Unary Field Theory: Two-Year Scalar Gravitational Wave Delay in LISA Band

UFT predicts a massive scalar gravitational-wave mode alongside the massless tensor mode. The scalar mode obeys Klein–Gordon dispersion, yielding a group velocity delay. For LISA band (f∼10−3Hz) and sources at D∼200Mpc, the scalar–tensor arrival delay is Δt≈2years, fully locked by mϕ. Physical Origin: The Goldstone mode φof Ψacquires mass via the same κt-flow that locks mϕ. Obs Strategy: Joint LISA–EM detection of SMBH mergers; extract scalar polarization via six‑polarization analysis (P18, DOI: 10.5281/zenodo.21208421). Discriminatory Power: Non-zero delay uniquely determines ms, and must be self-consistent with the scalar mass bound (P19, DOI: 10.5281/zenodo.21208509) and PBH double peak (P10, DOI: 10.5281/zenodo.21198124); altering mϕbreaks all three. All parameters are non‑fit and derived from the unified field theory main paper 10.5281/zenodo.21233078.