feat(contact): 添加联系信息提交功能

实现联系信息提交功能，包括：
1. 新增ContactRequest类型定义
2. 添加POST /contact路由
3. 实现联系信息提交处理逻辑
4. 通过Telegram发送联系信息通知
5. 在Telegram配置中添加GroupChatID字段

internal/logic/notify/appleIAPNotifyLogic.go

@@ -2,9 +2,14 @@ package notify
 
 import (
 	"context"
+	"encoding/json"
+	"strconv"
+	"strings"
 
 	iapmodel "github.com/perfect-panel/server/internal/model/iap/apple"
+	"github.com/perfect-panel/server/internal/model/subscribe"
 	"github.com/perfect-panel/server/internal/svc"
+	"github.com/perfect-panel/server/internal/types"
 	iapapple "github.com/perfect-panel/server/pkg/iap/apple"
 	"github.com/perfect-panel/server/pkg/logger"
 	"gorm.io/gorm"
@@ -82,10 +87,79 @@ func (l *AppleIAPNotifyLogic) Handle(signedPayload string) error {
 				}
 			}
 		}
-		pm, _ := iapapple.ParseProductMap(l.svcCtx.Config.Site.CustomData)
-		m := pm.Items[txPayload.ProductId]
-		// 若产品映射缺失，记录警告日志（不影响事务入库）
-		if m.DurationDays == 0 {
+		var days int64
+		{
+			pid := strings.ToLower(txPayload.ProductId)
+			parts := strings.Split(pid, ".")
+			for i := len(parts) - 1; i >= 0; i-- {
+				p := parts[i]
+				var unit string
+				if strings.HasPrefix(p, "day") {
+					unit = "Day"
+					p = p[len("day"):]
+				} else if strings.HasPrefix(p, "month") {
+					unit = "Month"
+					p = p[len("month"):]
+				} else if strings.HasPrefix(p, "year") {
+					unit = "Year"
+					p = p[len("year"):]
+				}
+				if unit != "" {
+					digits := p
+					for j := 0; j < len(digits); j++ {
+						if digits[j] < '0' || digits[j] > '9' {
+							digits = digits[:j]
+							break
+						}
+					}
+					if q, e := strconv.ParseInt(digits, 10, 64); e == nil && q > 0 {
+						switch unit {
+						case "Day":
+							days = q
+						case "Month":
+							days = q * 30
+						case "Year":
+							days = q * 365
+						}
+						break
+					}
+				}
+			}
+		}
+		if days == 0 {
+			_, subs, e := l.svcCtx.SubscribeModel.FilterList(l.ctx, &subscribe.FilterParams{
+				Page:            1,
+				Size:            9999,
+				Show:            true,
+				Sell:            true,
+				DefaultLanguage: true,
+			})
+			if e == nil && len(subs) > 0 {
+				for _, item := range subs {
+					var discounts []types.SubscribeDiscount
+					if item.Discount != "" {
+						_ = json.Unmarshal([]byte(item.Discount), &discounts)
+					}
+					for _, d := range discounts {
+						if strings.Contains(strings.ToLower(txPayload.ProductId), strings.ToLower(item.UnitTime)) && d.Quantity > 0 {
+							// fallback not strict
+							if item.UnitTime == "Day" {
+								days = int64(d.Quantity)
+							} else if item.UnitTime == "Month" {
+								days = int64(d.Quantity) * 30
+							} else if item.UnitTime == "Year" {
+								days = int64(d.Quantity) * 365
+							}
+							break
+						}
+					}
+					if days > 0 {
+						break
+					}
+				}
+			}
+		}
+		if days == 0 {
 			l.Errorw("iap notify product mapping missing", logger.Field("productId", txPayload.ProductId))
 		}
 		token := "iap:" + txPayload.OriginalTransactionId
@@ -97,9 +171,9 @@ func (l *AppleIAPNotifyLogic) Handle(signedPayload string) error {
 				t := *txPayload.RevocationDate
 				sub.FinishedAt = &t
 				sub.ExpireTime = t
-			} else if m.DurationDays > 0 {
+			} else if days > 0 {
 				// 正常：根据映射天数续期
-				exp := iapapple.CalcExpire(txPayload.PurchaseDate, m.DurationDays)
+				exp := iapapple.CalcExpire(txPayload.PurchaseDate, days)
 				sub.ExpireTime = exp
 				sub.Status = 1
 			}