What does this mod do?

It removes the spoilage ingredient from the Efficiency module 3 recipe.

Does it change anything else?

No. It only removes spoilage from efficiency-module-3.

Is it safe for existing saves?

Yes. It is a prototype-stage recipe tweak with no runtime scripts or migrations.

What happens if another mod changes the same recipe?

This mod runs in data-final-fixes.lua and removes spoilage from the final recipe ingredient list at that stage.