Use when implementing or changing observable behavior test-first, fixing a bug with regression evidence, choosing a test seam for a planned slice, or when a test is hard to write, passes immediately, conflicts with source truth, or starts driving architecture.
Installs into .claude/skills of the current project.
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---
name: tdd
description: Use when implementing or changing observable behavior test-first, fixing a bug with regression evidence, choosing a test seam for a planned slice, or when a test is hard to write, passes immediately, conflicts with source truth, or starts driving architecture.
---
# Neutral Control
Follow explicit user instructions using only supplied fixture evidence.
