kusti420/k4_un1ca ? reverse-engineered prompt

Build me a working build system for an unofficial UN1CA fork for the Galaxy A52s 5G, focused on the One UI 9 port. I want to be able to run it from a clean Linux environment, pull in the needed Samsung firmware pieces, apply the patches, and generate a flashable ZIP for the device. It should support the current A52s bring up status, boot to setup and home screen, and keep the existing features like OTA updates, blur options, Play Integrity fixes, app hiding, and the other custom Samsung tweaks the project already mentions.

Please make the setup straightforward, with clear scripts or commands for building, and include any missing docs or checks so someone can actually get a build out of it without guessing. If you need to, look up any current docs online for the Samsung and Android build tools.