fix(product-create): 新建商品上传健壮性 — loading/失败提示/等齐再关抽屉

- 原 close() 在图片上传之前执行 + 上传无 catch → 失败静默,商品建了却无图
- 改:create 后用 Promise.all 等全部图传完,saving 态贯穿整个上传(抽屉不提前关,
  「创建中…」可见)
- 上传失败 → flash「图片上传失败 · 已保留可重试」,不关抽屉
- createdRef 暂存已建商品:重试只补传图,不重复建商品
- onCreate 失败也给提示(不再静默)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

core/frontend/src/components/product-create-drawer.tsx

@@ -48,6 +48,8 @@ export function ProductCreateDrawer({ open, close, onCreate, onUploadImage, onCr
   const [toast, setToast] = useState<{ title: string; sub: string } | null>(null);
   const imgInputRef = useRef<HTMLInputElement | null>(null);
   const toastTimer = useRef<ReturnType<typeof setTimeout> | null>(null);
+  // 已建商品句柄:onCreate 成功但图片上传失败时暂存,重试只补传图不重复建商品
+  const createdRef = useRef<Product | null>(null);
 
   function flash(title: string, sub: string) {
     if (toastTimer.current) clearTimeout(toastTimer.current);
@@ -68,6 +70,7 @@ export function ProductCreateDrawer({ open, close, onCreate, onUploadImage, onCr
     setImages((list) => { list.forEach((item) => URL.revokeObjectURL(item.url)); return []; });
     setDragOver(false);
     setTitleError(false);
+    createdRef.current = null;
   }
   // 每次打开抽屉时复位表单(含商品库「继续创建商品」二次打开)
   useEffect(() => { if (open) resetForm(); }, [open]);
@@ -132,23 +135,35 @@ export function ProductCreateDrawer({ open, close, onCreate, onUploadImage, onCr
     setSaving(true);
     try {
       const files = images.map((item) => item.file);
-      const created = await onCreate({
+      // 若上次已建好商品(仅图片上传失败),本次重试只补传图,不重复建商品
+      let created = createdRef.current;
+      if (!created) {
+        created = (await onCreate({
           title: name,
           category: category || catOptions[0],
           target_audience: target.trim() || undefined,
           selling_points: finalBullets.map((item, index) => ({ title: item, detail: item, sort_order: index }))
-      });
-      close();
-      if (!created) return;
-      // 把抽屉里选的主图逐张随商品一起上传持久化(否则卡片/详情看不到图)
+        })) || null;
+        if (!created) { flash("商品创建失败", "请稍后重试"); return; } // 不静默:建库失败也给提示
+        createdRef.current = created;
+      }
+      // 主图随商品上传持久化:等全部传完再关抽屉(原先 close 在上传前 + 无 catch → 图悄悄传失败,商品却已建)
       if (files.length && onUploadImage) {
-        for (let i = 0; i < files.length; i += 1) {
+        try {
+          await Promise.all(files.map((file, i) => {
             const fd = new FormData();
-          fd.append("file", files[i]);
+            fd.append("file", file);
             fd.append("name", `${name}-主图${files.length > 1 ? `-${i + 1}` : ""}`);
-          await onUploadImage(created.id, fd);
+            return onUploadImage(created!.id, fd);
+          }));
+        } catch {
+          // 不关抽屉、不重复建商品:留着让用户点「创建商品」重试上传(网络恢复后即成)
+          flash("图片上传失败", "已保留 · 点「创建商品」可重试上传");
+          return;
         }
       }
+      createdRef.current = null;
+      close();
       onCreated?.(created);
     } finally {
       setSaving(false);