### What problem does this PR solve?

#643 feat: display the version and backend service status on the page

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

feat: delete the added model #503
feat: display an error message when the requested file fails to parse
#684

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

add support for ollama

Issue link:#221

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

* feat: logout

* feat: fixed the issue that some PDF documents could not be displayed on the chunk list page in small screens

* feat: use DvaModel instead of redundant types such as kAModelType

* feat: set the type for registerServer

* feat: remove loading from model