- status returns { setupComplete, dbName } from process.env.DB_NAME (null fallback)
- only the DB name; never DB_HOST/DB_USER/DB_PASSWORD
- SetupStatusResponse carries dbName?: string | null for the PWA read-only field
- status returns { setupComplete, dbName } from process.env.DB_NAME (null fallback)
- only the DB name; never DB_HOST/DB_USER/DB_PASSWORD
- SetupStatusResponse carries dbName?: string | null for the PWA read-only field