PR Checklist

If you have any questions, you can refer to the Contributing Guide

What is the current behavior?

Currently, the Copilot component handles both UI interactions and session management responsibilities, violating the single responsibility principle. This makes the codebase harder to maintain, test, and extend as the functionality grows.

Issue Number

What is the new behavior?

Refactored the codebase to separate concerns by:

1. Creating a dedicated SessionManager class that handles all session-related logic including:

   • Session state management
   • System prompt loading
   • Session lifecycle operations

2. Modified the Copilot component to use the new SessionManager, focusing it solely on UI interactions and user experience.

3. Properly defined interfaces and types to ensure type safety throughout the application.

Does this PR introduce a breaking change?

• Yes
• No

Specific Instructions

The refactoring improves the code structure but maintains the same functionality. When testing, please verify that all existing Copilot features continue to work correctly.

Other information

This refactoring brings several benefits:

• Separation of Concerns: Clear distinction between UI handling and session management
• Improved Testability: SessionManager can be tested independently of Vue components
• Better Maintainability: Centralized session logic makes future changes easier
• Enhanced Extensibility: Facilitates future features like session persistence or multi-session support
• Stronger Type Safety: Well-defined interfaces for session state and operations