nx_research_flow_gate.nx

nx_research_flow_gate.nx -- TEETH for the rivers-to-ocean research surface. THE DEFECT CLASS IT EXISTS TO CATCH: an index and the pages it indexes drifting apart. A brief gets published but never registered (invisible to the ocean and to every miner), or a row is registered pointing at a page that was never written (the ocean advertises a 404). Both read as success from one side. This is the "artifacts never placed where consumers look" class, made mechanical. THE PARTITION CLAIM: for every non-STUB row in the `resbrief-` plane there must be a served page at sites/nishifamily/<area>/<slug>.html, derived from the SAME two columns the ocean derives its links from -- so a row that renders a link here is a row whose target is proven to exist. STUB rows are corpus-only by declaration and are correctly NOT expected on disk. T4 is a BITE tooth: the presence detector must FIRE on a path that does not exist and stay SILENT on one that does. Without it, a gate that always returns "present" would pass this file green forever -- a green-before-the-defect-exists gate proves nothing (nx_gate_bite doctrine). license_tier: ORIGINAL No hw writes (Rule 26). expect_exit: 0