# Docs

- [`system-architecture.md`](./system-architecture.md) — data flow, schema, 3-variant deploy, score-tier model, admission-block catalog
- [`data-pipeline.md`](./data-pipeline.md) — Excel parse quirks, overflow-sheet gotcha, audit scripts, refresh flow
- [`deployment-guide.md`](./deployment-guide.md) — GitHub Pages workflow, adding a new variant, rollback