### 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: 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