/implementation — Spec-Driven Implementation Skill

Purpose

Fast, spec-driven implementation. Reads the spec produced by /spec, skips codebase exploration (map already exists), builds a GSD-style phase roadmap, implements TDD per phase. Designed to run after /spec — either immediately or in a separate session while another issue is being specced in parallel.

Trigger

/implementation --issue N [--fast] [--no-branch]

• --issue N — required. Finds docs/specs/*-issue-{N}.md automatically.
• --fast — no questions, auto-approve design decisions from spec.
• --no-branch — stay on current branch.