Every action here is a git commit to the machine repo: cancel adds the contact to the suppression list (the sender checks it before every send), sequence edits rewrite outbound/queue.json, new prospects append to it. The daily executor picks changes up on its next run. No GitHub visit needed.
Add prospect
A 3-step sequence is drafted from the segment template. Review and edit before saving; nothing sends until its turn in the queue (and only in LIVE mode).