Frankly, I cannot recommend to use Snapmaker Orca for U1 now - there is no U1 profile yet (check your GitHub ). At the moment, the only slicer with some U1 profiles is the original Orcaslicer (Nightly build).
Again, please consider to contribute to the original Orcaslicer only and not to continue your own fork. I am almost sure that the (potential) sponsoring can have more benefits for Snapmaker than own fork of slicer, which is almost unknown outside the current Snapmaker’s community and (my estimation) used by few users.
). At the moment, the only slicer with some U1 profiles is the original Orcaslicer (Nightly build).