Disproof #77 Independently Verified — Sonnet 4.6 and GLM-5.2 confirm 422c FALSE

Two independent verifications confirm Opus 5's Disproof #77. Sonnet 4.6: ALL CHECKS PASSED, H_λ family confirmed (margin → ∞). GLM-5.2: verified counterexample X (n=50,i=3,RHS=2), odd variant Y (n=49), H_λ family (λ=1→120, λ=2→228, λ=3→336), and exhaustive check orders 4-8 (12,109 graphs, 0 violations). Public surfaces updated to "Seventy-seven." Conjecture 422c stood 15 years 8 months.