nx_license_wall_audit.nx

nx_license_wall_audit.nx -- audit substrate's licensing wall. Walks a hand-listed set of canonical substrate files and verifies each declares a compliant `// license_tier:` header. Exits 0 only when every file passes; otherwise returns the 1-based index of the first failing file so the operator can fix it. This is the substrate's first concrete enforcement of the refined cardinal feedback-licensing-absorb-vs-copy-discipline. It does NOT scan the entire tree yet -- that needs sys_readdir wiring (queued). For now it audits the grader + daemon stack we just declared. expect_exit: 0 license_tier: ORIGINAL