ish-app/ish ? reverse-engineered prompt

Build me an iPhone app that lets someone open a real Linux style shell on iOS. I want it to feel like a simple terminal app where I can type commands, run a small Alpine Linux environment, install basic packages, and use common command line tools from my phone or iPad.

Under the hood it should emulate enough x86 Linux behavior to run user space programs, translate Linux system calls so they work on iOS, and keep the Linux filesystem separate and self contained. Include a way to build and run it in Xcode, plus a command line test version for development.

Please set up the project so it can be debugged with optional logging for system calls, instructions, and verbose emulator messages. Keep the app focused on the shell experience, not a fancy UI. Look up current Apple and build tool docs online if you need to.