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/app-shell.tsx

@@ -17,9 +17,9 @@ import { Providers } from "./providers";
 
 /**
  * Async server shell that owns the per-request (dynamic) reads: the cart seed
- * + the shop analytics GID. With `cacheComponents: true`, uncached/dynamic data
- * accessed in a Server Component must sit inside a `<Suspense>` boundary so the
- * static HTML shell prerenders and the per-buyer parts stream
+ * + the shop analytics GID. The dynamic data access in this Server Component
+ * sits inside a `<Suspense>` boundary so the static HTML shell prerenders and
+ * the per-buyer parts stream
  * (`next/server` `connection()` + `headers()`/`cookies()` are per-request).
  *
  * Rendered inside `<Suspense>` from the root layout. `await connection()`