nx_license_check.nx

nx_license_check.nx -- Layer-3 lexical grader perspective. Enforces the LICENSING WALL per refined cardinal feedback-licensing-absorb-vs-copy-discipline (2026-05-15): "i dont want direct copies in the code that can be suable or allow loss of sovereignty i want the papers in the library but we need a wall that we arent copying from them something that needs attribution or licensing" Scans a substrate source file for the // license_tier: <TIER> header line. Only THREE tier values are permitted in substrate code: TIER_0_UNENCUMBERED -- public-domain / CC0 / U.S. Govt work; verbatim safe INDEPENDENT_REDERIVE -- built from published spec, no source copy ORIGINAL -- substrate-original, no external ancestor Anything else (or no header at all) is a LOSE. The grader emits a named_improvement string telling the maintainer exactly how to remedy the file. Substrate-original code, written from scratch in this file. license_tier: ORIGINAL nx_safety_envelope: (schema: nishi-library/seeds/safety-critical-standards.toml) intended_use: "Layer-3 license-tier grader -- enforces the TIER_0_UNENCUMBERED / INDEPENDENT_REDERIVE / ORIGINAL wall across substrate. Refuses sneaking in AGPL / GPL / MIT / Apache / OSI annotations. Cardinal feedback-no-standard- OSI-license-custom-tbd enforcement point." sil_target: SIL2 (licensing wall breach = sovereignty loss + suability risk; cardinal- critical)