# 004: Briefs vs manifest drift check

Goal: fleet briefs match the agents manifest.

Steps:
1. Read `fleet/agents.json` and both files in `fleet/briefs/`.
2. Report any drift: agents in the manifest without a brief, or
   briefs for agents no longer in the manifest.
3. Do not edit the manifest; if drift is found, just document it
   precisely (agent name + which side is missing).

Done criteria: this file states either "no drift" or lists each
drift item with the agent name and missing side.

Result notes (append below before moving to done/):

- 2026-10-07, builder muse--runtime--roles: no drift. Manifest declares
  2 agents (muse--runtime--operator → briefs/operator.md,
  muse--runtime--roles → briefs/roles.md); both files exist in
  fleet/briefs/ and no extra briefs are present. No manifest edit made.