A gRPC-based service that provides a modern RPC interface to Interactive Brokers TWS/Gateway API. Historical data: Max 50 requests per 10-minute sliding window, plus a 15-second gap between identical ...

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Retraining policy for forward test: one-shot only (no retraining inside the 20% window). Freeze model, hyperparameters, and thresholds before touching the 20% block. Run a single final evaluation on ...