Particle Spectrum
How intersection angle creates mass, charge, and spin
Pre-temporal worldlines possess no mass, charge, or spin. These emerge **only** upon intersection with $\Sigma$. The angle $\theta$ determines everything: grazing strikes ($\approx 90^\circ$) yield massless photons; shallow strikes ($30^\circ$–$60^\circ$) yield dark matter; perpendicular strikes ($\approx 0^\circ$) yield standard model particles. Quantization arises from timeline resonance: only angles satisfying $\Delta\Phi = 2\pi k$ form stable states.