新增匹配次数管理功能，优化用户匹配体验。通过服务端计算用户的匹配配额，更新用户状态以反映剩余匹配次数。同时，调整匹配页面逻辑，确保在匹配次数用尽时提示用户购买更多次数。更新相关API以支持匹配记录的存储与查询，提升系统稳定性。

soul-api/internal/handler/user.go

@@ -276,6 +276,9 @@ func UserPurchaseStatus(c *gin.Context) {
 			purchasedSections = append(purchasedSections, r.ProductID)
 		}
 	}
+	// 匹配次数配额：纯计算（订单 + match_records）
+	freeLimit := getFreeMatchLimit(db)
+	matchQuota := GetMatchQuota(db, userId, freeLimit)
 	earnings := 0.0
 	if user.Earnings != nil {
 		earnings = *user.Earnings
@@ -288,8 +291,17 @@ func UserPurchaseStatus(c *gin.Context) {
 		"hasFullBook":       user.HasFullBook != nil && *user.HasFullBook,
 		"purchasedSections": purchasedSections,
 		"purchasedCount":    len(purchasedSections),
-		"earnings":          earnings,
-		"pendingEarnings":   pendingEarnings,
+		"matchCount":        matchQuota.PurchasedTotal,
+		"matchQuota": gin.H{
+			"purchasedTotal":    matchQuota.PurchasedTotal,
+			"purchasedUsed":    matchQuota.PurchasedUsed,
+			"matchesUsedToday": matchQuota.MatchesUsedToday,
+			"freeRemainToday":  matchQuota.FreeRemainToday,
+			"purchasedRemain":  matchQuota.PurchasedRemain,
+			"remainToday":      matchQuota.RemainToday,
+		},
+		"earnings":       earnings,
+		"pendingEarnings": pendingEarnings,
 	}})
 }