├─ app              common application/service helpers
├─ buildinfo        show version info that is embedded in the binary
├─ config           config file reading from environment variables
├─ database         PostgreSQL client and struct scanner
├─ env              test/dev/staging/prod environment defines
├─ envfile          loads environment variables from env files
├─ httpclient       HTTP client utilities and proxy configuration
├─ jsonutils        additional helpers for JSON processing 
├─ log              fast and structured logging based on slog
├─ pointer          create a pointer to a value
├─ set              generic set data structure with set operations