THE PROOF:
10,000,000 × 768d vectors
30 GB Lance dataset on disk
IVF_PQ index: 173 seconds to build (3162 partitions, 192 sub_vectors)
Search p50: 5ms — at TEN MILLION vectors
Search p95: 19ms
HNSW at 10M would need 29 GB RAM = past the ceiling
Lance at 10M = 30 GB disk, 5ms search, no RAM constraint
Agent test on 500K workers: 22/22 positions filled (100%)
Forklift Operator x5, Machine Operator x4, Welder x3,
Loader x8, Quality Tech x2 — all via hybrid SQL+vector
The architecture holds past the HNSW ceiling. Lance takes over
exactly as ADR-019 designed. This is not theoretical anymore.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
