feat(api): set maxDuration for document parsed events route

Define maxDuration as 300 seconds for the parsed events API route to explicitly
control execution timeouts during long-running PDF layout processing. This
ensures more predictable serverless behavior for streaming operations.

src/app/api/documents/[id]/parsed/events/route.ts

@@ -17,6 +17,7 @@ import type { PdfLayoutJobResult, WorkerOperationEvent, WorkerOperationState } f
 
 export const dynamic = 'force-dynamic';
 export const runtime = 'nodejs';
+export const maxDuration = 300;
 
 const SSE_KEEPALIVE_MS = 15_000;
 const SSE_RESYNC_INTERVAL_MS = 30_000;