odometer: a training speedrun metered per operation, with coding agents on the record table

Training speedruns score wall-clock time, so a record measures the hardware along with the idea. odometer replaces the clock with a meter: every tensor operation costs ticks priced from its shape alone, so the same seeds read the same score on different machines. Coding agents competed on the record table in a registered series. No person has run the track yet, so this does not compare agents with people.