Four ComfyUI custom-node classes exposing real diffusion-sampling perturbations: sigma-schedule jitter, attention-map value dropout, ancestral extra-noise multiplier, latent-frame interleaving. Twenty parameter presets and a five-image gallery rendered against ComfyUI Desktop 0.22.2 + SD 1.5 base. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>