更新输入框边距规范，增加资源对接弹窗的布局修正，确保在小程序开发中避免文字贴边问题。补充相关口诀以提升开发一致性，并在经验清单中记录最新最佳实践。调整项目索引以反映最新进展，增强文档的可用性与可追溯性。

soul-api/internal/handler/orders.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"strconv"
 	"strings"
+	"sync"
 	"time"
 
 	"soul-api/internal/database"
@@ -13,6 +14,7 @@ import (
 	"soul-api/internal/wechat"
 
 	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
 )
 
 // OrdersList GET /api/orders（带用户昵称/头像/手机号，分销佣金按配置比例计算；支持分页 page、pageSize，筛选 status，搜索 search）
@@ -29,50 +31,64 @@ func OrdersList(c *gin.Context) {
 		pageSize = 10
 	}
 
-	q := db.Model(&model.Order{})
-	if statusFilter != "" && statusFilter != "all" {
-		if statusFilter == "completed" {
-			q = q.Where("status IN ?", []string{"paid", "completed"})
-		} else {
-			q = q.Where("status = ?", statusFilter) // 含 refunded、pending、created、failed
+	// 预加载 referral_config，避免订单循环内 N+1 查询
+	var refCfgRow model.SystemConfig
+	refCfg := (*model.SystemConfig)(nil)
+	if err := db.Where("config_key = ?", "referral_config").First(&refCfgRow).Error; err == nil {
+		refCfg = &refCfgRow
+	}
+
+	// 构建带筛选的查询（count 与 list 共用条件）
+	applyOrdersFilter := func(q *gorm.DB) *gorm.DB {
+		if statusFilter != "" && statusFilter != "all" {
+			if statusFilter == "completed" {
+				q = q.Where("status IN ?", []string{"paid", "completed"})
+			} else {
+				q = q.Where("status = ?", statusFilter)
+			}
 		}
+		if search != "" {
+			pattern := "%" + search + "%"
+			q = q.Where("order_sn LIKE ? OR id LIKE ? OR user_id IN (SELECT id FROM users WHERE COALESCE(nickname,'') LIKE ? OR COALESCE(phone,'') LIKE ? OR id LIKE ?)",
+				pattern, pattern, pattern, pattern, pattern)
+		}
+		return q
 	}
-	if search != "" {
-		pattern := "%" + search + "%"
-		q = q.Where("order_sn LIKE ? OR id LIKE ? OR user_id IN (SELECT id FROM users WHERE COALESCE(nickname,'') LIKE ? OR COALESCE(phone,'') LIKE ? OR id LIKE ?)",
-			pattern, pattern, pattern, pattern, pattern)
-	}
+
 	var total int64
-	q.Count(&total)
-
 	var totalRevenue, todayRevenue float64
-	db.Model(&model.Order{}).Select("COALESCE(SUM(amount), 0)").
-		Where("status IN ?", []string{"paid", "completed"}).Scan(&totalRevenue)
-	todayStart := time.Now().Truncate(24 * time.Hour)
-	todayEnd := todayStart.Add(24 * time.Hour)
-	db.Model(&model.Order{}).Select("COALESCE(SUM(amount), 0)").
-		Where("status IN ? AND created_at >= ? AND created_at < ?", []string{"paid", "completed"}, todayStart, todayEnd).
-		Scan(&todayRevenue)
-
 	var orders []model.Order
-	query := db.Model(&model.Order{})
-	if statusFilter != "" && statusFilter != "all" {
-		if statusFilter == "completed" {
-			query = query.Where("status IN ?", []string{"paid", "completed"})
-		} else {
-			query = query.Where("status = ?", statusFilter)
-		}
-	}
-	if search != "" {
-		pattern := "%" + search + "%"
-		query = query.Where("order_sn LIKE ? OR id LIKE ? OR user_id IN (SELECT id FROM users WHERE COALESCE(nickname,'') LIKE ? OR COALESCE(phone,'') LIKE ? OR id LIKE ?)",
-			pattern, pattern, pattern, pattern, pattern)
-	}
-	if err := query.Order("created_at DESC").
-		Offset((page - 1) * pageSize).
-		Limit(pageSize).
-		Find(&orders).Error; err != nil {
-		c.JSON(http.StatusOK, gin.H{"success": false, "error": err.Error(), "orders": []interface{}{}, "total": 0})
+	var ordersErr error
+	var wg sync.WaitGroup
+
+	// 并行：count、营收统计、订单列表
+	wg.Add(3)
+	go func() {
+		defer wg.Done()
+		applyOrdersFilter(db.Model(&model.Order{})).Count(&total)
+	}()
+	go func() {
+		defer wg.Done()
+		db.Model(&model.Order{}).Select("COALESCE(SUM(amount), 0)").
+			Where("status IN ?", []string{"paid", "completed"}).Scan(&totalRevenue)
+		todayStart := time.Now().Truncate(24 * time.Hour)
+		todayEnd := todayStart.Add(24 * time.Hour)
+		db.Model(&model.Order{}).Select("COALESCE(SUM(amount), 0)").
+			Where("status IN ? AND created_at >= ? AND created_at < ?", []string{"paid", "completed"}, todayStart, todayEnd).
+			Scan(&todayRevenue)
+	}()
+	go func() {
+		defer wg.Done()
+		query := applyOrdersFilter(db.Model(&model.Order{}))
+		ordersErr = query.Order("created_at DESC").
+			Offset((page - 1) * pageSize).
+			Limit(pageSize).
+			Find(&orders).Error
+	}()
+	wg.Wait()
+
+	if ordersErr != nil {
+		c.JSON(http.StatusOK, gin.H{"success": false, "error": ordersErr.Error(), "orders": []interface{}{}, "total": 0})
 		return
 	}
 	totalPages := int(total) / pageSize
@@ -147,7 +163,7 @@ func OrdersList(c *gin.Context) {
 			if u := userMap[*o.ReferrerID]; u != nil {
 				refUser = u
 			}
-			m["referrerEarnings"] = computeOrderCommission(db, &o, refUser)
+			m["referrerEarnings"] = computeOrderCommission(db, &o, refUser, refCfg)
 		} else {
 			m["referrerEarnings"] = nil
 		}