncomeAmountCent = settlement.OwnerIncomeCent
 	if err := notification.Append(tx,
 		notification.Entry{
 			UserID:  order.RenterID,
@@ -1229,22 +1225,18 @@ func applyPaymentDeadline(dto *OrderDTO, order model.RentalOrder, timeoutMinutes
 	dto.PaymentDeadlineAt = &deadline
 }
 
-func buildCheckout(order model.RentalOrder, initiatedBy uint64, status string, content string, evidenceURLS []string, consumableAmount float64, coinConsumedM float64, otherAmount float64, explicitDeduct float64, useExplicitDeduct bool) (model.OrderCheckout, error) {
-	if consumableAmount < 0 || coinConsumedM < 0 || otherAmount < 0 || explicitDeduct < 0 {
+func buildCheckout(order model.RentalOrder, initiatedBy uint64, status string, content string, evidenceURLS []string, consumableAmountCent int64, coinConsumedM float64, otherAmountCent int64, explicitDeductCent int64, useExplicitDeduct bool) (model.OrderCheckout, error) {
+	if consumableAmountCent < 0 || coinConsumedM < 0 || otherAmountCent < 0 || explicitDeductCent < 0 {
 		return model.OrderCheckout{}, ErrInvalidCheckoutAmount
 	}
-	consumableAmount = roundMoney(consumableAmount)
-	otherAmount = roundMoney(otherAmount)
-	explicitDeduct = roundMoney(explicitDeduct)
-	deductAmount := otherAmount
+	deductAmountCent := otherAmountCent
 	if useExplicitDeduct {
-		deductAmount = explicitDeduct
+		deductAmountCent = explicitDeductCent
 	}
-	depositAmountFromCent := float64(order.DepositAmountCent) / 100
-	if deductAmount > depositAmountFromCent {
+	if deductAmountCent > order.DepositAmountCent {
 		return model.OrderCheckout{}, ErrInvalidCheckoutAmount
 	}
-	settlement := calculateCheckoutSettlement(order, consumableAmount, roundQuantity(coinConsumedM), deductAmount)
+	settlement := calculateCheckoutSettlement(order, consumableAmountCent, roundQuantity(coinConsumedM), deductAmountCent)
 	evidence, err := marshalStringList(evidenceURLS)
 	if err != nil {
 		return model.OrderCheckout{}, err
@@ -1253,24 +1245,15 @@ func buildCheckout(order model.RentalOrder, initiatedBy uint64, status string, c
 		OrderID:                 order.ID,
 		InitiatedBy:             initiatedBy,
 		Status:                  status,
-		RentAmount:              float64(settlement.ActualRentAmountCent) / 100,
 		RentAmountCent:          settlement.ActualRentAmountCent,
-		OwnerRentAmount:         float64(settlement.OwnerRentIncomeCent) / 100,
 		OwnerRentAmountCent:     settlement.OwnerRentIncomeCent,
-		PlatformFee:             float64(settlement.PlatformFeeCent) / 100,
 		PlatformFeeCent:         settlement.PlatformFeeCent,
-		DepositAmount:           depositAmountFromCent,
 		DepositAmountCent:       order.DepositAmountCent,
-		ConsumableAmount:        consumableAmount,
-		ConsumableAmountCent:    int64(math.Round(consumableAmount * 100)),
+		ConsumableAmountCent:    consumableAmountCent,
 		CoinConsumedM:           roundQuantity(coinConsumedM),
-		OtherAmount:             otherAmount,
-		OtherAmountCent:         int64(math.Round(otherAmount * 100)),
-		DepositDeductAmount:     roundMoney(deductAmount),
+		OtherAmountCent:         otherAmountCent,
 		DepositDeductAmountCent: settlement.DepositCompensationCent,
-		RenterRefundAmount:      float64(settlement.RenterRefundCent) / 100,
 		RenterRefundAmountCent:  settlement.RenterRefundCent,
-		OwnerIncomeAmount:       float64(settlement.OwnerIncomeCent) / 100,
 		OwnerIncomeAmountCent:   settlement.OwnerIncomeCent,
 		Content:                 content,
 		EvidenceURLS:            evidence,
@@ -1278,57 +1261,55 @@ func buildCheckout(order model.RentalOrder, initiatedBy uint64, status string, c
 }
 
