BookInfo, LibraryTypeMap, and MediaBadgeKind move verbatim out of
collections.go into handlers/cards.go (the card package surface, same
package: no import-graph or templ changes), joined by the H2 builder:
- buildBookCard (unexported): the ONLY place BookInfo is constructed,
fed by cardSource; cover URL via ResolveMediaURL, badge via
MediaBadgeKind — both inside the builder, not per call site.
- Four exported adapters normalize the four real feed shapes:
database.MediaItems (sections/smart/series/tags/preview),
GetCollectionItemsForDashboardRow (collection dashboard branch),
GetCollectionItemsRow (collection-items joins — MediaItemID field),
SearchMediaItemsUnifiedRow (badge rides its LibraryTypeName column,
so no LibraryTypeMap query at all).
- Adapters return non-nil empty slices, which retires the per-site
[]BookInfo{} empty-seed assignments when call sites migrate.
No call site changes in this commit — the 20 literals and 5 seeds are
migrated one surface per commit next, each with the H0 pin suite.
Verified: build, vet (only the two pre-existing flagged saveCoverImage
warnings), and 14/14 contract pins — the key freeze is byte-identical.
John O'Keefe
1ce1b79489