xmarre/ComfyUI-Spectrum-MiniMax-H3 ? reverse-engineered prompt

Build me a ComfyUI custom node that speeds up MiniMax H3 audio video generation by skipping some of the expensive transformer work when it can safely predict the next hidden features.

I want it to plug into a normal ComfyUI workflow, take the model in and return a model back, and only work with the native MiniMax H3 path. It should keep the actual output heads, audio and video reconstruction, and sampler behavior intact, but use a forecasting shortcut for selected steps so runs are faster. Please include sensible defaults, a way to turn it on or off, and a few tuning options for how aggressive the shortcut is. If the model or sampler is not supported, it should clearly fall back to the native path instead of breaking.

Also make it easy to see what it is doing with a simple debug mode, and keep any extra storage lightweight, using system memory by default. Look up the current ComfyUI docs online if you need to, and make sure it fits cleanly into the node system.