- retry the login on a fresh browser context (stale cf_chl_rc_ni cookies loop
the next challenge) and fail loudly with cloudflare_login_post_challenge
- detect the Compass login-rejection message and second-factor prompts
- docs: record that Cloudflare's managed challenge blocks the headless login
POST (GET passes), what was tried, and the unblock options
Co-Authored-By: Paperclip <noreply@paperclip.ing>
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