Add Node.js/Express backend, PostgreSQL, email/password auth, and Docker deployment
- Add Express server (server/) with JWT auth, rate limiting, and all /api/auth/* routes
- Add PostgreSQL schema and migration runner (3 migrations)
- Add email/password login, registration, password reset via Mailgun
- Validate MSAL SSO ID token server-side, upsert user into DB
- Rewrite auth.js: 8-panel auth UI (SSO, login, register, forgot, reset, verify)
- Expand index.html auth overlay with full multi-view auth UI
- Add apiFetch() helper in script.js with auto token refresh
- Add Dockerfile, docker-compose.yml, .dockerignore for containerised deployment
- Add idempotent deploy.sh: git pull, docker build, migrate, copy static to /var/www
- Add .gitignore
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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