feat: 新增多密码验证支持及架构文档

refactor: 重构用户模型和密码验证逻辑
feat(epay): 添加支付类型支持
docs: 添加安装和配置指南文档
fix: 修复优惠券过期检查逻辑
perf: 优化设备解绑缓存清理流程
test: 添加密码验证测试用例
chore: 更新依赖版本

pkg/xerr/errCode.go

@@ -57,6 +57,7 @@ const (
 	CouponAlreadyUsed       uint32 = 50002 // Coupon has already been used
 	CouponNotApplicable     uint32 = 50003 // Coupon does not match the order or conditions
 	CouponInsufficientUsage uint32 = 50004 // Coupon has insufficient remaining uses
+	CouponExpired           uint32 = 50005 // Coupon is expired
 )
 
 // Subscribe

pkg/xerr/errMsg.go

@@ -46,6 +46,7 @@ func init() {
 		CouponAlreadyUsed:       "Coupon has already been used",
 		CouponNotApplicable:     "Coupon does not match the order or conditions",
 		CouponInsufficientUsage: "Coupon has insufficient remaining uses",
+		CouponExpired:           "Coupon is expired",
 
 		// Subscribe
 		SubscribeExpired:                "Subscribe is expired",