_submit printed "HTTP 403" and moved on, and buy/sell then marked the
session done, so one rejected MOC/MOO order was never retried. It now
raises unless Alpaca returns an order id with an accepted status; a 422
duplicate client_order_id counts only when the existing order matches the
payload and is live. The session is marked bought/sold only after every
order is accepted, and the daemon retries the rest on its next tick.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
