USDC escrowed for the premium and fees; 0 for a sell. Unused budget returns at the fill.
The order's worst-case cash need against the market's spare cash.
Whether the builder added rebalance_expiry_cash after the enqueue.
Sells only: the cash need is above spare cash, so the sell may be refunded in full (reason 8) unless the market is funded before the fill.
The flat order fee, charged once at enqueue.
τ, deadline and cutoff for an order placed now, from the local clock.
What enqueue debits: budget + order fee.
What a queued order builder previews alongside the transaction. Display only.