One seat left. Your app just accepted two tickets. Test that awkward case before calling the feature done.
This original staged example follows Matt Pocock’s TDD skill: one literal behavior check failed, a minimal correction made the same check pass, and three bounded checks now pass. Actual authoring and execution used Codex and local Node, not Claude Code. Get the public original fixture ZIP; full guide and Markdown unlock with your email for access, not newsletter consent.
Get the part you came for.
- Original last-seat fixture and accepted public behavior
- Exact failing check, minimal fix and three passing cases
- Supported Claude Code setup, source pin and honest limits