feat(catalog): add product fulfillment flags and auto SKU

Enable online/cross-city/on-site purchase switches with trade gates, HQ and proxy UI, and server-generated DK SKUs.

Co-authored-by: Cursor <cursoragent@cursor.com>

packages/shared-types/src/catalog.ts

@@ -27,6 +27,10 @@ export interface ProductDto {
   detailContent?: ProductDetailContentDto | null;
   /** 是否允许现场取货下单 */
   allowOnSitePickup?: boolean;
+  /** 是否允许配送到址（同城线上购买） */
+  allowOnlinePurchase?: boolean;
+  /** 是否允许跨城配送 */
+  allowCrossCityDelivery?: boolean;
 }
 
 export interface ProductDetailFeatureDto {

packages/shared-types/src/trade.ts

@@ -85,6 +85,8 @@ export type PartnerProxyOrderProductOption = {
   benefitAmount: number | null;
   coverUrl?: string | null;
   allowOnSitePickup?: boolean;
+  allowOnlinePurchase?: boolean;
+  allowCrossCityDelivery?: boolean;
 };
 
 export type PartnerProxyOrderPromoOption = {