I did add a disk brake to the front, i'll have to update this later.
it has a very limited what you could i guess call "regen" but it's not got any braking power. THat was originally my plan but i got a cheap as shit controller
anyway, basically the lights all run off the battery, and it's set up now so that if the battery is dead the front hub will power the lights. kinda regen, but not a regen braking. I don't think it tries to back charge when the battery is still charged, maybe it does... i wonder. TBH i dont really understand everything i'm doing here - does spinning the hub over its max RPM while still trying to give it power wind up generating charge and slowing me down or compromising the electronics? Maybe!