- Add setup.sh interactive script for guided .env configuration
- Add env var validation and placeholder detection to docker-entrypoint.sh
- Fix migration count (52 → 63) in SELF-HOSTING.md
- Align Docker image name to ghcr.io/erp-mafia/gnubok in docker-compose.yml
- Update README and SELF-HOSTING.md to reference setup.sh
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>