This is a PROOF plan: a markdown file with a small frontmatter block (id, status, track, depends, touches, owner) followed by prose and a checklist. Files are the source of truth — the board (proof serve) only ever renders what's already here, and the AI updates a plan's status the moment the work's state changes, the same way it edits any other file it's already touching.

• [ ] read plans/README.md for the full schema and the one rule
• [ ] replace this file with your project's first real plan