nx_dupname_gate.nx

nx_dupname_gate.nx -- THE ENTRY POINT nx_janitor_dupname NEVER HAD. nx_janitor_dupname.nx carries a complete, careful shadow-collision census (jdn_scan / jdn_collisions / jdn_pair_differs) and NO `func main`, so nothing in the ecosystem could ever run it: building it standalone answers nxasm rc=102 "UNDEFINED label: main". A capability with no entry point is indistinguishable from a capability that does not exist -- it greps as present, it reviews as done, and it can never fire. LAW: A LIB WITH NO IMPORTER IS AN UNRUNNABLE CAPABILITY THAT SCORES AS A BUILT ONE. TWO THINGS THIS DRIVER MUST SUPPLY, both of which the lib legitimately leaves to its caller: 1. CWD. jdn_scan opens the literal paths "runtime/_hdl_build" and "runtime", which only resolve with cwd=buildroot -- the working directory nx_sov_build_run uses. /api/gate_run executes from the nishihost root, so without the chdir both opens fail, jdn_collect returns 0, and the census would report ZERO collisions: a VACUOUS GREEN produced by looking at nothing. 2. A NON-VACUITY REFUSAL. So this gate REFUSES unless it sees files in BOTH dirs. An instrument that cannot find its corpus must say so, never report zero (the rule nx_routeguard and nx_gatebuilt_gate already follow). WHY THE COLLISION SET IS SPLIT BY CONTENT, not just counted: nx_sov_build_run probes _hdl_build FIRST, so a duplicated basename means the runtime copy NEVER COMPILES. If the two files are byte-identical that is merely redundant (COPY); if they DIFFER, you edit one and build the other, which is the bug that shipped TWO nx_sovereignty_audit.nx. Only DIFFERING pairs are a defect, so only they set the verdict. I NEEDED THIS MEASUREMENT AND GOT IT WRONG TWICE BY HAND FIRST (2026-08-07): nx_shelltool glob RECURSES, so intersecting buildroot/runtime against runtime/_hdl_build compared a set with its own superset (97pc, absurd); and the second attempt read a list the tool had honestly marked NX-TRUNCATED at capture_cap=163840 while my own filter discarded the warning line. ★A DECLARED TRUNCATION YOU FILTER OUT OF YOUR VIEW IS A SILENT ONE. license_tier: ORIGINAL Read-only: getdents + reads, writes nothing. (Rule 26) expect_exit: 0