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>

apps/mini-user/src/pages/product-detail/index.tsx

@@ -31,6 +31,9 @@ type Product = ProductImageSource & {
   benefitAmount?: number;
   benefitDisplay?: number;
   detailContent?: ProductDetailContentDto | null;
+  allowOnSitePickup?: boolean;
+  allowOnlinePurchase?: boolean;
+  allowCrossCityDelivery?: boolean;
 };
 
 export default function ProductDetailPage() {
@@ -92,6 +95,21 @@ export default function ProductDetailPage() {
     Taro.navigateTo({ url: returnPath });
   }
 
+  async function goOnSitePickup() {
+    if (!productId) return;
+    const returnPath = `/pages/order-confirm-pickup/index?productId=${productId}&qty=1`;
+    if (!isLoggedIn()) {
+      goLogin(returnPath);
+      return;
+    }
+    const ready = await ensurePayReady(returnPath);
+    if (!ready) return;
+    Taro.navigateTo({ url: returnPath });
+  }
+
+  const allowOnline = product?.allowOnlinePurchase !== false;
+  const allowOnSite = !!product?.allowOnSitePickup;
+
   if (!product) {
     return (
       <PageShell variant="scroll" className="product-detail-page">
@@ -199,9 +217,21 @@ export default function ProductDetailPage() {
           <Image className="product-detail-bar-home-icon" src={iconHome} mode="aspectFit" />
           <Text className="product-detail-bar-home-label">首页</Text>
         </View>
-        <View className="product-detail-buy-btn" onClick={() => void goBuy()}>
-          <Text className="product-detail-buy-btn-text">立即购买</Text>
-        </View>
+        {allowOnSite ? (
+          <View className="product-detail-pickup-btn" onClick={() => void goOnSitePickup()}>
+            <Text className="product-detail-pickup-btn-text">现场取货</Text>
+          </View>
+        ) : null}
+        {allowOnline ? (
+          <View className="product-detail-buy-btn" onClick={() => void goBuy()}>
+            <Text className="product-detail-buy-btn-text">立即购买</Text>
+          </View>
+        ) : null}
+        {!allowOnline && !allowOnSite ? (
+          <View className="product-detail-buy-btn product-detail-buy-btn--disabled">
+            <Text className="product-detail-buy-btn-text">暂不可购</Text>
+          </View>
+        ) : null}
       </View>
     </PageShell>
   );