Algorithmic Resolution of Wheeler's Delayed-Choice Paradox via History Deletion in a Quantum Graph

The current Paper 59 benchmark does not claim that a full laboratory optical delayed-choice experiment, exact interferometric amplitudes, or the complete quantum measurement formalism have already been derived from first principles. It does show that the verified QGEFT Monte Carlo engine now supports a direct algorithmic analogue of delayed choice with explicit left/right slits and a macroscopic detector region. In the reference `N=64` run, the engine opens `97` pending virtual branches, records `19` detector hits, resolves `5` left-slit and `4` right-slit virtual passages, but commits only `2` left and `2` right histories while discarding `32` alternatives. The defensible conclusion is therefore that delayed choice can be reinterpreted inside QGEFT as late branch-cache commit plus deletion of unused histories, rather than retrocausal rewriting of an already completed past.