SDD

Use when you want a disciplined, spec-driven path from a feature idea to shipped, verified software — the SDD dispatcher and front door, in any language. States the method, reads the accompaniment dial from 02-DOCS, and routes to the right phase: constitution -> specify -> clarify -> plan -> tasks -> analyze -> implement -> verify -> review -> ship, with debug / worktrees / parallel on demand. Use it to start a feature, to govern the whole flow, or when unsure which phase you are in. NOT a single phase itself (it dispatches), NOT the workspace harness (that is `harness`), NOT a stack build skill.