### What problem does this PR solve?
feat: API access key management #2846
feat: Render markdown file with remark-loader #2846
### Type of change
- [ ] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [ ] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):
### 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?
fix: fix uploaded file time error #680
feat: support preview of word and excel #684
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### 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?
Support Traditional Chinese
Issue link: #335
### Type of change
- [x] New Feature (non-breaking change which adds functionality)