https://cofriend.ai/ https://cofriend.ai/404 https://cofriend.ai/auth-success https://cofriend.ai/auth-success/continue https://cofriend.ai/docs/cofriend-data-deletion-instruction https://cofriend.ai/docs/terms-of-service-cn https://cofriend.ai/docs/privacy-policy-cn https://cofriend.ai/docs/privacy-policy https://cofriend.ai/docs/terms-of-service