refactor: marketplace state management (#30702)

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

web/context/query-client-server.ts

@@ -0,0 +1,16 @@
+import { QueryClient } from '@tanstack/react-query'
+import { cache } from 'react'
+
+const STALE_TIME = 1000 * 60 * 30 // 30 minutes
+
+export function makeQueryClient() {
+  return new QueryClient({
+    defaultOptions: {
+      queries: {
+        staleTime: STALE_TIME,
+      },
+    },
+  })
+}
+
+export const getQueryClientServer = cache(makeQueryClient)