Introspection soundness from local-isometry image estimates #
This assembles the actual transported strategy and its image-complement completion. Primitive estimates can be stated on the ideal register state, as in Pauli extraction, for the image effects of the original measurements. No future normalized measurement or transported game-success assumption is required. The full projected answer alphabet includes malformed outcomes.
Stated in a bipartite model (Phase 4 of planning/mipco-track.md): the original strategy lives in
any model M, and the local isometries are one local isometry of models Φ from M into the
register model Ξ.reg (ι → F). Its homomorphisms are not unital, so the transported measurements
are completed by the image complement (LocalIsometry.transportA), whose mass the state distance
controls (IsometricCompletionError).
The complete finite-game soundness argument with the original strategy and an actual local isometry. Primitive image estimates and the state bound are the only extraction inputs; all subsequent strategies are constructed.