Daily cycle

Runs the full daily rotation: for each live project, picks the least-recently-used angle, drafts a post, validates through antislop, and publishes to the first available channel.

marketing cycle --dry-run    # preview what would be posted
marketing cycle              # draft and post for real

Recommend --dry-run first unless the user explicitly says to post.

This is the same command that runs on the GitHub Actions daily cron (weekdays 14:00 UTC).