# Entity Contract — Trading Literature

Each generated entity must be a Markdown artifact with:

- one top-level heading containing the entity title
- a `## Category` line containing exactly one of: `trader`, `market`,
  `strategy`, `error`, `psychological_pattern`, `institution`,
  `instrument`, `evidence_bearing_claim`
- a `## Definition` section
- optional `## Context`, `## Source Evidence`, and `## Review Notes`
  sections

Entity titles should be stable, short, and reusable across chapters of
the same source. Do not include the chapter number in the title; that
provenance belongs in the source artifact, not the entity.