//! Dev module - Support code for development mode
//!
//! This module provides domain types, validation, and helpers for the dev command.
//! It follows the 3-layer architecture:
//! - Handlers use this module for orchestration
//! - Services use this module for business logic
//! - This module provides reusable, testable abstractions
//!
//! # Architecture
//!
//! ```text
//! handlers/dev.rs (orchestration)
//! ↓
//! services/* (business logic)
//! ↓
//! dev/ module (domain types, validation, helpers)
//! ```
// Re-exports for convenience (none currently needed)