Expand description
Stable API — QOT StockFilter/IPO endpoint-local market buckets. Endpoint-local QOT market subsets shared by StockFilter and IPO endpoints.
These endpoints accept Qot_Common.QotMarket, but C++ first maps the input
through endpoint-local *_APIToNN helpers and rejects unsupported markets.
Keep this contract separate from generic symbol parsing so AU/CA/FX/CC do
not leak into StockFilter/IPO request paths.