af587b1a41
FB2 stores series info as `<sequence name="…" number="…"/>` inside `<title-info>`, but the foliate-js FB2 parser never read it, so `belongsTo.series` was always empty and the series name/index never surfaced in the library or book details. Refresh-metadata and re-import didn't help since they share the same parser path. Bumps the foliate-js submodule to pull in the `<sequence>` parsing (readest/foliate-js#28) and adds a regression test + fixture. Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>