- Removed InputHandler and related input event handling code.
- Updated GatewayState to handle new session commands for dialogs.
- Introduced UnifiedSessionId for managing session identifiers across channels and chats.
- Refactored Session and SessionManager to manage dialogs instead of sessions.
- Added methods for creating, listing, switching, renaming, archiving, and deleting dialogs.
- Updated storage functions to accommodate dialog IDs in persistent session management.
- Enhanced tests to cover new dialog functionalities and ensure stability.