---
type: trekbrief
brief_version: "1.0"
task: Demo task for annotation round-trip fixture
slug: annotation-brief-demo
research_topics: 0
research_status: complete
---

# Demo brief for annotation round-trip

This fixture is used by `tests/integration/annotation-roundtrip.test.mjs`
to verify SC2 (byte-identical empty-anchor round-trip) and SC7 (per-target
isolation against `validateBrief`).

It carries no anchors. The round-trip test runs:
`stripAnchors(addAnchors(body, [])) === body`.

## Intent

Provide a minimal brief that validates against `brief-validator.mjs` so
the round-trip integration test has a real artifact to revise.

## Goal

The brief should validate cleanly (no errors, no warnings) and contain
enough body text that adding an anchor and stripping it back is a
non-trivial operation.

## Success Criteria

- File parses via `parseDocument`.
- `validateBrief` returns `valid: true`.
- `stripAnchors(addAnchors(body, []))` is byte-identical to body.