fix: IAP 支付流程优化与关键 bug 修复

- getStatusLogic 类型断言修复（*user.User）
- restoreLogic 事务拆分为单条处理 + appAccountToken 解析
- attachTransactionLogic 提取 ParseProductIdDuration 共享函数
- 新增 config_helper.go 统一 Apple API 配置加载
- reconcileLogic 补充 BundleID 配置读取
- activateOrderLogic 邀请赠送天数逻辑完善

Co-Authored-By: claude-flow <ruv@ruv.net>

internal/logic/public/iap/apple/getStatusLogic.go

@@ -5,6 +5,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/perfect-panel/server/internal/model/user"
 	"github.com/perfect-panel/server/internal/svc"
 	"github.com/perfect-panel/server/internal/types"
 	"github.com/perfect-panel/server/pkg/constant"
@@ -28,7 +29,7 @@ func NewGetStatusLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetStat
 }
 
 func (l *GetStatusLogic) GetStatus() (*types.GetAppleStatusResponse, error) {
-	u, ok := l.ctx.Value(constant.CtxKeyUser).(*struct{ Id int64 })
+	u, ok := l.ctx.Value(constant.CtxKeyUser).(*user.User)
 	if !ok || u == nil {
 		return nil, errors.Wrapf(xerr.NewErrCode(xerr.InvalidAccess), "invalid access")
 	}