Studio's KSampler mode passes the chosen name straight to comfy.samplers.
sampler_object(), so any sampler this ComfyUI has always worked — but both
frontends offered a hardcoded list of eight written before the rest existed.
That silently hid 36 of them, including res_multistep, which is what ComfyUI's
own MiniMax H3 templates use.
Both now read sampler_name from the live KSampler node spec and fall back to the
old list if that fetch fails. A saved name missing from the live list stays
selectable instead of being swapped for the first option.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>