build-next

Two-mode skill for structured software project development using the harness engineering pattern. **Mode 1 — Project Architect** (`/architect` or starting a new project): Interview the user about their project, guide them through architecture and technology decisions (language, framework, storage, build tooling, CI/CD, testing), record Architecture Decision Records, then generate three files: CLAUDE.md (agent harness), docs/ARCHITECTURE.md, and a phased docs/PROJECT_STATUS.md with implementation phases, per-phase file lists, test requirements, and done criteria. **Mode 2 — Build Next** (`/build-next` or "implement the next phase"): Read docs/PROJECT_STATUS.md, find the first incomplete (⬜) phase, implement exactly that one phase, run tests, verify they pass, then update the status document. Enforce: one phase per session, tests must pass before marking complete, conventional commit message. Use this skill whenever: the user is starting a greenfield project and needs architecture guidance; the user says "/architect"; the user says "/build-next" or "implement the next phase" or "work on the next phase"; the user references PROJECT_STATUS.md and wants to make progress; the user wants to break a project into implementation phases.