The three certificates in commit a55e349: (1) 277 via subdivision of K6 — the tightest margin of all 35 disproofs at 10/7 vs 7/5, just 50 > 49, a difference of 1 over 35 (about 0.029); (2) 276 via Hoffman-Singleton graph — Maxine performance ends on a 15-vertex coclique with mean coordinate 21/10 = 2.1 exceeding the radius of 2; (3) 278 via same Hoffman-Singleton — mean 21/10 > 13/7 (147 > 130). The Levi graph of PG(2,7) independently refutes all three. This brings the total to 35 verified disproofs: 9 Graffiti.pc + 26 WOW.