We implement a hierarchical fallback inclassify_signal() that attempts the parent deep pathand, on exception, drops to a fast frequency-based classifier.On synthetic RF IQ, we inject realistic failure modes (loaderror, shape mismatch, NaN input, timeout, class mismatch) atprobability pfail and report rescue rate and accuracy impacts.The rescue adds < 1 ms median latency and corrects a … Continue reading Fallback Paths: Hierarchical → Frequency-Based Rescue for RF Modulation Inference