- Escape LIKE wildcards (% and _) in search queries using fragment ESCAPE
to prevent accidental pattern expansion and potential DoS vectors
- Use Repo.aggregate for occurrence_count instead of loading all
occurrences into memory in get_error/1
- Use Repo.aggregate(:min, :inserted_at) for first_occurrence_at instead
of fragile List.last/1 that depends on query ordering
- Add MusicLibrary.ErrorsTest with 15 tests covering list_errors/1
(default, status/muted/search filters, wildcard escaping, pagination,
empty results) and get_error/1 (with/without occurrences, not_found)
Claudio Ortolina