feat(tui): add usage overlay and sidebar for displaying usage statistics and tasks

feat(tui): implement status bar with connection and turn state indicators
feat(tui): create workflow panel for agent status and progress visualization
feat(web): introduce web frontend interface with static file serving
feat(ws): add WebSocket interface for real-time communication and session management

apps/application/src/ports/mod.rs

@@ -0,0 +1,22 @@
+//! Port traits — interfaces for external / infrastructure services.
+//!
+//! These traits define the boundaries between the application layer and
+//! the outside world. Infrastructure adapters implement these traits;
+//! the application layer depends only on the trait definitions.
+//!
+//! # Ports
+//!
+//! - [`provider`] — `ProviderService`: LLM chat completion (streaming + non-streaming)
+//! - [`password`] — `PasswordService`: password hashing and verification
+//! - [`token`] — `TokenService`: JWT access/refresh token generation and verification
+//! - [`authentication`] — `AuthService`: combined authentication operations
+
+pub mod authentication;
+pub mod password;
+pub mod provider;
+pub mod token;
+
+pub use authentication::AuthService;
+pub use password::PasswordService;
+pub use provider::ProviderService;
+pub use token::TokenService;