Physical quantity semantics

Book IV also fixes the semantics of core microphysical quantities. Localization is an E_1 hom-object locus; momentum is the defect-transport invariant conjugate to localization; mass is stable defect-bundle calibration; energy is state/address/defect-budget readout; charge is boundary holonomy or winding obstruction; spin and polarization are fiber-mode readouts. Classical force is not primary here: it can be recovered as an effective response or gradient readout, but it is not a primitive E_1 invariant.