- Rewrite uploader/baijiahao_uploader/main.py: unify on BaseVideoUploader, add QR-code cookie login (headless), robust publish-page flow with title/desc/tags, thumbnail and collection support - sau_cli: add 'baijiahao login/check/upload-video' subcommands - examples: get_baijiahao_cookie_headless.py for headless QR login