Refactor tool message formatting and enhance error handling in all_tools.py; update nest_asyncio dependency in pyproject.toml (#5408)

update PYDANTIC_V2 definition in utils

Merge pull request #5399 from glide-the/mcp_kit

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del frontend

Refactor chat completions handling to conditionally build tool configuration based on the presence of tools in the request body. This change enhances the robustness of the chat function by preventing potential errors when no tools are provided.

Refactor chat handling to streamline message ID retrieval and enhance MCP connection support. Update chat function to include use_mcp parameter, allowing for dynamic MCP connection management. Adjust web UI to incorporate MCP usage toggle, improving user experience and flexibility in agent interactions.

Refactor MCP connection management by removing the command field from schemas and API requests, consolidating it within the config dictionary. Update related functions and the web UI to enhance clarity and maintainability, while improving session state handling for timeout and working directory settings.

Refactor MCP connection management by removing the command field from schemas, API routes, and database models. Update related functions to store command within the config dictionary, enhancing configuration clarity. Adjust web UI to reflect these changes, improving user experience and maintainability.

Remove auto_connect field from MCP connection schemas, API routes, and database models to streamline connection management. Update related functions and UI components to reflect this change, enhancing clarity and maintainability.

Refactor MCP connection update API to return consistent status responses instead of HTTP exceptions. Update related database retrieval logic and enhance web UI with toggle functionality for enabling/disabling connections, improving user experience and error handling.

Update MCP connection schemas to remove minimum length validation for command fields, enhancing flexibility in request body. Refactor connection retrieval function for consistency in naming conventions.

Refactor connection form submission process in MCP management page by replacing `st.experimental_rerun()` with `st.rerun()` for improved session state handling and consistency in UI behavior.

Remove unused MCP connection retrieval function and clean up related API routes for improved clarity and maintainability.

Refactor MCP connection schema and API to remove server_type and name fields, replacing them with server_name and transport. Update related CRUD operations and logging for consistency. Enhance database model to support additional connection configurations and improve web UI for better user experience.