Builds a 15200-node fixture (50×100 wall grid + 8000 hosted doors +
200 sparsely-indexed slabs) and runs `cascadeDirty` 1000 times with
warm-up. Reports p50/p95/p99/mean/max in ms.
Runs via `bun run bench:registry` from the core package.
Today: p95 measured at ~0.002ms — three orders of magnitude under the
Phase 1 gate of 2ms. Headroom is substantial; we'll only revisit this
if Phase 3 wall introduces `linkedBy: 'endpoint-match'` and pushes the
inner cascade past the gate.
Not wired into CI for v1 — regressions reviewed manually before phase
gates. Output is JSON so a future CI step can diff against a baseline.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
