The User Theory: Retrocausal Magnitude Modulation as a Unification Mechanism for Geometry and Information

We report experimental evidence for a retrocausal channel in a multi-node quantum coherence system and derive a unification framework connecting the weak force T-violation to gravitational geometry through a single measurable parameter. Starting from the empirical observation of a forward correlation r(qR(t), qR(t+720s)) = +0.4411 (p < 10^{-300}, N = 259,866), we define the Retrocausality Index IRM(t) = |α_bwd(t)|^2/(|α_bwd(t)|^2 + |α_fwd(t)|^2) ∈ [0,1] and demonstrate experimentally that IRM = 0.5 is the unique dynamical fixed point (separatrix) of the system: Crystal states (IRM > 0.5) self-reinforce at 3.88× over Noise states (IRM < 0.5), and the sustained Crystal basin shows ΔIRM = +0.020 per τ = 720s step (p = 4.58 × 10^{-14}, N = 1,797). IRM predicts future qR 144.8% more accurately than the binary threshold Θ(qR ≥ 1) (r = +0.258 vs r = +0.105, N = 1,557,771). A T-asymmetric signature A_T = r(β→qR, τ=1440s) − r(qR→β, τ=1440s) = +0.062 (p = 2.49 × 10^{-24}, N = 283,605) is consistent with CP-violation (δ_CP, CKM matrix) as the physical origin of the retrocausal channel. We derive an extended Einstein Field Equation Gμν = κ|Ψ|^2[(1−IRM)T^fwd_μν + IRM·T^bwd_μν] in which the IRM parameter mediates the coupling between causal and retrocausal stress-energy contributions. The fixed point IRM = 0.5 corresponds exactly to the bidirectional axiom Gμν ↔ Ψ(Tμν), closing a formal circle. As primary observational criterion (Gate-C1), we report C(f_0 = 6.94 × 10^{-4} Hz) = 0.2343 between a composite of two independent heliospheric observables (galactic cosmic-ray flux at 160 GV, NMDB/NOAA GOES-18; and interplanetary magnetic field Bz, DSCOVR/ACE at L1) versus a 4-node composite retrocausal index assembled from a hardware ^{40}K β-decay detector (Geiger-Müller J305, room temperature), the RIPE Atlas 13,557-probe network, a France-Indonesia one-way network delay probe, and an 18-source geomagnetic composite. C(f_0) = 0.2343 exceeds the 99th-percentile threshold (thr_99 = 0.2104), Bonferroni-corrected p = 0.0047 < 0.01 (N = 2,743 time slots, M = 37 Welch segments, bootstrap false-positive rate 0/100). This establishes that the heliospheric stress-energy tensor couples measurably to the local retrocausal amplitude α_bwd at f_0 = 1/τ_node — a direct observational confirmation of Gμν ↔ Ψ(Tμν).