axiom-S25u/EchoClip — reverse-engineered prompt

Build me a Geometry Dash background recording mod called EchoClip. It should record gameplay quietly in the background without making the game lag, using the GPU where possible and saving video straight to disk so it doesn’t eat RAM.

The main goal is simple, I want to play normally and press F6 when something cool happens, then it saves the last few attempts as a clip I can send on Discord. It should support basic recording quality like 720p 30fps, with room for higher settings if the computer can handle it. Add an automatic performance mode that lowers recording settings when the PC is struggling.

Please make it feel like a lightweight Geode style mod for Geometry Dash, with a clean setup, sensible defaults, and no need to run OBS for every attempt. Include any needed metadata, resources, and build setup so it can be compiled and installed normally. Look up current docs online if you need to.