This paper builds upon https://vixra.org/abs/2402.0149 and https://vixra.org/abs/2406.0113, which proposed a novel realist framework for making sense of standard quantum theory. The framework is said to be ``realist'' in that it provides a complete observerless picture of quantum state ontology and dynamics, in conjunction with a mechanistic account of measurement processes, that answers basic questions of what, where, when, and how.The framework embodies a general quantum ontology consisting of two entities, called W-state and P-state, that respectively account for the wave- and particle-like aspects of quantum systems. W-state is a generalization of the wavefunction, but has ontic stature and is defined on the joint time-frequency domain. It constitutes a non-classical local reality, consisting of superpositions of quantum waves writ small. P-state is a non-local hidden variable that constrains the probability distributions governing deferred measurement outcomes, such as in the Einstein-Podolsky-Rosen (EPR) thought experiment. The framework features a full solution of the core measurement problem, which pertains to the global coordination within quantum systems required to bring about wavefunction collapse in causal fashion consistent with special relativity.The extent of development in those preceding papers amounts essentially to a quantum theory of matter particles. In this paper, it is shown how the realist quantum-theoretic framework for particles can be extended to encompass electromagnetic fields. The paper elaborates upon the implications for quantum gravity and how other interpretations (e.g., Many Worlds, GRW) deepen understanding of the realist framework.