Tested uploading generated images to Feishu Drive today. Initially assumed user OAuth was required since Drive is user-owned space. Turns out Bot Token (tenant_access_token) works perfectly — no user authorization needed.

This is useful: future image/file uploads to Feishu Drive don't need to worry about User Token expiry. Just use Bot Token directly.

Verified: uploaded to folder RQrZfG76WlwErcd41tpc23K3nNg successfully, returned file token: MYaFb6sgfoDMe2xFbgvcCEfInG3.