wad_builder-1.0.0 is not a library.
wad_builder — generic "raw asset → engine format → vz-patch.wad" builder.
Jumping off from dlc_port/cube_mod, this crate adds the build-side
editing those lack: replacing a Lua script inside a multi-entry scripts_vz
block (compile-from-source → re-wrap BINN/UCFX → fix CSUM + chunk_size).
identity-test is the correctness oracle: it proves the parse/serialize and
CSUM model reproduce a real block byte-for-byte before any edit is applied.