Spec Governed Development

Implement code changes from reconciled project PRDs, ADRs, traceability matrices, executable acceptance scenarios, or a project-specs-reconciliation implementation handoff. Use after project-specs-reconciliation has created or updated the governing specs, or when the user explicitly says the specs are already reconciled. This skill owns the spec-to-test-to-code workflow and composes with language-specific TDD, BDD, and red-green-refactor skills without replacing their framework-specific guidance.

Create or update conventional project PRD and ADR documentation before implementation. Use when Codex needs to reconcile requested behavior, requirements, acceptance criteria, architecture decisions, technical tradeoffs, or implementation constraints into Product Requirements Documents under docs/PRD or a user-provided scoped PRD directory and Architectural Decision Reports under docs/ADR or a user-provided scoped ADR directory. This skill is responsible for project specification documentation and hands off code execution to project-specs-implementation.