sdd-workflow

IF A SPEC EXISTS, YOU MUST READ IT BEFORE WRITING CODE. IF NO SPEC EXISTS FOR BEHAVIOR CHANGE, YOU MUST CREATE ONE FIRST.

This is not negotiable. This is not optional. You cannot rationalize your way out of this.

This skill IS the SDD pipeline. Reference it once in CLAUDE.md — you do NOT need to list individual steps. The decision tree, phase detection, and transition rules below handle all routing.

Instruction Priority

1. User's explicit instructions (CLAUDE.md, AGENTS.md, direct requests) — highest priority
2. OpenSpec artifacts (proposal.md, specs/, design.md, tasks.md) — the authoritative spec baseline
3. SDD workflow skills — route and enforce process