Alembic migration 86c7b1d6a710 adds is_admin BOOLEAN DEFAULT FALSE
to the roles table. Fixes login crash after M-3 change:
psycopg2.errors.UndefinedColumn: column roles.is_admin does not exist
Also adds _ensure_roles_is_admin_column() as an additive migration
safety net for environments that don't run alembic automatically.
To apply: cd backend && source .venv/bin/activate && alembic upgrade head
HSTS (Strict-Transport-Security) is now opt-in via FORCE_HTTPS=true.
Without it enabled, no HSTS header is sent — safe for dev environments
and enterprise deployments behind HTTP-only proxies without HTTPS certs.
When FORCE_HTTPS=true, sends 'max-age=31536000; includeSubDomains'.
Enterprise recommendation: set HSTS at nginx/ingress level instead.
.env.example documents the risk: enabling without certs breaks site access.
Template documents all required env vars:
- AUTH_SECRET_KEY and ENCRYPTION_KEY (secrets)
- DATABASE_URL, AUTH_DATABASE_URL, TASKS_DATABASE_URL (PostgreSQL)
- ALLOWED_ORIGINS, SESSION_SECRET_KEY (optional)
After [SEC:C-4] removed DEV_MODE fallback, the .env must have
AUTH_DATABASE_URL set explicitly or the app crashes at startup.
