* feat: agent can select multiple knowledge bases
* feat: basic search multiple knowledge base
* fix bug: knowledge base is delete, assistants and agents sync delete
* fix bug: assistant and knowledge base button sync
* feat: allow to search multiple knowledge base
* chore: finish rebase to upstream/main
* feat: knowledge base support more file types
* chore: add common document types
* feat: finish basic odloader
* feat: finish open document loader
* feat: support more type from dictionary
* fix: 删除目录时仍能检索到信息
* chore
Chen Tao