incremental-delivery

Build large multi-part deliverables — multi-file projects, migrations, long documents, N-of-the-same-thing work — in verified increments with dependency ordering, checkpoints, a running state note, and consistency sweeps. Trigger this when a task will produce 3+ files, spans more sub-deliverables than fit in one pass, involves repeating a pattern across many sites (endpoints, parsers, pages, records), or is explicitly requested to be done incrementally or resumably. Do NOT trigger for single-file changes (implementation-standards suffices) or for the initial breakdown of an ambiguous request (use task-planning first — this skill governs execution after the plan exists).