Theme switch support (#3568)

Unified API response json schema (#3170)

fix: Fixed the issue of error reporting when uploading files in the chat box #2897 (#2898)

fix: Fixed an issue where the first message would be displayed when sending the second message #2625 (#2626)

feat: Create a conversation before uploading files in it #1880 (#2057)

feat: Hide the upload button in the external agent's chat box #1880 (#1984)

feat: Delete the files uploaded in the external dialog box #1880 (#1967)

feat: Add MessageInput to the external chat page #1880 (#1963)

feat: Add FileIcon #1880 (#1960)

feat: Delete the file from the upload control of the message input box #1880 (#1946)

feat: Supports chatting with files/images #1880 (#1943)