nx_sov_build_run.nx

nx_sov_build_run.nx -- FULLY SOVEREIGN, REUSABLE build runner (operator: "no sh and no c build, from the hardware layer up"). Generalizes nx_retire_gcc_orchestrator from hardcoded targets to ANY module passed as argv[1]. The build path is bits-up sovereign end to end: nx_cc_sovereign.elf <module>.nx -> _build/<module>.s (the team's SELF-HOSTED compiler) nxasm_x86_main.elf <module>.s -> _build/<module>.sov.elf (the team's x86-64 assembler+linker) _build/<module>.sov.elf (run it; exit = its exit) ⚠OUTPUT PATH IS _build/, RELATIVE TO CWD -- NOT /tmp/. These three lines said /tmp/ until 2026-07-30, left stale by the flock change that moved artifacts to a per-target _build/<name>.lock+.s+.sov.elf so concurrent sweeps stop overwriting each other mid-build. A doc that disagrees with the code is a defect, not a nit: it is why callers hunt for the artifact, and it hid a REAL brick hazard -- nx_hostctl cmd_buildrun (nx_hostctl.nx) ONCE read only /tmp/<name>.sov.elf, which made this runner and that supervisor a MATCHED PAIR that had to ship together or every /api/build failed. CLOSED -- VERIFIED 2026-08-17 BY READING THE LIVE SOURCE, not by assuming: cmd_buildrun now probes the ABSOLUTE .../nishihost/buildroot/_build/<name>.sov.elf FIRST (the parent is not in the child's CWD, so it must name it absolutely), falls back to /tmp/ for pre-flock builders, and its failure line NAMES BOTH paths. The pairing constraint no longer holds and this runner ships alone. The old line also cited :3089 while the code now sits near :3571 -- a stale line number is the tell. * A STALE HAZARD NOTE IS ITSELF A HAZARD: it makes the next reader either avoid a safe change or hunt a defect that was already fixed. This estate has the receipt -- a standing RED-gate list that nobody re-measured cost NINE sessions the SAME nine investigations, and 5 of the 9 were already green. Re-measure a warning before repeating it. NO gcc, NO bash, NO .sh anywhere. Orchestration is NishiLang sys_fork/dup3/execve/wait4. Recompile-retry guards the known-good compiler's empty-.s nondeterminism. Usage: nx_sov_build_run.elf <module-basename-in-runtime/_hdl_build>