What OPH unifies
OPH uses observer-overlap consistency as the common mechanism. A finite observer has access to a local patch; neighboring patches must agree where their observations overlap. The public world is the fixed point of that consistency problem.
On the gravity side, the framework follows the route from overlap, modular structure, generalized entropy, and horizon thermodynamics toward Lorentz structure and an Einstein branch. On the Standard Model side, it follows compact-gauge reconstruction and realized matter-branch inputs toward the observed quotient structure.