feat(trade): add on-site pickup order flow

Product flag, ON_SITE_PICKUP delivery, mini confirm/receive pages; pay skips warehouse auto-advance.

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

packages/domain/src/index.ts

@@ -8,11 +8,17 @@ export function calcBenefitAmount(product: ProductPricing): number {
 }
 
 export function validateMinPurchase(
-  deliveryType: 'LOCAL' | 'CROSS_CITY',
+  deliveryType: 'LOCAL' | 'CROSS_CITY' | 'ON_SITE_PICKUP',
   quantity: number,
   localMinQty: number,
   crossMinQty: number,
 ): { ok: boolean; message?: string } {
+  if (deliveryType === 'ON_SITE_PICKUP') {
+    if (quantity < 1) {
+      return { ok: false, message: '现场取货至少购买 1 瓶' };
+    }
+    return { ok: true };
+  }
   const min = deliveryType === 'LOCAL' ? localMinQty : crossMinQty;
   if (quantity < min) {
     return {