…k handling

…ve error handling and UI feedback for failed messages

… live chat messages

…at integration

…d from Task to void; remove unused conversation manager field in CopilotStudioAgent

…sation handling; update ChatController and LiveChatService for new conversation flow; enhance frontend to display conversation ID and manage chat state.

…versationManager to support new mapping methods; modify CopilotStudioAgent and MsTeamsProactiveMessage to use ConversationMapping for proactive messaging.

…onfiguration; streamline API endpoints section and remove outdated features.

…low for Handover To Live Agent Sample

…sources.

…lication ID.

…rity

…ion and setup instructions

…AgentUsingSkill

- Reorganize sample under IntegrateWithEngagementHub directory
- Rename folder to HandoverToLiveAgentUsingSkill for clarity
- Update README with improved documentation:
  - Add comprehensive Prerequisites section
  - Clarify skill vs action terminology in mermaid diagram
  - Add detailed explanation of dual app registration requirement
  - Move architecture diagram to 'How It Works' section
  - Add security warnings for appsettings.json
  - Add 'Verify Your Setup' section with testing steps
  - Add comprehensive Troubleshooting section
  - Add Cleanup instructions
  - Replace 'Production Considerations' with 'Future Enhancements'
  - Fix terminology consistency (agent vs bot, skill vs action)
  - Use auto-incrementing numbered lists for easier maintenance