Energy Filament Theory (EFT) A18: Magnetic Moment Drift Protocol Family — Proton Odd-Linear vs Neutron Even-Quadratic Response to a Tension Gradient

This record publishes EFT-A18, the “Magnetic Moment Drift Protocol Family” in the EFT methods-layer protocol library. Under a controllable tension gradient (G) whose direction can be reversed and magnitude scanned, A18 operationalizes two testable predictions: a proton odd-linear micro-drift of μₚ (or gₚ), and a neutron even-function micro-drift with a suppressed linear term and quadratic scaling (dominantly ∝ G²). A18 hard-locks guardrails (gradient-reversal integrity, readout-chain invariance, pipeline stability), includes preregistration + Critical Step Hash + Minimal Artifacts + Audit Hooks, and aligns to Z13/T10.