nx_eco_scorecard_gate.nx

nx_eco_scorecard_gate.nx -- known-answer gate for the sovereign ecosystem scorecard. Every industry formula is checked against a HAND-COMPUTED expected value in a seeded arena, so a silent formula drift cannot masquerade as a healthy grade: coverage (HAVE=2/GAP=0 over 2n) -> 500; SQALE 1920min/(4 organs x120 LOC x30 min) -> 133permil = rating C (tests the BAND, not just the number); OpenSSF risk-weighted (10x100 + 0x50)/(10x150) -> 666; self-measured organ count via recursive walk with .nx filtering -> 4 (a .txt and a nested dir prove the filter and the recursion); duplication 3/4 -> 750permil = FAIL vs the 30permil SonarQube gate (tests the FAILING direction, the one that matters); and fail-closed RED when the external battery manifest is absent. The arena is seeded as NATIVE SEG-STORE PLANES (not .tsv) because that is what the shipped organ reads -- a gate that fed it a format production no longer uses would be testing a fiction. license_tier: ORIGINAL expect_exit: 0