feat(pickup): 线下提号支持扩展字段店铺管理CRUD及时间筛选

- 线下提号创建表单扩展：增加「操作人」、「第三方单号」、「下单金额」、「押金金额」字段，重构弹窗布局为紧凑双列/三列金额卡片排布，消除过度垂直滚动并默认预填操作人
- 店铺管理 CRUD：新增 pickup_shops 配置表与配套 API，支持在提号页面直接管理店铺（增删改查、启用/禁用、筛选），下拉选项自动优先加载活跃配置店铺并兼顾历史店铺
- 列表时间范围筛选：增加精确到秒的「日期+时间」时间范围选择器，支持快捷时段与后端时间范围过滤
- 生产环境数据核查：只读提取线上全部 61 项历史提号店铺名称与单量分布，完整整理沉淀至实施文档供后续映射规则参考
- 验证方式：执行并通过全套端到端代码门禁（scripts/check.sh：SQL约束、go vet、go build、MySQL真实测试库单元测试及覆盖率、vue大小检查、prettier、eslint、vue-tsc及vite构建）

backend/internal/modules/pickup/dto.go

@@ -25,6 +25,9 @@ const (
 	FinancialAdjustmentStatusSettled     = "settled"
 	FinancialAdjustmentStatusPending     = "pending"
 	FinancialAdjustmentStatusRecovery    = "recovery_pending"
+
+	PickupShopStatusActive   = "active"
+	PickupShopStatusDisabled = "disabled"
 )
 
 var (
@@ -39,6 +42,8 @@ var (
 	ErrFinancialAdjustmentInvalid      = errors.New("financial adjustment invalid")
 	ErrFinancialAdjustmentNotFound     = errors.New("financial adjustment not found")
 	ErrFinancialAdjustmentCannotSettle = errors.New("financial adjustment cannot be settled")
+	ErrPickupShopNotFound              = errors.New("pickup shop not found")
+	ErrPickupShopNameExists            = errors.New("pickup shop name already exists")
 )
 
 type PickupDTO struct {
@@ -53,12 +58,16 @@ type PickupDTO struct {
 	OwnerID                   uint64         `json:"owner_id"`
 	OwnerPhone                string         `json:"owner_phone"`
 	AdminID                   uint64         `json:"admin_id"`
+	Operator                  string         `json:"operator"`
 	Platform                  string         `json:"platform"`
+	ThirdPartyOrderNo         string         `json:"third_party_order_no"`
 	ShopName                  string         `json:"shop_name"`
 	AccountSource             string         `json:"account_source"`
 	SourceChannel             string         `json:"source_channel"`
 	SettlementMode            string         `json:"settlement_mode"`
 	ListingPriceCent          int64          `json:"listing_price_cent"`
+	OrderAmountCent           int64          `json:"order_amount_cent"`
+	DepositAmountCent         int64          `json:"deposit_amount_cent"`
 	OwnerPriceCent            int64          `json:"owner_price_cent"`
 	WebsiteProfitCent         int64          `json:"website_profit_cent"`
 	ProfitAmountCent          int64          `json:"profit_amount_cent"`
@@ -98,11 +107,15 @@ type FinancialAdjustmentDTO struct {
 }
 
 type CreateRequest struct {
-	ListingID        uint64 `json:"listing_id" binding:"required"`
-	Platform         string `json:"platform"`
-	ShopName         string `json:"shop_name" binding:"max=100"`
-	ProfitAmountCent int64  `json:"profit_amount_cent"`
-	Remark           string `json:"remark"`
+	ListingID         uint64 `json:"listing_id" binding:"required"`
+	Operator          string `json:"operator" binding:"max=64"`
+	Platform          string `json:"platform"`
+	ThirdPartyOrderNo string `json:"third_party_order_no" binding:"max=128"`
+	ShopName          string `json:"shop_name" binding:"max=100"`
+	OrderAmountCent   int64  `json:"order_amount_cent" binding:"min=0"`
+	DepositAmountCent int64  `json:"deposit_amount_cent" binding:"min=0"`
+	ProfitAmountCent  int64  `json:"profit_amount_cent"`
+	Remark            string `json:"remark"`
 }
 
 type CompleteRequest struct {
@@ -143,6 +156,43 @@ type AdminPickupQuery struct {
 	ShopName                string
 	AccountSource           string
 	OfflineSettlementStatus string
+	Operator                string
+	ThirdPartyOrderNo       string
+	StartTime               *time.Time
+	EndTime                 *time.Time
+}
+
+type PickupShopDTO struct {
+	ID        uint64    `json:"id"`
+	Name      string    `json:"name"`
+	Platform  string    `json:"platform"`
+	Status    string    `json:"status"`
+	SortOrder int       `json:"sort_order"`
+	Remark    string    `json:"remark"`
+	CreatedAt time.Time `json:"created_at"`
+	UpdatedAt time.Time `json:"updated_at"`
+}
+
+type CreatePickupShopRequest struct {
+	Name      string `json:"name" binding:"required,max=100"`
+	Platform  string `json:"platform" binding:"max=32"`
+	Status    string `json:"status" binding:"omitempty,oneof=active disabled"`
+	SortOrder int    `json:"sort_order"`
+	Remark    string `json:"remark" binding:"max=255"`
+}
+
+type UpdatePickupShopRequest struct {
+	Name      string `json:"name" binding:"required,max=100"`
+	Platform  string `json:"platform" binding:"max=32"`
+	Status    string `json:"status" binding:"required,oneof=active disabled"`
+	SortOrder int    `json:"sort_order"`
+	Remark    string `json:"remark" binding:"max=255"`
+}
+
+type PickupShopQuery struct {
+	Keyword  string
+	Platform string
+	Status   string
 }
 
 type SellerPickupQuery struct {