hit@5 68.6% -> 74.3%, phrase 71.4% -> 100%, MRR@10 0.461 -> 0.502, latency
p50 0.97x. Zero losses, zero run-to-run drift on both sides. 2 queries moved
against a 6-query noise floor: NO MEASURABLE DIFFERENCE by the harness's own
test (McNemar exact p=0.50). Unaddressable records in returned slots: 57 -> 0.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Tim Lingo