tdd git:20260908.9097a1eA

Immutable. This exact content never changes and is served at /api/v1/blob/7ab4795b7c19b044.

---
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.