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At every save_every steps, run a quick 8-step no-CFG inference pass on a random training clip and save the decoded waveform as sample_stepXXXXX.wav next to the checkpoint. Uses the existing generator.unnormalize + feature_utils.decode + vocode pipeline from the sampler. Failure is non-fatal (logged and skipped). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>