Can Spin-1 Composite Gravity Survive Binary-Merger Observables? A Strong-Field Observational-Closure Audit of Matter Coupling, Native Radiation Flux, Ringdown, Tetrad Causality, and Quantum StabilityThis manuscript develops a strong-field observational-closure audit for modified and alternative theories of gravity that make gravitational-wave or binary-merger claims. The audit is framed as a complement to weak-field formalisms such as the parametrized post-Newtonian framework: weak-field consistency is not enough for binary-merger observability. A theory must close the chain from matter coupling to detector response, native radiation flux, inspiral phasing, ringdown spectra, tetrad or metric causality, and, where claimed, quantum stability. The paper applies this audit as a case study to a recent Hamiltonian composite theory of gravitation based on tetrads and Lorentz Yang-Mills-type gauge fields. The source theory contains a formal spin-1 planar-wave sector and a static black-hole-like solution with tetrad sign reversal. The audit finds that a conditional metric-strain map can be written only under an unproven matter-coupling assumption. The native binary-merger observable chain remains unclosed: the source paper does not derive compact-binary source currents, a native radiative energy flux, low-order vector-radiation cancellation or bounds, inspiral phasing, ringdown quasi-normal modes, tetrad-causality closure, or quantum Ward identities. The verdict is not falsification. The result is a reality-strict closure classification: the source theory has not yet earned binary-merger observability. The manuscript includes a conditional appendix showing the symbolic map from linearized tetrads to metric detector strain under the explicit assumption that test masses respond only to the effective tetrad metric. Files included: mainᵥ060. pdf mainᵥ060. tex SHA256SUMSᵥ060. txt
Darren Dominic Fabri (Tue,) studied this question.