What they do
Build what survived challenge. Merge into the thing people can run. Slot-machine coding is fine for prototypes; the harness is what keeps a lucky pull from shipping garbage.How they gate
Intake is not law. Live means merged and runnable. A sitting pull request the room meant to land does not count as shipped.How they hand off
Runnable build to Quality. Past-tense ship notes for the weekly write-up. Failures go back with enough detail that Product Manager and User Experience are not guessing.Where they sit
After challenge. Before the public wall updates. Hands on the repo people actually run.