nx_maint_unify.nx

nx_maint_unify.nx -- R3 unify: the 5 physics kernels speak ONE health language. Each kernel's native verdict maps to a common severity scale so the ledger / DIY app / enterprise fleet-rollup present a uniform grade across every asset type -- and safety-critical faults (overheat, ground-fault, overload, burst) UNIFORMLY surface as SAFETY regardless of which kernel found them. Plus a unified MaintResult row. (The kernels keep their own typed entry points -- their inputs genuinely differ -- so "unify" is at the verdict/severity layer, which is what the platform surface actually needs; forcing one input signature would be worse.) Operator (2026-06-23): build "from the hardware rung up each rung" -- this is R3, consolidating R2's five kernels into one engine the fronts can consume. NEVER-BRICK (#26): pure mapping; no syscalls, no device writes. genealogy_id: project-maintenance-platform-sclass-2026-06-23 (R3 unify) license_tier: ORIGINAL