Remove next/cache usage (use cache, cacheLife, cacheTag, cacheComponents)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01F22Ms5Cxam5UHyxaCrtZzu

lib/storefront-static.ts

@@ -14,9 +14,8 @@ import { resolveStorefrontConfig } from "./storefront-config";
  * sitemap, related products, shop analytics GID) fetch through this client.
  * Only the cart seed uses the per-buyer `getStorefrontClient()`.
  *
- * Caching lives at the `use cache` boundary (cache-points keyed by serializable
- * inputs). The `cache:` option is never passed to `graphql()` — Next native
- * data cache + `cacheLife`/`cacheTag` replace the Oxygen sub-request LRU.
+ * The `cache:` option is never passed to `graphql()` (no Oxygen sub-request
+ * LRU in this Next.js port).
  */
 const requestContext = createShopifyRequestContext({
   request: { headers: new Headers() },