A small experiment. We gave a current coding agent the role of "helpful assistant on a Postgres web app" and asked it, in forty separate requests, for the migrations a team writes in a normal quarter: add a column, add an index, add a foreign key, change a type, rename, drop, backfill, truncate, vacuum. No hints about safety, no linter in the loop, first draft only. Then we ran the eighteen rules the free CLI bundles over the forty files. The numbers Result Files ...