rdash-env-var-naming-drift-breaks-prod-boot

docker-compose.prod.yml and k8s manifests used env var names the app never reads (e.g. RDASH_SESSION_SECRET, DATABASE_URL, REDIS_URL) while the app reads RDASH_JWT_SECRET, RDASH_DATABASE_URL, RDASH_REDIS_URL via RDASH_ prefix. Without fixing, the app boots in production with all dev defaults silently — no error, no warning. Always audit env var names end-to-end from app Settings class to compose/k8s injection before any deploy.