Environment Configuration

Use this skill as the repository's narrower application-config and .env compatibility skill.

The job is to make app configuration clear and safe across environments:

• decide what belongs in env vars,
• structure .env files and precedence rules,
• validate required config,
• separate public/private values,
• reduce config drift between local, CI, staging, and production,
• make secret handoff explicit.

Read references/env-patterns.md and references/scope-boundaries.md before unusual cases or when deciding whether the real need belongs in system-environment-setup.

If the user mainly needs:

• toolchains, local services, Docker Compose, devcontainers, or onboarding → route to system-environment-setup
• deployment or CI secret wiring → pair with deployment-automation
• security architecture or policy → pair with security-best-practices