MDO expansion for LREkit, differnetaible hardware mass ledger and realted MDO modules and snapshots, updates to CEA, desing, injector, pumps and nozzle code, and JAX assembly + thermal plmbing. chamber/injector/closeout/landmass inegrated from resolved geometry, resolved qudrature bugs, austo sized bolted interefacs, chamber laeenght convention bugs fixed and aligned to SP-125 (official nasa docs), taperped jeacking sizing and new sutrcutrl contstants for more realistic simulation of real world ocomponents.. new cli flags, like –engine-mdo, and –engine-dmo-opitimize.