Energy Filament Theory (EFT) A21: Three-Residual Consistency Protocol Family — Co-window Geometric Closure of Δμ–Δt_res–δκ

This record publishes EFT-A21, the “Three-Residual Consistency Protocol Family” in the EFT methods-layer protocol library. A21 standardizes an auditable workflow to test one-map multi-probe geometric closure among three aligned residual channels: distance-modulus residual Δμ (co-oriented as Δμ̃≜−Δμ), strong-lens time-delay residual Δt_res, and weak-lensing convergence residual δκ, within a co-location & co-window. It provides two canonical use cases (patch-level one-map multi-probe; single-system geometric closure), hard-locks Sx/Ix/Tx guardrails, and aligns to the audit clause Z13/T3 (geometric consistency triangle).