tests/smoke/run_unified.sh exercises the common interface against a live
server + real upstreams (Deribit/Hyperliquid public endpoints):
get_instruments (single + fan-out, asserting fees/history_start),
get_historical for both venues, and a 422 for an unsupported exchange.
Refresh tests/smoke/README.md (drop stale Bybit/Alpaca references).
Verified green end-to-end.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Adriano