A Survey of Related Prior Work for the Observer-System Beat Conjecture: Relation to Prior Programs and the Locus of the Testable Regime (Supplement)

A post-publication literature survey supplementing the Observer-System Beat conjecture (Concept DOI 10.5281/zenodo.20967081). Within the range surveyed, no prior work proposes/tests/observes the same beat + irrational-ratio Weyl-equidistribution mechanism for the emergence of Born statistics. Prior programs sharing the problem-consciousness (La Cour-Williamson; Khrennikov PCSFT; method of arbitrary functions) and adjacent work (Conlon et al. coherent-LO Born test; t Hooft cellular automaton) are organized by possible relation. Atomic-clock metrology is identified as the natural testbed, but the discriminating measurement (single-shot projection statistics as a function of commensurability at fixed relative phase) is, within the range surveyed, not performed. Bilingual (Japanese/English). The logical connection to the preceding paper is left as future work; no claim of mechanism identity or experimental confirmation is made.