This band covers the everyday engineering loop before and after merge: human- or agent-assisted review checklists, test and coverage backfill, third-party dependency and license risk, keeping API contracts and docs aligned, and phased stack migrations with sign-off. When you orchestrate skills from the skills library—code review, testing, compliance, API—use these cases as trigger scenarios and delivery templates.
In the case hub, this is the R&D & quality band in the delivery → data → security → growth → general layout (anchor #cat-dev). Each case page states when to trigger, what to deliver, and what “done” means; entries are examples you can merge or split for your team.