### 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?

feat: handle operator drag
feat: add FlowCanvas
#592

### Type of change

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

### What problem does this PR solve?

fix: cannot save the system model setting #468
feat: rename file in FileManager
feat: add FileManager
feat: override useSelector type

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

some chunk method pictures are not in English #437

feat: set the height of both html and body to 100%
feat: add SharedChat
feat: add shared hooks

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

* feat: replace logo

* feat: set height of MoreIcon to 24px

* feat: add UserSetting

* feat: add a run button to the document

* feat: add knowledge configuration page

* feat: remove KnowledgeSearching

* feat: add KnowledgeTesting

* feat: add SelectFiles

* feat: modify routing to nested mode

* feat: rename document

* feat: Modify the color of the svg icon in the header according to the selected state

* feat: add translation icon to header

* feat: shorten the route length of the knowledge base

* feat: extract routing information from the knowledge base into constants