- Document user-specific API endpoints: /api/user/models, /api/user/providers,
  /api/user/rotations, /api/user/autoselects, /api/user/chat/completions
- Document user MCP tools: list_user_models, list_user_providers, set_user_provider,
  delete_user_provider, list_user_rotations, set_user_rotation, delete_user_rotation,
  list_user_autoselects, set_user_autoselect, delete_user_autoselect, user_chat_completion
- Update user dashboard with clear endpoint documentation
- Add enhanced analytics for user token usage tracking
- Add database improvements for user token management