Enrichment script: Open Library (books)

[DutchJaFO]

Context

Split from #19. Implements IEnrichmentProvider for Open Library, covering book quotes. Depends on the shared enrichment scaffold (#19); does not depend on TMDB (#35), Wikidata (#37), or TVDB (#46).

API details

Property	Value
Base URL	https://openlibrary.org
Auth	None required
Rate limit	No hard limit for modest use
Endpoints	/search.json?title=...&type=/type/work

What gets enriched

Field	How
author	Open Library author_name from the best-matching work
date	first_publish_year from the best-matching work

Implementation checklist

• Implement OpenLibraryEnrichmentProvider : IEnrichmentProvider in Quotinator.Enrichment
• SupportedTypes: book
• Search by source field title; apply enrichment only on a confident title match
• Map author_name[] (array) to the single author string — use the first entry; flag if multiple authors exist
• Only fill fields that are currently null or empty — never overwrite manually curated data
• Cache API responses in scripts/cache/openlibrary/
• Log skipped entries (no confident match) for manual follow-up
• Respects the shared --dry-run, --no-fetch, and --provider flags from the scaffold

Notes

• Depends on scaffold (Enrichment script: fill missing quote fields using TMDB, Open Library, and Wikidata #19) only
• Open Library search results can be noisy for common titles — use number_of_pages_median or edition_count as a confidence signal if needed
• genres for books are not reliably structured in Open Library; defer to manual curation or a future source