An input row now starts from its message and ends as the argument the code
takes it as ("as prompt"); an output keeps its key on top and the message
below. The name the code uses is muted text with a pencil while it follows the
message's last segment, and a field only when it differs. Device Follows ports
get the same order (message, then the port driven). A list port's item type
moves to the second row so it no longer squeezes the name, two ports deriving
one name get a warning, and the rows rebuilt use 44px touch targets on phones.
The stored node spec is unchanged.
stroblme
2e0ba32124