hyperliquid-advanced

# Hyperliquid advanced actions Uses the same header as `hyperliquid-orders` (`info`, `exchange`, `ACCOUNT`, `round_px`, `round_sz`, `new_cloid`). Everything that signs is Execution Trader only, on a ticket. ## Dead-man's switch (`scheduleCancel`) Tells the exchange to cancel **all** of the account's open orders at a future time unless you push the time out or clear it. Useful when the desk runs a watch that could die while resting orders sit on the book. The user asks for it explicitly; the report states the time. ```python from hyperliquid.utils.signing import get_timestamp_ms res = exchange.schedule_cancel(get_timestamp_ms() + 10 * 60 * 1000) # 10 minutes out; must be >= 5 s in the future res = exchange.schedule_cancel(None) # clear it ``` TypeScript: `await exchange.scheduleCancel({ time: Date.now() + 600_000 })`; omit `time` to clear. Limits: at most 10 triggers per day per account (resets 00:00 UTC). **It cancels protective stops too, and it is not position-aware.** If it fires while a position is open, that position is left naked on the exchange and nothing re-arms it automatically. So: it is for a desk with resting orders and no position, or for a user who has explicitly accepted that outcome for this account. Do not arm it as routine hygiene while a position is open. If it does fire with a position open, that is an unprotected position the moment it lands - declare it and run playbook D in `desk-incident-response` at priority...