nx_xport_gate.nx

nx_xport_gate.nx -- GATE for DC12: one authored asset into four consumers, measured by one ruler. The claim under test is not "the exporters run". It is that the geometry a consumer RECEIVES is the geometry that was authored, within a bound that was derived rather than chosen. So every number below comes back OUT OF AN ARTIFACT ON DISK, and the ruler is nx_mmdev's md_measure -- the estate's one millimetre deviation ruler, already proven to read a known 5.0 mm lift as 5.0 mm. Three things make this more than a green light: - a POSITIVE CONTROL: the source measured against ITSELF must read exactly zero on every axis, so the ruler is known to be wired and oriented before any consumer claim rests on it; - an ANTI-VACUITY tooth: one vertex is moved a known 3.0 mm and must be DETECTED at 3.0 mm, so a comparator that always answered zero could not pass; - a MIRROR that has ZERO deviation and is still wrong. It is here because it proves the deviation ruler alone is insufficient, which is the entire reason orientation and scale are separate axes. The fixture is assembled at RUNTIME under /tmp/nx_xport_gate so this gate never shares scratch with a production beat, and it is idempotent: re-running overwrites its own artifacts and asserts nothing about what was there before. license_tier: ORIGINAL No hw writes (Rule 26). expect_exit: 0