Completes the A2c acceptance scenario: click an author on a book
detail page -> land on the bookshelf filtered to everything that
author wrote (including their share of co-authored books).
- Media detail + unscoped list resolved maps expose subtitle,
explicit, authors, publishers (the library-scoped raw branch and
the search endpoint already did — raw rows follow the SELECT).
- SearchMediaItemsUnified SELECT carries the new columns; the search
endpoint serializes the row directly, so clients get them there too.
- book_detail.templ renders each author as a link to
/bookshelf?author_filter=<name>.
- Bookshelf honors filter params in the URL on load (author_filter,
series_filter, genre_filter, publisher_filter, tags_filter,
narrator_filter, language_filter): pre-fills the form, applies it to
the first grid load. Comma-joined values are multi-select via the
server-side string_to_array split. Filtered views are shareable.
Pins widened: search rows (+7 keys), resolved keys (+4); changelog
entries in docs/contract_pins.md. Android follow-up plan written to
~/.opencode/plan/bookhoard-app-v2-compat.md.