### What problem does this PR solve?

feat: Support for conversational streaming
#709

### 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)

* feat: add message popover content

* feat: add file icon