feat(store): add store sortOrder and swipeable package gallery

Enable HQ-controlled store list ordering and horizontal multi-image browsing on package detail.

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

server/dukang-api/src/modules/ops/dto/admin-mutate.dto.ts

@@ -145,6 +145,12 @@ export class CreateStoreDto {
   @IsOptional()
   @IsBoolean()
   isTest?: boolean;
+
+  /** 列表排序，越小越靠前 */
+  @IsOptional()
+  @IsNumber()
+  @Min(0)
+  sortOrder?: number;
 }
 
 export class UpdateStoreDto {
@@ -259,6 +265,12 @@ export class UpdateStoreDto {
   @IsOptional()
   @IsBoolean()
   isTest?: boolean;
+
+  /** 列表排序，越小越靠前 */
+  @IsOptional()
+  @IsNumber()
+  @Min(0)
+  sortOrder?: number;
 }
 
 export class CreateStoreAccountDto {