Adds a GitHub Actions workflow that builds and pushes backend and nginx
images to GitHub Container Registry on every merge to main and on
releases. Adds docker-compose.ghcr.yml for end users who want to deploy
without cloning the repo, and updates the README with Quick Deploy
instructions alongside the existing build-from-source guide.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- SECURITY.md with vulnerability disclosure policy and self-hosting guidance
- Dependabot config for weekly dependency updates (npm, Docker, Actions)
- ESLint v9 flat config for frontend and backend, with eslint-plugin-security
- GitHub Actions CI: lint, typecheck, build, and npm audit on every push/PR
- CodeQL workflow for automated security scanning (runs on push and weekly)