nx_clause_gate.nx

nx_clause_gate.nx -- INDEPENDENT GATE: contract-text retrieval, redline drift, playbook risk. This gate runs on REAL CLAUSE TEXT, not on supplied flags. The teeth: u2605DELETION and INSERTION are measured SEPARATELY. The headline case below is a draft that RETAINS 100% of the standard clause -- it would score "identical" on any single similarity number -- while having an uncapped-liability carve-out bolted onto the end. Retention 1000, novelty 555, risk MEDIUM. That is precisely the edit that passes human review. u2605RETRIEVAL IS BY CONTENT, NOT BY HEADING: a paragraph that reads like an indemnity matches the indemnity standard even though it is offered as a liability clause. u2605AN UNMATCHED CLAUSE IS BLOCK, never "closest guess". u2605WORD BOUNDARIES ARE LOAD-BEARING: "liability" must not satisfy a search for "ability". license_tier: ORIGINAL No hw writes (Rule 26). expect_exit: 0