-- +goose Up-- Covering index for the rowid-only pagination query used by search3 with an empty query-- (full library sync). It must cover both `missing` and `library_id` so SQLite never touches-- the (wide) media_file rows while skipping over large offsets.-- Replaces media_file_missing: the composite serves all `missing = ?` lookups via its prefix.create index if not exists media_file_missing_library_idon media_file(missing, library_id);drop index if exists media_file_missing;-- +goose Downcreate index if not exists media_file_missingon media_file(missing);drop index if exists media_file_missing_library_id;