chore: 统一本地服务器与远程仓库源码

- 合并 main 与 master 历史并以服务器结构为基线
- 保留迁移、数据保留、AWS 账单与部署安全能力
- 建立 SDD 规格和 CI 验证闭环

backend/pkg/billingsync/sync.go

@@ -3,6 +3,7 @@ package billingsync
 
 import (
 	"fmt"
+	"strings"
 	"time"
 
 	"ezops/cloud"
@@ -23,16 +24,7 @@ type Result struct {
 
 // Yesterday 昨日日期 YYYY-MM-DD
 func Yesterday() string {
-	return billingYesterdayAt(time.Now())
-}
-
-// billingYesterdayAt 按平台业务时区计算昨日，避免服务器 UTC 时区造成日期偏差。 // Logan.Li
-func billingYesterdayAt(now time.Time) string {
-	location, err := time.LoadLocation("Asia/Shanghai")
-	if err != nil {
-		location = time.FixedZone("CST", 8*60*60)
-	}
-	return now.In(location).AddDate(0, 0, -1).Format("2006-01-02")
+	return time.Now().AddDate(0, 0, -1).Format("2006-01-02")
 }
 
 // SyncDate 同步指定日期账单（全部或单个活跃云账号）
@@ -47,7 +39,7 @@ func SyncDate(db *gorm.DB, billingDate string, accountID *uint) Result {
 	if accountID != nil {
 		q = q.Where("id = ?", *accountID)
 	} else {
-		// 批量同步只选择已接入账单 API 的厂商，避免无效失败。 // Logan.Li
+		// 批量同步仅处理已接入账单 API 的厂商，避免不支持厂商造成无效失败。 // Logan.Li
 		q = q.Where("provider IN ?", cloud.SupportedBillingProviders)
 	}
 	q.Find(&accounts)
@@ -95,15 +87,8 @@ func syncAccount(db *gorm.DB, account model.CloudAccount, billingDate string) (c
 
 	accountID := account.ID
 	accountName := account.Name
-	billingCurrency := records[0].Currency
-	if billingCurrency == "" {
-		billingCurrency = "CNY"
-	}
 
 	for _, rec := range records {
-		if rec.Currency == "" {
-			rec.Currency = billingCurrency
-		}
 		var existing model.CloudBilling
 		findErr := db.Where(
 			"cloud_account_id = ? AND billing_date = ? AND provider = ? AND service = ? AND region = ?",
@@ -125,6 +110,7 @@ func syncAccount(db *gorm.DB, account model.CloudAccount, billingDate string) (c
 			if row.Currency == "" {
 				row.Currency = "CNY"
 			}
+			row.Currency = strings.ToUpper(row.Currency)
 			if db.Create(&row).Error == nil {
 				created++
 			} else {
@@ -137,9 +123,13 @@ func syncAccount(db *gorm.DB, account model.CloudAccount, billingDate string) (c
 			continue
 		}
 
+		currency := strings.ToUpper(rec.Currency)
+		if currency == "" {
+			currency = "CNY"
+		}
 		if db.Model(&existing).Updates(map[string]interface{}{
 			"cost":         rec.Cost,
-			"currency":     rec.Currency,
+			"currency":     currency,
 			"description":  rec.Description,
 			"account_name": accountName,
 		}).Error == nil {
@@ -152,12 +142,9 @@ func syncAccount(db *gorm.DB, account model.CloudAccount, billingDate string) (c
 	monthStart := billingDate[:7] + "-01"
 	var monthCost float64
 	db.Model(&model.CloudBilling{}).
-		Where("cloud_account_id = ? AND billing_date >= ? AND currency = ?", accountID, monthStart, billingCurrency).
+		Where("cloud_account_id = ? AND billing_date >= ?", accountID, monthStart).
 		Select("COALESCE(SUM(cost), 0)").Scan(&monthCost)
-	db.Model(&account).Updates(map[string]interface{}{
-		"monthly_cost":     monthCost,
-		"billing_currency": billingCurrency,
-	})
+	db.Model(&account).Update("monthly_cost", monthCost)
 
 	return created, updated, skipped, nil
 }