 func buildCheckoutSettlement(order model.RentalOrder, checkout *model.OrderCheckout) checkoutSettlement {
-	return calculateCheckoutSettlement(order, checkout.ConsumableAmount, checkout.CoinConsumedM, checkout.DepositDeductAmount)
+	return calculateCheckoutSettlement(order, checkout.ConsumableAmountCent, checkout.CoinConsumedM, checkout.DepositDeductAmountCent)
 }
 
-func calculateCheckoutSettlement(order model.RentalOrder, consumableAmount float64, coinConsumedM float64, depositDeductAmount float64) checkoutSettlement {
-	// 从分字段读取，转为元进行计算（保持现有逻辑兼容性）
-	orderRentAmount := float64(order.RentAmountCent) / 100
-	orderOwnerRentAmount := float64(order.OwnerRentAmountCent) / 100
-	orderDepositAmount := float64(order.DepositAmountCent) / 100
+func calculateCheckoutSettlement(order model.RentalOrder, consumableAmountCent int64, coinConsumedM float64, depositDeductAmountCent int64) checkoutSettlement {
+	orderRentAmountCent := order.RentAmountCent
+	orderOwnerRentAmountCent := order.OwnerRentAmountCent
+	orderDepositAmountCent := order.DepositAmountCent
 
-	buyerCoinBasePrice := readOrderSnapshotPrice(order.AccountSnapshot, "buyer_coin_base_price")
-	if buyerCoinBasePrice <= 0 || buyerCoinBasePrice > orderRentAmount {
-		buyerCoinBasePrice = orderRentAmount
+	buyerCoinBasePriceCent := int64(math.Round(readOrderSnapshotPrice(order.AccountSnapshot, "buyer_coin_base_price") * 100))
+	if buyerCoinBasePriceCent <= 0 || buyerCoinBasePriceCent > orderRentAmountCent {
+		buyerCoinBasePriceCent = orderRentAmountCent
 	}
-	sellerCoinBasePrice := readOrderSnapshotPrice(order.AccountSnapshot, "seller_coin_base_price")
-	if sellerCoinBasePrice <= 0 || sellerCoinBasePrice > orderOwnerRentAmount {
-		sellerCoinBasePrice = orderOwnerRentAmount
+	sellerCoinBasePriceCent := int64(math.Round(readOrderSnapshotPrice(order.AccountSnapshot, "seller_coin_base_price") * 100))
+	if sellerCoinBasePriceCent <= 0 || sellerCoinBasePriceCent > orderOwnerRentAmountCent {
+		sellerCoinBasePriceCent = orderOwnerRentAmountCent
 	}
-	prepaidConsumablePrice := readOrderSnapshotPrice(order.AccountSnapshot, "consumable_price")
-	if prepaidConsumablePrice <= 0 || prepaidConsumablePrice > orderRentAmount-buyerCoinBasePrice {
-		prepaidConsumablePrice = maxMoney(orderRentAmount-buyerCoinBasePrice, 0)
+	prepaidConsumablePriceCent := int64(math.Round(readOrderSnapshotPrice(order.AccountSnapshot, "consumable_price") * 100))
+	if prepaidConsumablePriceCent <= 0 || prepaidConsumablePriceCent > orderRentAmountCent-buyerCoinBasePriceCent {
+		prepaidConsumablePriceCent = maxCent(orderRentAmountCent-buyerCoinBasePriceCent, 0)
 	}
-	prepaidOwnerConsumablePrice := maxMoney(orderOwnerRentAmount-sellerCoinBasePrice, 0)
+	prepaidOwnerConsumablePriceCent := maxCent(orderOwnerRentAmountCent-sellerCoinBasePriceCent, 0)
 	totalCoinM := readOrderSnapshotCoinM(order.AccountSnapshot)
 	coinUseRatio := 1.0
 	if totalCoinM > 0 {
 		coinUseRatio = minRatio(maxRatio(roundQuantity(coinConsumedM)/totalCoinM, 0), 1)
 	}
-	usedBuyerCoinPrice := roundMoney(buyerCoinBasePrice * coinUseRatio)
