### 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?
#666
feat: support DeepSeek
feat: preview word and excel
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
fix: #567 use modal to upload files in the knowledge base
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
feat: upload file in FileManager #345
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
support xorbitsai inference as model provider
Issue link:#299
### 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: add loading to all pages
* fix: disable sending messages if both application and conversation are empty
* feat: add chatSpin class to Spin of chat
* feat: generate select options for SystemModelSettingModal grouped by type
* feat: add llm icon
* feat: add upgrade button to UserSettingTeam
* feat: replace the icon in the sidebar of the user settings page
