Proof: targeted verifier salt cache and executor/dashboard tests pass; npm test passes 244/244; operator dashboard bundle builds; git diff --check passes.
Assumptions: a 500 ms verifier salt freshness bound with 250 ms background prefetch is conservative for quote-response signing, and stale or malformed salt must block signing instead of using cached data.
Still fake: venue-native terminal fill ids and fee-complete realized PnL remain unavailable.
