Team Cosine: Euclid DR1 2026

Pre-registered predictions from Mode Identity Theory for validation against ESA Euclid DR1 (Oct 21, 2026). MIT argues that the observed evolution in dark energy’s effective equation of state w_eff(z) arises from the observer’s phase position within a cyclic cosmology (Team Cosine); not from evolving vacuum energy, while the physical cosmological constant Λ remains constant. Locked predictions (Jan 8, 2026): phantom crossing z_cross = 0.66 ± 0.12, phase δ = −1.06 rad, w₀ ∈ [−0.85, −0.70], and non-zero curvature in w(z). Falsification criteria: z_cross ∉ [0.4, 0.9], CPL (linear) preferred over curved w(z) at Δχ² > 4, or w₀ ∉ [−0.9, −0.6]. Timestamped record for post-hoc validation. NO TUNING. NO EXCUSES. OCT 21.