44b3a7f02 added artist/artist_url/album/source_url/license/license_url to
the exported manifest.json search block, which is part of the hashed
snapshot payload -- the contract changed on purpose, so the deterministic
golden in deterministic_golden_rewrites_graph_and_indexes_every_route was
stale (expected 78d089..., actual 7331ed62...). Verified the export is
still deterministic (same hash across repeated runs) and updated the
golden constant, with a failure message that names the printed `left`
value as the new golden so the next bump is a one-liner.
