The README section was gated on `readme: true` in the catalog YAML and no entry set it, so all 222 plugin pages shipped without one. READMEs now render for every GitHub/GitLab entry (fetched at the reviewed sha, subdir first then repo root, common casings and docs/README.md as fallbacks); `readme: false` opts an entry out. Build proof: 222/222 READMEs rendered.