feat(product-center): implement Figma-designed UI, upload module, and website tests

- Redesign website homepage & product-center per Figma (fonts, logos, hero/footer/customer cases)
- Add API upload module (multer) with static serving for uploads/public assets
- Add OriginGood.delisted flag and SDS request retry logic
- Add admin ImageUpload component and goods import/upload flows
- Add vitest suite for website components and composables (32 tests)
- Add skills, docs, plans and PRODUCT.md

apps/website/server/api/backend/goods.get.ts

@@ -1,5 +1,8 @@
 export default defineEventHandler((event) => {
   const config = useRuntimeConfig();
-  const query = getQuery(event);
+  const requestUrl = event.node.req.url ?? '/';
+  const query = Object.fromEntries(
+    new URL(requestUrl, 'http://localhost').searchParams.entries(),
+  );
   return $fetch(`${config.public.backendUrl}/public/goods`, { query });
 });