Use this skill whenever delegating work to subagents — whether a single Task call or a full team via TeamCreate. Guides delegation, task decomposition, agent selection, and coordination. Covers when to spawn architect (design decisions, trade-offs), researcher (explorations, technical investigation), developer (FEATURE specs and code), tech-writer (documentation), qa (post-implementation validation), and architecture-critic (stress-testing architect output). Trigger on any subagent spawn, team creation, multi-agent coordination, or parallel work request.