Optical Signatures of Structural Failure Regimes: A Dark-Matter-Facing Prediction Protocol with Immiscible Fluids as an SF-Isomorphic Calibration Surface

This artifact proposes a testable light-signature prediction protocol for Structural Flow failure regimes. The central hypothesis is conditional and test-facing: if dark-matter-associated gravitational persistence can be classified as Dissolution, Shear, Drift, Echo, or Lock, then those regimes should not all produce the same light-signature family. They should produce distinguishable optical measurement-shape clusters. The artifact separates the immediate calibration target from the long-range dark-matter-facing target. The immediate target is an immiscible-fluid calibration protocol: independently classify visible fluid failure regimes, state the predicted optical measurement-shape cluster, and then test whether light reports that cluster. The long-range target is later comparison against lensing, shear, reconstruction, and residual behavior associated with dark-matter-associated gravitational regions. The proposal does not claim direct detection of dark matter. It does not propose a new particle, field, or force. It does not replace ΛCDM, gravitational-lensing methods, General Relativity, Maxwell’s equations, photon theory, quantum electrodynamics, fluid mechanics, or numerical astrophysical modeling. It also does not claim that immiscible fluids are cosmological dark matter. Its immediate burden is narrower: to test whether the five-regime failure grammar has measurable physical traction in a controlled SF-isomorphic calibration surface. The governing experimental rule is: classify the fluid first; test the light second. A framework earns empirical traction not by being protected from failure, but by making predictions clear enough that failure can find it.