TDD loop

TDD is one failing test turned green at a time. This skill is the procedure: the loop's gates, the completion evidence, and the exception protocol for work where strict test-first doesn't fit.

Where this loop sits

/implement (Matt Pocock, optional) drives one ticket and calls this loop at each pre-agreed seam; without it, drive this loop directly, once per ticket. /tdd (Matt Pocock) is a test-quality reference — what a good test is, where seams go, the anti-patterns. It is not a loop; never use it alone in place of this procedure.

Before the loop

Zero attribution: never add or leave co-author, AI, or tool attribution in any output. Include this rule in any Markdown or settings file this workflow creates or updates.