-	usedOwnerCoinPrice := roundMoney(sellerCoinBasePrice * coinUseRatio)
-	usedBuyerConsumablePrice := minMoney(roundMoney(consumableAmount), prepaidConsumablePrice)
+	usedBuyerCoinPriceCent := int64(math.Round(float64(buyerCoinBasePriceCent) * coinUseRatio))
+	usedOwnerCoinPriceCent := int64(math.Round(float64(sellerCoinBasePriceCent) * coinUseRatio))
+	usedBuyerConsumablePriceCent := minCent(consumableAmountCent, prepaidConsumablePriceCent)
 	consumableUseRatio := 1.0
-	if prepaidConsumablePrice > 0 {
-		consumableUseRatio = minRatio(maxRatio(usedBuyerConsumablePrice/prepaidConsumablePrice, 0), 1)
+	if prepaidConsumablePriceCent > 0 {
+		consumableUseRatio = minRatio(maxRatio(float64(usedBuyerConsumablePriceCent)/float64(prepaidConsumablePriceCent), 0), 1)
 	}
-	usedOwnerConsumablePrice := roundMoney(prepaidOwnerConsumablePrice * consumableUseRatio)
-	actualRentAmount := minMoney(roundMoney(usedBuyerCoinPrice+usedBuyerConsumablePrice), orderRentAmount)
-	ownerRentIncome := minMoney(roundMoney(usedOwnerCoinPrice+usedOwnerConsumablePrice), orderOwnerRentAmount)
-	depositCompensation := minMoney(roundMoney(depositDeductAmount), orderDepositAmount)
-	rentRefund := maxMoney(orderRentAmount-actualRentAmount, 0)
-	depositRefund := maxMoney(orderDepositAmount-depositCompensation, 0)
+	usedOwnerConsumablePriceCent := int64(math.Round(float64(prepaidOwnerConsumablePriceCent) * consumableUseRatio))
+	actualRentAmountCent := minCent(usedBuyerCoinPriceCent+usedBuyerConsumablePriceCent, orderRentAmountCent)
+	ownerRentIncomeCent := minCent(usedOwnerCoinPriceCent+usedOwnerConsumablePriceCent, orderOwnerRentAmountCent)
+	depositCompensationCent := minCent(depositDeductAmountCent, orderDepositAmountCent)
+	rentRefundCent := maxCent(orderRentAmountCent-actualRentAmountCent, 0)
+	depositRefundCent := maxCent(orderDepositAmountCent-depositCompensationCent, 0)
 
-	// 最后转换为分返回
 	return checkoutSettlement{
-		OwnerRentIncomeCent:     int64(math.Round(ownerRentIncome * 100)),
-		DepositCompensationCent: int64(math.Round(depositCompensation * 100)),
-		OwnerIncomeCent:         int64(math.Round((ownerRentIncome + depositCompensation) * 100)),
-		RentRefundCent:          int64(math.Round(rentRefund * 100)),
-		DepositRefundCent:       int64(math.Round(depositRefund * 100)),
-		RenterRefundCent:        int64(math.Round((rentRefund + depositRefund) * 100)),
-		PlatformFeeCent:         int64(math.Round(maxMoney(actualRentAmount-ownerRentIncome, 0) * 100)),
-		ActualRentAmountCent:    int64(math.Round(actualRentAmount * 100)),
+		OwnerRentIncomeCent:     ownerRentIncomeCent,
+		DepositCompensationCent: depositCompensationCent,
+		OwnerIncomeCent:         ownerRentIncomeCent + depositCompensationCent,
+		RentRefundCent:          rentRefundCent,
+		DepositRefundCent:       depositRefundCent,
+		RenterRefundCent:        rentRefundCent + depositRefundCent,
+		PlatformFeeCent:         maxCent(actualRentAmountCent-ownerRentIncomeCent, 0),
+		ActualRentAmountCent:    actualRentAmountCent,
 	}
 }
 
