How I Set Up Codex for Spec-Driven Development

I wanted Codex to feel like a reliable teammate, not a fast autocomplete that occasionally rewrites half my repo. The shift that worked for me was simple: No approved spec, no code changes. This post is my real setup flow based on my init.md blueprint in spec-driven-template-codex , plus how I actually use it day to day when building features. The System in One Flow User request | v spec-architect drafts task spec | v human approval gate | v agent-router picks specialist | v specialist implement