MST Dark Matter v8: A Falsifiable Phenomenological Test of History-Dependent Gravitational Response

MST Dark Matter v8 reformulates the Multi-Simulation Thesis dark-matter program around a narrower and explicitly falsifiable question: can present gravitational response retain a measurable dependence on prior quantum stress-energy correlation history after the present conventional source state and all established history-dependent effects are accounted for? Earlier MST-DM formulations treated residual coherence associated with quantum-collapse activity as a candidate source of effective dark matter and advanced an approximately 5 Hz / 200 ms laboratory signature. v8 withdraws countable collapse density as a fundamental source, demotes the 5 Hz scale to a historical exploratory prediction, removes apparatus-dependent rescue mechanisms and hidden thresholds from the active model, and makes the zero-response case an explicit null. The revised phenomenology is represented schematically by G_{μν} = 8πG⟨T_{μν}⟩ + Δ_{μν}^{known} + εΞ_{μν}^{hist}, with H₀: ε = 0. The term Ξ_{μν}^{hist} is not claimed to be derived in this paper; it is a placeholder for a possible persistent mean gravitational response to prior quantum stress-energy correlation history beyond established semiclassical, stochastic, and conventional gravitational effects. The primary proposed laboratory test is an Uncompute History Test: prepare two systems with matched present source states but verified different quantum histories and compare their subsequent gravitational response. A valid candidate signal must survive present-state matching, history-assignment reversal, source-position reversal, classical-drive controls, thermal and electromagnetic controls, ordinary mass-energy accounting, and independent replication. The astronomical program is correspondingly reframed. Star-formation, quenching, and merger histories are treated as physical-history proxies rather than fundamental sources. Their role is to test whether reconstructed history adds predictive information to present gravitational observables after standard halo, environmental, morphological, and assembly variables are controlled. A detected history effect would still not establish a dark-matter replacement. A viable dark-matter interpretation must reproduce pre-recombination gravitational behavior, CMB acoustic structure, structure growth, galaxy dynamics, lensing, and cluster-merger morphology under one common response law. v8 therefore fixes the order of inference as existence → dynamics → cosmology → dark-matter fraction. The theory is permitted to fail at every stage.