From archived forum posts and download descriptions (translated from Russian/Ukrainian), the mod allegedly adds:
The primary mechanic involves using a "piston" (which represents the player's interaction point) to trigger animations with different characters. Skacat- Lovely Craft Piston Trap -18 - 0.1 Mod ...
Mira, who collected broken curiosities and repaired them for coin, held it up to the light. It thrummed faintly, like a contented beetle. The numbers didn't make sense—-18 and 0.1—except as temperatures and weights in some stranger's calculus. She imagined a tinkerer in the hills soldering and sighing over the thing, calling it “lovely” to keep from calling it dangerous. Skacat- Lovely Craft Piston Trap -18 - 0.1 Mod ...