Trace ids are sequential integers and the label table is the one thing the
routing heads will be fitted on, so an ungated POST let anyone past the
transport gate mislabel turns the owner never touched.
The cost argument for leaving it open does not hold: he tapped to send the
turn he is correcting, so the session is already up when the buttons appear.
Two buttons' worth of cost: wrong, or wrong and it should have been this.
The second is worth much more and is not required to give the first, so a
turn marked wrong with no target still lands as a usable negative.
The target is one of the seven intents, never free text: an unroutable label
would enter the one table V-632 fits prototypes from.
/api/correct is not behind the step-up gate. It reaches no router, no model
and no act path, and a correction that costs a passkey tap is one that does
not get made.
claude