@data oscillated 15-20/21 because the persistent test wallet accumulated data
across scenarios, growing the read fan-out. Add a cheap per-scenario reset
(resetDataState): a single SPARQL DELETE on the shim anchor graph clears the
account records, so allAccounts() collapses and the fan-out is bounded to what
the current scenario re-provisions (accounts recreated lazily). O(1) on one
graph — not a fan-out delete (which saturated the browser before). Called in the
@data Before hook, time-boxed so it can't starve the broker login budget.
Test-infra only — product model, boundary and app read path untouched.
Note: not yet re-measured to stable-green — the broker was degraded during the
bounded validation window (DNS/timeout flakiness). To re-measure when the broker
is stable. knowledge_data-layer-broker updated.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Sylvain Duchesne
eafb4403b9