wip(asset): fix optional fields and build mesh
wip(asset): fix optional fields and build mesh

stardazed/stardazed-tx,zenmumbler/libzm,zenmumbler/stardazed-tx,zenmumbler/stardazed-tx,stardazed/stardazed,zenmumbler/libzm,stardazed/stardazed-tx,zenmumbler/stardazed-tx,zenmumbler/stardazed-tx,stardazed/stardazed-tx,stardazed/stardazed,zenmumbler/libzm,zenmumbler/libzm