# Docs

- [`project-overview.md`](./project-overview.md) — goal, scope, constraints, the datasets, history
- [`system-architecture.md`](./system-architecture.md) — data flow, canonical schema, routing, how one frontend serves both exam years
- [`data-pipeline.md`](./data-pipeline.md) — Excel parse quirks, per-dataset formats, overflow-sheet gotcha, expected row counts, verifying a rebuild
- [`deployment-guide.md`](./deployment-guide.md) — GitHub Pages workflow, adding a dataset, rollback, troubleshooting