Without MustInit(), viper.AutomaticEnv() is never called, so Viper
cannot read environment variables injected by K8s secrets (envFrom).
This caused DATABASE_URL to always appear empty in deployed services,
forcing them into standalone/in-memory mode even when a database was
provisioned.
os.Getenv() calls like JWT_SECRET worked fine (direct syscall).
Viper-backed reads like DATABASE_URL did not (require AutomaticEnv).
Added pkgconfig.MustInit() call at the top of main() in both the
service component template and the full-monorepo example-api.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>