feat: 补全多云资产与账单同步

- 接入 AWS、华为云和 Azure 资产及账单 API

- 按原始币种隔离统计并修正账号服务器数

- 修复侧栏菜单展开后的滚动行为

backend/controller/billing.go

@@ -37,6 +37,9 @@ func (h *BillingHandler) ListBillings(c *gin.Context) {
 	if accountID := c.Query("cloud_account_id"); accountID != "" {
 		query = query.Where("cloud_account_id = ?", accountID)
 	}
+	if currency := c.Query("currency"); currency != "" {
+		query = query.Where("currency = ?", currency)
+	}
 	if startDate := c.Query("start_date"); startDate != "" {
 		query = query.Where("billing_date >= ?", startDate)
 	}
@@ -167,27 +170,29 @@ func (h *BillingHandler) GetBillingStats(c *gin.Context) {
 	yesterday := now.AddDate(0, 0, -1).Format("2006-01-02")
 	monthStart := now.Format("2006-01") + "-01"
 	yearStart := fmt.Sprintf("%d-01-01", now.Year())
+	currency := c.DefaultQuery("currency", "CNY")
 
 	stats := model.BillingStats{
+		Currency:     currency,
 		MonthTrend:   []model.DailyCost{},
 		ProviderDist: []model.ProviderCost{},
 		Alerts:       []model.BillingAlert{},
 	}
 
 	// 今日成本
-	h.db.Model(&model.CloudBilling{}).Where("billing_date = ?", today).
+	h.db.Model(&model.CloudBilling{}).Where("billing_date = ? AND currency = ?", today, currency).
 		Select("COALESCE(SUM(cost), 0)").Scan(&stats.TodayCost)
 
 	// 昨日成本
-	h.db.Model(&model.CloudBilling{}).Where("billing_date = ?", yesterday).
+	h.db.Model(&model.CloudBilling{}).Where("billing_date = ? AND currency = ?", yesterday, currency).
 		Select("COALESCE(SUM(cost), 0)").Scan(&stats.YesterdayCost)
 
 	// 本月成本
-	h.db.Model(&model.CloudBilling{}).Where("billing_date >= ?", monthStart).
+	h.db.Model(&model.CloudBilling{}).Where("billing_date >= ? AND currency = ?", monthStart, currency).
 		Select("COALESCE(SUM(cost), 0)").Scan(&stats.MonthCost)
 
 	// 本年成本
-	h.db.Model(&model.CloudBilling{}).Where("billing_date >= ?", yearStart).
+	h.db.Model(&model.CloudBilling{}).Where("billing_date >= ? AND currency = ?", yearStart, currency).
 		Select("COALESCE(SUM(cost), 0)").Scan(&stats.YearCost)
 
 	// 近30天趋势
@@ -198,7 +203,7 @@ func (h *BillingHandler) GetBillingStats(c *gin.Context) {
 	var trends []dayCost
 	h.db.Model(&model.CloudBilling{}).
 		Select("billing_date, SUM(cost) as total").
-		Where("billing_date >= ?", now.AddDate(0, 0, -29).Format("2006-01-02")).
+		Where("billing_date >= ? AND currency = ?", now.AddDate(0, 0, -29).Format("2006-01-02"), currency).
 		Group("billing_date").
 		Order("billing_date ASC").
 		Scan(&trends)
@@ -215,7 +220,7 @@ func (h *BillingHandler) GetBillingStats(c *gin.Context) {
 	var provCosts []provCost
 	h.db.Model(&model.CloudBilling{}).
 		Select("provider, SUM(cost) as total").
-		Where("billing_date >= ?", monthStart).
+		Where("billing_date >= ? AND currency = ?", monthStart, currency).
 		Group("provider").
 		Scan(&provCosts)
 
@@ -258,7 +263,7 @@ func (h *BillingHandler) checkBillingAlerts(stats *model.BillingStats, now time.
 
 		if rule.Metric == "daily" {
 			// 查今日该厂商/账号的成本
-			q := h.db.Model(&model.CloudBilling{}).Where("billing_date = ?", now.Format("2006-01-02"))
+			q := h.db.Model(&model.CloudBilling{}).Where("billing_date = ? AND currency = ?", now.Format("2006-01-02"), stats.Currency)
 			if rule.Provider != "" {
 				q = q.Where("provider = ?", rule.Provider)
 			}
@@ -268,7 +273,7 @@ func (h *BillingHandler) checkBillingAlerts(stats *model.BillingStats, now time.
 			q.Select("COALESCE(SUM(cost), 0)").Scan(&current)
 		} else {
 			// monthly - 本月累计
-			q := h.db.Model(&model.CloudBilling{}).Where("billing_date >= ?", now.Format("2006-01")+"-01")
+			q := h.db.Model(&model.CloudBilling{}).Where("billing_date >= ? AND currency = ?", now.Format("2006-01")+"-01", stats.Currency)
 			if rule.Provider != "" {
 				q = q.Where("provider = ?", rule.Provider)
 			}