@@ -1381,6 +1362,20 @@ func maxMoney(a float64, b float64) float64 {
 	return money.Max(a, b)
 }
 
+func minCent(a int64, b int64) int64 {
+	if a < b {
+		return a
+	}
+	return b
+}
+
+func maxCent(a int64, b int64) int64 {
+	if a > b {
+		return a
+	}
+	return b
+}
+
 func minRatio(a float64, b float64) float64 {
 	if a < b {
 		return a
@@ -1522,13 +1517,6 @@ func toHandoffDTO(record model.HandoffRecord) HandoffRecordDTO {
 	}
 }
 
-func effectiveDepositOriginalAmount(order model.RentalOrder) float64 {
-	if order.DepositOriginalAmount > 0 {
-		return order.DepositOriginalAmount
-	}
-	return order.DepositAmount
-}
-
 func effectiveDepositOriginalAmountCent(order model.RentalOrder) int64 {
 	if order.DepositOriginalAmountCent > 0 {
 		return order.DepositOriginalAmountCent
@@ -1537,11 +1525,11 @@ func effectiveDepositOriginalAmountCent(order model.RentalOrder) int64 {
 }
 
 func toCheckoutAdminDTO(checkout model.OrderCheckout) CheckoutDTO {
-	rentAmountCent := int64(math.Round(checkout.RentAmount * 100))
-	ownerRentAmountCent := int64(math.Round(checkout.OwnerRentAmount * 100))
-	platformFeeCent := int64(math.Round(checkout.PlatformFee * 100))
-	renterRefundAmountCent := int64(math.Round(checkout.RenterRefundAmount * 100))
-	ownerIncomeAmountCent := int64(math.Round(checkout.OwnerIncomeAmount * 100))
+	rentAmountCent := checkout.RentAmountCent
+	ownerRentAmountCent := checkout.OwnerRentAmountCent
+	platformFeeCent := checkout.PlatformFeeCent
+	renterRefundAmountCent := checkout.RenterRefundAmountCent
+	ownerIncomeAmountCent := checkout.OwnerIncomeAmountCent
 	return CheckoutDTO{
 		ID:                      checkout.ID,
 		OrderID:                 checkout.OrderID,
@@ -1552,11 +1540,11 @@ func toCheckoutAdminDTO(checkout model.OrderCheckout) CheckoutDTO {
 		RentAmountCent:          &rentAmountCent,
 		OwnerRentAmountCent:     &ownerRentAmountCent,
 		PlatformFeeCent:         &platformFeeCent,
-		DepositAmountCent:       int64(math.Round(checkout.DepositAmount * 100)),
-		ConsumableAmountCent:    int64(math.Round(checkout.ConsumableAmount * 100)),
+		DepositAmountCent:       checkout.DepositAmountCent,
+		ConsumableAmountCent:    checkout.ConsumableAmountCent,
 		CoinConsumedM:           checkout.CoinConsumedM,
-		OtherAmountCent:         int64(math.Round(checkout.OtherAmount * 100)),
-		DepositDeductAmountCent: int64(math.Round(checkout.DepositDeductAmount * 100)),
+		OtherAmountCent:         checkout.OtherAmountCent,
+		DepositDeductAmountCent: checkout.DepositDeductAmountCent,
 		RenterRefundAmountCent:  &renterRefundAmountCent,
 		OwnerIncomeAmountCent:   &ownerIncomeAmountCent,
 		Content:                 checkout.Content,

backend/internal/modules/order/repository_test.go

@@ -27,7 +27,7 @@ func TestCalculateCheckoutSettlementRefundsUnusedRent(t *testing.T) {
 		}`)),
 	}
 
-	settlement := calculateCheckoutSettlement(order, 7, 90, 0)
+	settlement := calculateCheckoutSettlement(order, 700, 90, 0)
 
 	// 角精度：243.7 = roundMoney(236.7 + 7)
 	if settlement.ActualRentAmountCent != 24370 {
@@ -104,7 +104,7 @@ func TestCalculateCheckoutSettlementAddsDepositCompensation(t *testing.T) {
 		}`)),
 	}
 
