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/vitest.config.ts

@@ -0,0 +1,18 @@
+import vue from '@vitejs/plugin-vue';
+import { fileURLToPath } from 'node:url';
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  plugins: [vue()],
+  resolve: {
+    alias: {
+      '~': fileURLToPath(new URL('./app', import.meta.url)),
+      '@': fileURLToPath(new URL('./app', import.meta.url)),
+    },
+  },
+  test: {
+    environment: 'happy-dom',
+    globals: true,
+    setupFiles: ['./test/setup.ts'],
+  },
+});