Solar Systems as Resonant Engines

This paper explains that the Solar System and the resonant engine specified in the companion machine paper are two instances of a single architectural family, rather than two systems that merely resemble each other metaphorically. Using the scholastic method of genus proximus et differentia specifica, the paper identifies the tetrad-cycle genus specified by Energetic First Principles (E1P) and reads the Solar System as a cosmic-scale instantiation of the same four-role architecture. The motor paper carries the engineering case; this paper carries the architectural-family argument at cosmic scale. The paper develops the Solar System as a resonant, gradient-bearing, signature-producing system and uses it to clarify why the resonant engine belongs to a broader class of architectures that produce coupled state-and-signature output. This paper is Paper II of the first Resonant Systems trilogy.