Cross-references TICKER prints against BROKER queue depth. When a large trade occurs without a corresponding queue reduction at that price, flags it as potential off-book execution.
SDK APIs used: TickerHandlerBase, BrokerHandlerBase, subscribe(TICKER, BROKER)
Risk: None — read-only. Requires LV1 data permission for BROKER feed (gracefully degrades without it).
python3 examples/59_dark_pool_detector/main.py