perf: reduce idle polling frequency in instrumentation (30s to 60s)

src/instrumentation.ts

@@ -32,12 +32,12 @@ export async function register() {
 	);
 	const timer = setInterval(() => {
 		void drainFurnitureImports();
-	}, 30000);
+	}, 60000);
 	timer.unref();
 	const { sweepExpiredCloudflareBlocks } = await import("@/lib/cloudflare-api");
 	const cloudflareSweep = setInterval(() => {
 		void sweepExpiredCloudflareBlocks();
-	}, 30000);
+	}, 60000);
 	cloudflareSweep.unref();
 
 	// A deploy starts with an empty in-process cache, so prime the hot public