nx_sovereign_runner.nx

nx_sovereign_runner.nx -- read an ELF off disk via OUR fs primitive, load it into OUR simulator, step every instruction in NishiLang. Demonstrates the full sovereign chain operating on a real file: sys_read_file (NishiLang) read ELF bytes from disk nx_loader_load (NishiLang) parse + place segments nx_rv64_cpu_new (NishiLang) initialize CPU nx_rv64_run (NishiLang) step every instruction Hardcoded path "/tmp/nx_sov_inner.elf" — caller stages the file there before invoking. Once nx_argv is hooked up to main(), the path becomes argv[1]. Exits with: 0 = ran successfully, propagates inner.exit_code via sys_exit (so smoke script sees the inner program's exit code directly) 1 = file read failed 2 = loader rejected 3 = simulator step error 4 = simulator did not halt