Part 1: G(b,c,y) identities verified on 637 grid points (grid exceeds multidegree => polynomial identities PROVED); T(m), E(u) blocks OK
Part 2: Murasugi congruence held on 3000 random general Seifert matrices; signature histogram {-4: 33, -2: 548, 0: 1829, 2: 554, 4: 36}; |det|=1 cases: 102 + 2321 targeted, all with sigma = 0 mod 8
Part 3: literal proof construction verified for all n = 1 mod 4, 5 <= n <= 100001: cases a/b/c = 15378/9580/42; largest Dirichlet prime l (literal least prime = t mod 4m) and its n: (21469783, 89693); genus-2 minimal-|y| route verified for 24843 non-squares, largest minimal y: (17, 8605)  (4.3s)
