Adds publisher_filter to SearchMediaItems/SearchMediaItemsUnified
(fuzzy word_similarity against mi.publisher, mirroring genre_filter),
plumbs it through services.SearchParams and the search handler, and
extends the GREATEST relevance ranking to include publisher matches.
Serves the app's author/publisher/genre/tag click-through browses
(UX pass item 5 — publisher was the only facet without a server
filter).
John O'Keefe
3d88f0b960