feat: hide filters button and hide testing history (#149)

fix: disable sending messages if both application and conversation are empty and add loading to all pages (#134)

feat: add DocumentPreviewer for chunk of chat reference and remove duplicate \n from record.progress_msg (#97)

feat: set width of chunk text to 100% and add Skeleton to Preview of document and remove react-pdf (#94)

feat: create a chat assistant and extract SimilaritySlider (#67)

feat: confirm before deleting knowledge base and add ChunkToolBar (#56)

feat: modify routing to nested mode and rename document (#52)

feat: Modify the color of the svg icon in the header according to the selected state and feat: extract routing information from the knowledge base into constants (#51)

feat: layout the knowledge list page and modify the page switching button in the header (#48)

feat: remove loading from model and use DvaModel instead of redundant types such as kAModelType (#47)

feat: prevent the user from entering the knowledge base if he is not logged in (#45)

update knowledge_kb (#34)

add front end code (#27)