8488a53e3b
Major rewrite: - Queue now processes batches: addToCart×N → saveMetadata×N → ONE submitOrder → poll → download ALL documents → store in MinIO - Removed unique constraint on orderId (shared across batch items) - Added step=download to test endpoint: downloads PDFs from 5 existing orders (9685480-9685484) and stores in MinIO - step=order now uses enqueueBatch for 2 test parcels (61904, 309952) as ONE ePay order instead of separate orders Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>