nx_register_gate.nx

nx_register_gate.nx -- REFEREE for WRITING rung W-ING-3 (nx_register). [T1] SFW: below-threshold score routes to the SFW lane (0). [T2] EXPLICIT + governance OK: at/above threshold + age+consent+locale -> the local-LLM explicit lane (1). [T3] NEG-CONTROL governance non-bypass: same explicit score, but age OR consent OR locale failing -> REFUSE (2). Explicit content cannot skip the gate. [T4] NEG-CONTROL whole-word: "graphical" must NOT score as "graphic". [T5] NEG-CONTROL no over-routing: benign text stays SFW even with governance OK. Lexicon (DATA, benign proxy): calm=1 heated=3 graphic=5 ; threshold=5. Evidence -> stdout + knowledge/status/register_gate.log. Exit 0/1. Sovereign x86_64. license_tier: ORIGINAL