nx_gate_run.nx

nx_gate_run.nx -- SOVEREIGN gate runner: build an organ through the sovereign lane, run it, and check its output/exit -- with NO shell and NO .sh wrapper. Retires the simple bench/gate_*.sh pattern (which does compile-via-nx_compile_x86_native + as + ld + run + grep, all under a /bin/bash script) by composing a single fork+exec of _offc/nx_sov_build_run.elf <organ> (itself the sovereign compile+assemble+run) plus a substring check on the captured output. This is the enabling primitive for migrating nx_engineer's gates off /bin/bash (the agent-sovereignty debt: nx_engineer.nx runs its 7 gate scripts via a shell; nx_conductor_live already went sovereign). Run from the nxc2 root so the relative organ paths + the installed runner resolve. Usage: nx_gate_run <organ> [expect-substring] PASS (exit 0) iff the build+run did not crash AND (an expect string was given AND the captured output contains it) OR (no expect string AND the run exited 0). FAIL (exit 1) otherwise. Sovereign (syscalls only). license_tier: ORIGINAL expect_exit: 0