Utils

lib/config.ts

• Zod schema for NODE_ENV and INGEST_API_KEY. Use getEnv() and helpers isProd/isTest/isDev.

lib/error-handler.ts

• Centralize error to JSON translation (placeholder in repo).

lib/logger.ts

• Minimal logger wrapper (placeholder). Prefer structured logs and avoid sensitive data.

TODO: Expand error handling and logging cross‑cutting docs as features grow.