[Question]: It is recommended to make the necessary parameters of the default agent editable

## Question or topic

As stated in the title

## Context

It is recommended to allow editing of the essential parameters of the default agent.
For example, recently added settings such as email and model routing.
At present, the default agent cannot be edited in the frontend at all unless the source code is modified or files are edited directly.
Even if editing can be achieved by modifying configuration files, there is no way to view the changes visually.
This may prevent some individual users who have not created new agents from being able to use certain new features

## Tried so far

None