Folio stores normalized/enriched dataset JSONL as portable SQLite files. It is the database and browsing layer for data that has already been normalized by dataset/import tooling.
Required: survos/field-bundle, survos/data-contracts.
Suggested for ingest/write workflows: survos/jsonl-bundle, survos/import-bundle.
See docs/configuration.md for the required multi-connection Doctrine setup.