edisnord/relapse-y2jb ? reverse-engineered prompt

Build me a simple JavaScript payload for PS5 Y2JB that runs the Relapse exploit from the YouTube app instead of the browser.

I want it to send the payload, trigger the kernel exploit, show clear progress while it runs, and then leave the app in a clean state so I can close it normally afterward. It should also expose the usual loader port for ELF payloads once the jailbreak is done.

Please keep it set up so the generated relapse.js can be built from source, and make sure it matches the notes in the README about the supported firmware range and the Y2JB flow. If you need current details from the upstream docs or release notes, look them up online.