feat(shipping): 发货列表返回收货地址信息

为用户发货分组接口补充 address 字段，在按批次聚合发货记录时一并收集 address_id，批量查询 user_addresses 并回填到 shipment 返回结果。
这样小程序发货列表卡片可以直接展示本次申请发货所选的联系人、手机号和详细地址，避免前端额外发起地址查询或依赖本地拼装。

internal/service/user/shipping_groups.go

@@ -2,6 +2,7 @@ package user
 
 import (
 	"context"
+	"sort"
 	"strconv"
 	"time"
 )
@@ -14,18 +15,30 @@ type ProductInfo struct {
 	Price int64  `json:"price"`
 }
 
+type ShipmentAddressInfo struct {
+	ID        int64  `json:"id"`
+	Name      string `json:"name"`
+	Phone     string `json:"phone"`
+	Province  string `json:"province"`
+	City      string `json:"city"`
+	District  string `json:"district"`
+	Detail    string `json:"detail"`
+	IsDefault bool   `json:"is_default"`
+}
+
 type ShipmentGroup struct {
-	ExpressCode  string        `json:"express_code"`
+	ExpressCode  string               `json:"express_code"`
-	ExpressNo    string        `json:"express_no"`
+	ExpressNo    string               `json:"express_no"`
-	BatchNo      string        `json:"batch_no"`
+	BatchNo      string               `json:"batch_no"`
-	Status       int32         `json:"status"`
+	Status       int32                `json:"status"`
-	Count        int64         `json:"count"`
+	Count        int64                `json:"count"`
-	ShippedAt    *time.Time    `json:"shipped_at,omitempty"`
+	ShippedAt    *time.Time           `json:"shipped_at,omitempty"`
-	ReceivedAt   *time.Time    `json:"received_at,omitempty"`
+	ReceivedAt   *time.Time           `json:"received_at,omitempty"`
-	CreatedAt    *time.Time    `json:"created_at,omitempty"` // 发货申请创建时间，用于前端判断48小时撤销限制
+	CreatedAt    *time.Time           `json:"created_at,omitempty"` // 发货申请创建时间，用于前端判断48小时撤销限制
-	InventoryIDs []int64       `json:"inventory_ids"`
+	InventoryIDs []int64              `json:"inventory_ids"`
-	ProductIDs   []int64       `json:"product_ids"`
+	ProductIDs   []int64              `json:"product_ids"`
-	Products     []ProductInfo `json:"products"`
+	Products     []ProductInfo        `json:"products"`
+	Address      *ShipmentAddressInfo `json:"address,omitempty"`
 }
 
 func (s *service) ListUserShipmentGroups(ctx context.Context, userID int64, page, pageSize int) (items []*ShipmentGroup, total int64, err error) {
@@ -55,6 +68,7 @@ func (s *service) ListUserShipmentGroups(ctx context.Context, userID int64, page
 		shippedAt  *time.Time
 		receivedAt *time.Time
 		createdAt  *time.Time // 最早的创建时间
+		addressID  int64
 		inv        []int64
 		pid        []int64
 	}
@@ -99,11 +113,47 @@ func (s *service) ListUserShipmentGroups(ctx context.Context, userID int64, page
 				a.createdAt = &t
 			}
 		}
+		if a.addressID == 0 && r.AddressID > 0 {
+			a.addressID = r.AddressID
+		}
 		a.inv = append(a.inv, r.InventoryID)
 		if r.ProductID > 0 {
 			a.pid = append(a.pid, r.ProductID)
 		}
 	}
+
+	addressIDs := make([]int64, 0, len(m))
+	addressIDSet := make(map[int64]struct{}, len(m))
+	for _, a := range m {
+		if a.addressID > 0 {
+			if _, ok := addressIDSet[a.addressID]; !ok {
+				addressIDSet[a.addressID] = struct{}{}
+				addressIDs = append(addressIDs, a.addressID)
+			}
+		}
+	}
+	sort.Slice(addressIDs, func(i, j int) bool { return addressIDs[i] < addressIDs[j] })
+
+	addressMap := make(map[int64]*ShipmentAddressInfo, len(addressIDs))
+	if len(addressIDs) > 0 {
+		addresses, addrErr := s.readDB.UserAddresses.WithContext(ctx).ReadDB().Where(s.readDB.UserAddresses.ID.In(addressIDs...)).Find()
+		if addrErr != nil {
+			return nil, 0, addrErr
+		}
+		for _, addr := range addresses {
+			addressMap[addr.ID] = &ShipmentAddressInfo{
+				ID:        addr.ID,
+				Name:      addr.Name,
+				Phone:     addr.Mobile,
+				Province:  addr.Province,
+				City:      addr.City,
+				District:  addr.District,
+				Detail:    addr.Address,
+				IsDefault: addr.IsDefault == 1,
+			}
+		}
+	}
+
 	items = make([]*ShipmentGroup, 0, len(m))
 	for _, k := range order {
 		a := m[k]
@@ -139,6 +189,7 @@ func (s *service) ListUserShipmentGroups(ctx context.Context, userID int64, page
 			InventoryIDs: a.inv,
 			ProductIDs:   a.pid,
 			Products:     products,
+			Address:      addressMap[a.addressID],
 		})
 	}
 	return items, total, nil