nx_evolution_ladder_gate.nx

nx_evolution_ladder_gate.nx -- THE REFEREE for the graceful-evolution ladder organ. Proves nx_evolution_ladder grades the tree HONESTLY and that it can actually SEE every failure mode (no fabricated greens): POSITIVE (real knowledge/registry/evolution_ladder.tsv): T1 healthy: HW root present, no broken parents, 0 unproven-exceed-claims, 0 purposeless, 0 never-brick-unsafe. NEGATIVE CONTROLS (each a hermetic /tmp fixture; the flag MUST fire): N1 liar-kill : a layer claiming EXCEED with a missing evidence file -> unproven >= 1 N2 broken-tree : a layer whose parent names no layer -> broken >= 1 N3 never-brick : a hardware-write layer marked brickable (Rule 26) -> unsafe >= 1 N4 purposeless : a layer with an empty telos -> purposeless >= 1 SPECIFICITY CONTROL (the liar-kill must NOT be blanket): N5 measured-with-real-artifact -> unproven == 0 AND healthy (a real measured claim is allowed) GREEN only if T1 AND N1..N5 all hold. Evidence rows + verdict -> knowledge/status/ evolution_ladder_gate.log via fa_appendz. Exit 0/1. Sovereign: imports the organ + nx_framed_append + nx_syscalls (no gcc). license_tier: ORIGINAL