//! Domain layer — pure entities, value objects, repository traits, and service interfaces.
//!
//! This is the innermost layer of the Clean Architecture onion. It has **zero
//! infrastructure dependencies** — all I/O is expressed through repository
//! traits defined in [`repository`], and business operations through service
//! traits in [`service`].
//!
//! ## Sub-modules
//! - `app_config` — provider configuration model (`AppConfig`, `ProviderConfig`, `ModelRole`)
//! - `conversation` — conversation entity + chat message model (`Conversation`, `ChatMessage`)
//! - `edit_log` — edit log model (`EditLog`, `EditLogEntry`)
//! - `memory` — memory file model (`Memory`)
//! - `settings` — application settings model (`Settings`, `InternetMode`, `SettingsFlags`)
//! - `repository` — trait definitions for all persistence adapters
//! - `service` — trait definitions for all application services
//!
//! ## Key Design Principle
//! Domain types are plain Rust structs with `serde` for serialisation.
//! They contain no I/O, no framework imports, and no side effects.

pub mod app_config;
pub mod commands;
pub mod conversation;
pub mod edit_log;
pub mod error;
pub mod memory;
pub mod repository;
pub mod service;
pub mod settings;

pub use app_config::AppConfig;
pub use app_config::ModelRole;
pub use app_config::ProviderConfig;
pub use conversation::Conversation;
pub use edit_log::EditLog;
pub use edit_log::EditLogEntry;
pub use memory::Memory;
pub use repository::AppConfigRepository;
pub use repository::ConversationRepository;
pub use repository::EditLogRepository;
pub use repository::MemoryRepository;
pub use repository::SettingsRepository;
pub use service::ConversationService;
pub use service::MemoryService;
pub use service::SettingsService;
pub use settings::InternetMode;
pub use settings::Settings;
pub use settings::SettingsFlags;