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Package config provides a generic configuration loader that unmarshals environment variables into structured Go types.

Package apperr provides a custom error type for the application, supporting machine-readable codes, human-readable messages, and contextual details including operation tracing.

Package json provides a wrapper around the standard encoding/json package, offering a Serializer type for consistent JSON handling.

Package lifecycle provides a manager for coordinating the graceful shutdown of multiple components in the application.

Package logger provides structured logging functionality using slog.

Package migrator provides utilities for database schema migrations and data seeding.

Package must provides helper functions that log a fatal error and exit the application when a critical operation fails or a requirement is not met.

Package server defines the core interfaces and types for building and managing HTTP servers within the application.

Package echoserver implements the server.Server interface using the Echo web framework.