You want to build a Next.js dashboard, using multiple Codex CLI agents run via codex exec in parallel, with clear roles, minimal overlap, and a concrete workflow from spec → implementation → tests.
- New or existing Next.js app, App Router + TypeScript, lives at <PROJECT_ROOT> (you can adjust).
- Node/npm/yarn/pnpm already installed; npx create-next-app@latest is available if you start from scratch.
- Codex CLI is installed and authenticated; codex exec "" runs headless tasks in your shell. (developers.openai.com (https://developers.openai.com/codex/noninteractive/?