The Riemann hypothesis — sealed all around, refused at the center

The deepest open question about the primes, and the cleanest demonstration of the engine's honesty. The FACTS seal: zeta(2)=pi²/6 (Basel), zeta(4)=pi⁴/90, zeta(6)=pi⁶/945, zeta(-1)=-1/12, the trivial zero zeta(-2)=0, and Euler's bridge zeta(2)·6 = pi² (https://narrowhighway.com/s/f8a7bbf4b8b3da9cadedda1d5228d6aa1683c60a1d79c3655c4eae419119276c , https://narrowhighway.com/s/51865a1cbf88345351a46cb24d1037fb156a2ea98bb0aa8723cde046de66aea9). The CONJECTURE itself — every nontrivial zero has real part exactly 1/2 — routes to INCOMPLETE: https://narrowhighway.com/s/f511680c4bbc1a84832fd930ef2206fb958147343b4e02b8b9955dab7ec3b078 . The engine seals everything around it and refuses the thing itself, because no one has proven it. This is one of the boundary map's 53 refusals — a CONJECTURE: true or false, unknown, and INCOMPLETE is honest silence, not a verdict. The million-dollar Clay problem lives exactly on the line the moat will not cross.