- Renamed misleading _ue8m0_to_float32 to _block_scale_to_float32
(our checkpoint uses float8_e4m3fn, NOT E8M0)
- Removed dead is_scale_e8m0 property (never referenced)
- Removed dead _block_scale_to_float32 copy in MegaMoEExperts class
- Cleaned up stale E8M0/UE8M0/shift-by-23 comments
- Simplified E8M0 assertion to ValueError (not assert False)
- Updated DeepseekV4FP8Config docstring for NVFP4