Muon Mass, Lifetime, and Magnetic Moment as a Transient Non-Cap 5D → 3D Closure Regime: A No-Fit Candidate Audit within the OUXSPACE Framework

This preprint presents a geometric–temporal reconstruction of the muon within the OUXSPACE framework. The muon is not treated as a heavier copy of the electron or as a fundamental particle-object, but as an electron-charge-labelled, transient, non-cap closure regime associated with a 5D → 3D projection channel. The measured muon/electron mass ratio is not used as an input; it is reserved as an external comparator. The central mass expression matches the external muon/electron comparator at a relative residual of order 10⁻⁹. The same mass-position yields an internal period, a Compton-like closure-radius scale, and a spin-channel topology. Lifetime and magnetic moment layers are presented as strong candidate extension layers requiring formal closure lemmas before theorem-level status.