At this level
com.hectorsector.book · 2- com.hectorsector.book.book record A book in a user's library. An anchor record referenced by status and other book-related events. Metadata (title, authors, cover, etc.) is resolved at display time from the identifier — it is not stored in the record. At least one of olWorkId, isbn13, or isbn10 must be present; apps should prefer olWorkId when available for work-level deduplication across editions.
- com.hectorsector.book.status record A reading status change event for a book. Records are append-only and timestamped — each status transition creates a new record rather than mutating an existing one. The current status of a book is derived by taking the most recent status record (by createdAt) referencing that book.