What was done
Codex drove Ghidra through GhidraMCP to rename and map functions in Harvester's unbound DOS/4GW executable, then scaffolded a ScummVM engine. Within about a day the intro videos, first scene and audio worked.
Where the human stepped in
The author unbound the DOS extender by hand in DOSBox, installed an LE loader for Ghidra, wrote the AGENTS.md guidance and reviewed results. The palette still needed fixing at the time of writing.