Updates SearchMediaItemsUnified query to support searching across all
libraries when library_id parameter is not provided. Changes SQL from
requiring library_id to checking for NULL:
AND (sqlc.narg('library_id')::uuid IS NULL
OR mi.library_id = sqlc.narg('library_id')::uuid)
The explicit ::uuid cast ensures PostgreSQL handles type inference
correctly when comparing UUID columns with nullable parameters.
Regenerates Go database code including queries.sql.go and querier.go
to reflect the updated SQL schema.
This enables the /api/media-items/search endpoint to search all libraries
by omitting the library_id query parameter, matching the behavior of
the OPDS search endpoint.
john-okeefe
fe8a65af84