fix: expose failed products and archive row covers

backend/service/storage_metrics.py

@@ -77,6 +77,7 @@ def main() -> None:
         "known_job_ids": len(known_job_ids),
         "temporary_jobs": [item.model_dump(mode="json") for item in cleanup_report.temporary_jobs],
         "pending_product_ids": [item.product_id for item in cleanup_report.pending_products],
+        "failed_product_ids": [item.product_id for item in cleanup_report.failed_products],
         "reminder_job_ids": cleanup_report.reminder_job_ids,
         "stale_job_count": len(orphaned),
         "reclaimable_bytes": reclaimable,

frontend/src/pages/ProductArchivePage.tsx

@@ -275,9 +275,9 @@ export default function ProductArchivePage({
             {loading && <div className="table-empty">加载中…</div>}
             {!loading && products.length === 0 && <div className="table-empty">暂无产品档案</div>}
             {products.map(product => {
-              const coverId = product.cover_image_id;
-              const rowDetail = detail?.product_id === product.product_id ? detail : null;
-              const rowCover = rowDetail?.images.find(image => image.image_id === coverId);
+              const coverUrl = product.cover_image_id
+                ? `/api/products/${product.product_id}/images/${product.cover_image_id}`
+                : "";
               return (
                 <button
                   key={product.product_id}
@@ -285,8 +285,8 @@ export default function ProductArchivePage({
                   onClick={() => setSelectedId(product.product_id)}
                 >
                   <span className="product-archive-thumb">
-                    {rowCover?.image_url
-                      ? <img src={rowCover.image_url} alt={product.name} />
+                    {coverUrl
+                      ? <img src={coverUrl} alt={product.name} />
                       : <span className="product-archive-thumb-empty">暂无预览图</span>}
                   </span>
                   <span className="product-archive-row-body">