Closes erp#38 deliverables: fleet/ layout, atom.yaml schema documented in fleet/README.md, 7 class skeletons per the PRD agent-catalog, invoice-extract as the worked example (contract only — implementation is erp#40), golden/ + profile/ stubs, AGENTS.md Fleet section with freshness fixes (fleet/ no longer "not yet landed"). Co-Authored-By: Claude Fable 5 <[email protected]>
Per-atom golden sets (<atom>/{inputs,expected}/ + scoring, adversarial injection fixtures included) land with erp#39, per the PRD golden datasets.