-	settlement := calculateCheckoutSettlement(order, 120, 100, 30)
+	settlement := calculateCheckoutSettlement(order, 12000, 100, 3000)
 
 	if settlement.ActualRentAmountCent != 38300 {
 		t.Fatalf("ActualRentAmountCent = %d, want 38300", settlement.ActualRentAmountCent)
@@ -126,17 +126,17 @@ func TestCalculateCheckoutSettlementAddsDepositCompensation(t *testing.T) {
 func TestCalculateDepositWaiverUsesSharedRemainingQuota(t *testing.T) {
 	paid, waived := calculateDepositWaiver(500, 300, 0)
 	if paid != 200 || waived != 300 {
-		t.Fatalf("paid = %.1f, waived = %.1f, want 200.0, 300.0", paid, waived)
+		t.Fatalf("paid = %d, waived = %d, want 200, 300", paid, waived)
 	}
 
 	paid, waived = calculateDepositWaiver(500, 300, 200)
 	if paid != 400 || waived != 100 {
-		t.Fatalf("paid = %.1f, waived = %.1f, want 400.0, 100.0", paid, waived)
+		t.Fatalf("paid = %d, waived = %d, want 400, 100", paid, waived)
 	}
 
 	paid, waived = calculateDepositWaiver(500, 300, 300)
 	if paid != 500 || waived != 0 {
-		t.Fatalf("paid = %.1f, waived = %.1f, want 500.0, 0.0", paid, waived)
+		t.Fatalf("paid = %d, waived = %d, want 500, 0", paid, waived)
 	}
 }
 

backend/internal/modules/payment/dto.go

@@ -12,9 +12,9 @@ type StartPaymentRequest struct {
 }
 
 type WalletRechargePaymentRequest struct {
-	Amount    float64 `json:"amount"`
-	PayWay    string  `json:"pay_way"`
-	JSPayFlag string  `json:"jspay_flag"`
+	AmountCent int64  `json:"amount_cent"`
+	PayWay     string `json:"pay_way"`
+	JSPayFlag  string `json:"jspay_flag"`
 }
 
 type PaymentDTO struct {

backend/internal/modules/payment/repository.go

@@ -229,8 +229,8 @@ func (r *Repository) Start(userID uint64, orderID uint64, req StartPaymentReques
 }
 
 func (r *Repository) StartWalletRecharge(userID uint64, req WalletRechargePaymentRequest, clientIP string) (*PaymentDTO, error) {
-	amountCent := moneyCent(req.Amount)
-	if userID == 0 || req.Amount < MinWalletRechargeAmount || amountCent <= 0 {
+	amountCent := req.AmountCent
+	if userID == 0 || amountCent < moneyCent(MinWalletRechargeAmount) {
 		return nil, ErrPaymentCannotStart
 	}
 	runtimeConfig, err := r.defaultRuntimeConfig()
@@ -764,7 +764,7 @@ func (r *Repository) preparePayment(userID uint64, orderID uint64, req StartPaym
 		if row.Status != "pending_payment" {
 			return ErrPaymentCannotStart
 		}
-		amountCent := moneyCent(row.RentAmount + row.DepositAmount)
+		amountCent := row.RentAmountCent + row.DepositAmountCent
 		if amountCent <= 0 {
 			return ErrPaymentCannotStart
 		}

backend/internal/modules/withdrawal/repository.go

@@ -58,11 +58,8 @@ func (r *Repository) Create(userID uint64, req CreateWithdrawalRequest) (*Withdr
 	withdrawal := model.WithdrawalRequest{
 		WithdrawNo:       withdrawNo,
 		UserID:           userID,
-		Amount:           float64(req.AmountCent) / 100,
 		AmountCent:       req.AmountCent,
-		Fee:              float64(feeCent) / 100,
 		FeeCent:          feeCent,
-		ActualAmount:     float64(actualAmountCent) / 100,
 		ActualAmountCent: actualAmountCent,
 		PaymentAccountID: &req.PaymentAccountID,
 		AccountType:      paymentAccount.AccountType,