A V4 step's input side is what SETTLE or SETTLE_ALL names, else the one
currency its swap actions spend and never buy; its output side is what
TAKE or TAKE_ALL names, else the one they buy and never spend. Amount
and Min. received come from those actions, summed where several state
one. An unread swap action leaves the sides to SETTLE, SETTLE_ALL, TAKE
and TAKE_ALL, with no figure. A step with a swap action always sets the
output side, sets the input side only when no earlier step set it, and
sets a side its rules leave unknown as unknown with no figure.
SWAP_EXACT_OUT is now read as spending its first path entry, not its
last.
Model: opus-5-5
sneak