feat: 优化图片资源删除管理，生图任务列表管理

server/api/products.py

@@ -134,6 +134,18 @@ async def delete_product(
     if product is None:
         raise HTTPException(status_code=404, detail="商品不存在")
     if hard:
+        # 先阻止后台 Worker 回写新生成素材，再删除已有图片与商品记录。
+        from services.jobs import cancel_product_jobs
+        await cancel_product_jobs(str(product.id))
+        assets = (await db.scalars(
+            select(ProductAsset).where(ProductAsset.product_id == product.id)
+        )).all()
+        try:
+            from services.image_assets import get_image_asset_service
+
+            await get_image_asset_service().delete_product_media(str(product.id), assets)
+        except Exception as exc:  # noqa: BLE001
+            raise HTTPException(status_code=502, detail=f"图片存储删除失败，商品未删除：{exc}") from exc
         await db.delete(product)
     else:
         product.stage = Stage.archived
@@ -160,6 +172,9 @@ async def list_assets(
             "type": a.type,
             "source_url": a.source_url,
             "stored_url": a.stored_url,
+            "original_url": a.original_url,
+            "watermark_enabled": a.watermark_enabled,
+            "watermark_config": a.watermark_config,
             "status": a.status.value,
             "width": a.width,
             "height": a.height,