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

app/cart/page.tsx

@@ -26,9 +26,9 @@ export const metadata: Metadata = {
  * `CartProvider` would create a divergent inner store vs the root-rendered
  * `CartDrawer` — mutations would not reflect across them.
  *
- * `force-dynamic` is not allowed with `cacheComponents: true`; the root layout
- * already makes every route dynamic via `cookies()`/`headers()` in the cart
- * seed. Reachable via the footer `/cart` link (no-JS fallback).
+ * No `force-dynamic` needed; the root layout already makes every route
+ * dynamic via `cookies()`/`headers()` in the cart seed. Reachable via the
+ * footer `/cart` link (no-JS fallback).
  */
 export default function CartPage() {
   return (