Toward QMU Gravitational Field Equations: Rotational Propagation Density, Closure Flow, and Phase Compression Geometry

Previous papers in the QMU Planck--Aether closure series established that the Planck system emerges from the bridge between electron closure and Aether closure, and that gravitational horizons correspond to rotational propagation boundaries satisfying: \[Gm_a/c^2=λ_C\] The present paper develops the first geometrical field framework arising from the Quantum Measurement Units (QMU) ledger. Rather than beginning from metric curvature or coordinate geometry, the analysis begins from rotational propagation structure governed by Ledger One: \[A_u={F_q}^2{λ_C}^2=c^2\] Within this interpretation, gravity emerges from gradients in rotational propagation density. The propagation-density field is introduced as: \[Φ_g ~ ∂θ/∂ s\] and is related to QMU torsional structure by: \[Φ_g ~ curl/λ_C\] Using Ledger One, this becomes: \[Φ_g ~ c^2/A_uλ_C\] Closure flow is then introduced as the redistribution of propagation-density loading through Aether geometry. For spherical propagation geometry, closure-flow conservation gives: \[F_c(r)=4π r^2Φ_g(r)=C_M\] and therefore: \[Φ_g(r)=C_M/4π r^2\] This provides a QMU geometrical basis for the inverse-square structure of gravitational behavior. In SI projection, the resulting acceleration is: \[g(r)=GM/r^2\] which may be rewritten in QMU closure-flow form as: \[g(r)=(λ_C {F_q}^2)(M/m_a)(λ_C^2/r^2)\] The paper further develops chronovibrational compression as the physical basis of clock-rate variation, redshift, and horizon freezing behavior. In this interpretation, clock-rate variation is a local change in propagation advancement within the present moment, not movement among separate time frames. A first-order propagation-density wave structure is proposed: \[∂_t^2Φ_g-v_Φ^2∇^2Φ_g=C\] supporting scalar, longitudinal, torsional, transverse, and closure-harmonic gravitational modes. The framework predicts natural ultraviolet closure boundaries, scalar and longitudinal gravitational modes, rotational closure harmonics, RMFD magnetometer correlations, and propagation-density wave behavior. This paper establishes the conceptual foundation for future fully developed QMU gravitational field equations based on rotational propagation density, closure flow, and phase-compression geometry.