composition-base git:20260712.d0bf6eeA

Immutable. This exact content never changes and is served at /api/v1/blob/8b4b2269e61b6388.

---
name: composition-base
description: Use when a task asks for the declared composition marker or exercises the synthetic adapter fixture.
---

# Composition Base

For a declared composition marker, set `base_marker` to `BASE-STACK-V1`.

For the synthetic adapter fixture, preserve verified work and report evidence honestly.