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Summary
This PR splits sampler guidance composition out of the sampling loop.
StableDiffusion::sample()previously mixed numerical sampling with CFG/image-CFG/SLG composition. This makesguidance behavior harder to extend and review.
The new structure keeps sampler methods focused on stepping latents, while guidance objects own prediction
composition.
Related Issue / Discussion
N/A
Additional Information
Regression smoke tests were also run locally for normal CFG, CFG++ samplers, and SLG paths.
Checklist