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New dataset pipeline nodes: - SelvaDatasetSpectralMatcher: batch spectral EQ toward VAE distribution - SelvaDatasetHfSmoother: batch HF attenuation for codec compatibility - SelvaDatasetAugmenter: gain/pitch/time-stretch variants with npz origin tracking Improvements: - Inspector: silence detection (max_silence_fraction param) - Saver: origin_name lookup for augmented clips' npz pairing - LoRA trainer: latent_mixup_alpha + latent_noise_sigma regularization - LoRA trainer: one-time SR mismatch warning in _load_audio Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>