Agent Skills: build-verify-loop

Self-iterating autonomous loop where the main agent acts as a pure orchestrator, spawning isolated Implementor and Critic subagents in rounds until the artifact converges, an iteration cap is reached, or human escalation is needed. Domain-agnostic — works for code, documents, plans, designs, copy, specs, proposals, or anything with an iterable artifact and explicit acceptance criteria. Also addressable by the short alias "bvl".