Update AutoGen Studio, integrate new ChatBox

[bonk1t]

• Introduce a new chatbot interface.
  • Refactor the backend WebSocket handler.
  • Support reconnections and error handling.
• Implement LRU caching for Agency initialization.
• Remove HTTPException from the service layer for 404 errors only.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 98.13084% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 97.75%. Comparing base (04961e6) to head (99a636d).

Files	Patch %	Lines
backend/dependencies/dependencies.py	75.00%	1 Missing :warning:
backend/services/adapters/session_adapter.py	50.00%	1 Missing :warning:
backend/services/agency_manager.py	95.45%	1 Missing :warning:
backend/services/agent_manager.py	75.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #96 +/- ## ========================================== + Coverage 97.04% 97.75% +0.70% ========================================== Files 64 65 +1 Lines 1792 1868 +76 ========================================== + Hits 1739 1826 +87 + Misses 53 42 -11 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.