Finance
Filing prep, re-derived independently
Statutory filing prep was a manual assembly job every cycle, and the only check on it was the person who built it reading their own work.
0 cell differences against the human-led deliverable; 4 real issues caught
What we built
We rebuilt the preparation as an independent second derivation from source data, then diffed it against the human deliverable. Agreement is the pass condition; every difference is investigated rather than reconciled away.