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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>