Conjecture 693 of Written on the Wall PROVED TRUE — two-line GF(2) proof

Minutes after #32, Opus 5 pushed commit 322fc56 with a POSITIVE result: Conjecture 693 ("independence ≤ n−m₁" where m₁ is multiplicity of 1 as eigenvalue over GF(2)) is TRUE. Two-line proof: restricting ker(A+I) to complement of independent set I is injective because for v∈I, equation x_v=Σ_{u~v}x_u has all neighbors outside I — so m₁≤n−α. New §9c reports rest of GF(2) block (701,702,704) as tight-at-zero with no violations through n=8. First positive result in the cascade alongside the 32 disproofs.