Addendum IV to the Berg Theory

Addendum IV develops the quantum-fluctuation-facing sector of the Berg Theory as a local, state-dependent modification of the kinetic response of a single complex energy-web field. No additional fluctuation field or independently adjustable source is introduced. Instead, the native derivative sector of the action is dressed by a positive response factor. Variation of the action then fixes the corresponding companion terms in the field equation. The construction distinguishes kinetic response from radial restoring behaviour, ordinary attenuation, anisotropic propagation and matter retention. Version 7 establishes a clearer hierarchy between direct predictions, conditional response kernels, empirical bounds and constitutive transport extensions. Its most direct native-field prediction is a fixed-normalization multimode test: under one approximately homogeneous positive loading increment, the change in inverse response must vary linearly with transverse mode scale, with a fixed sign and a parameter-free three-mode relation. Additional scalar phase and interface routes translate independently specified physical profiles into phase accumulation, reflection and finite-width transfer observables. A separate anisotropic branch is treated as a precision-bound channel rather than as an automatic consequence of scalar kinetic response. A strictly homogeneous response normalization remains locally unobservable without independent calibration. The addendum also develops a long-baseline optical transport hypothesis for two continuous, equally polarised and equal-frequency light streams overlapping at a small nonzero angle. At the exact physical floor, no negative breach below the floor is admitted. In an energized background, displaced above-floor energy may form a transient trail followed by a continuously renewed, lagging refill response. The framework distinguishes first-contact repair, repeated same-sense accumulation, dynamic route crossing, stabilization, finite-window retention and subsequent assimilation, while requiring complete energy- and momentum-accounting. This branch is constrained by causality and conservation, but its absolute trajectory and retained-transfer coefficients are not fixed by the minimal scalar action. A separate auxiliary scalar contact model provides a conditional side-scattering calculation under an explicit optical bridge. It relates finite-beam angular and spatial overlap to measurable side depletion, while retaining an ideal collinear null in the corresponding reduced limit. This model does not derive directed wake transfer and supplies no universal positive minimum signal. Null results therefore constrain the declared experimental corridor rather than excluding every possible matched realization. The publication package contains the Main Article and four technical appendices. Appendix A provides the mathematical development, including effective-action control, field-space invariance, causal response, stress-energy closure, normalization, optical matching and long-baseline transport. Appendix B defines evidential classes, reproducibility requirements and decision gates. Appendix C gives experimental and reconstruction protocols for the multimode, phase, interface, anisotropic, long-baseline and residual-bound routes. Appendix X contains the complete symbol register. The public supplementary package contains deterministic reproduction scripts, derived tables, protocol templates, validation receipts, file lists and checksum manifests. It reproduces the fixed-normalization multimode algebra and provides an illustrative scalar phase worksheet. It contains no raw third-party data, requires no network access and does not constitute experimental confirmation. Together, the manuscripts and reproducibility assets formulate quantum-fluctuation-facing phenomena as conservative, same-field kinetic-response corrections with an explicit action-level origin, controlled validity conditions and clearly separated evidential status. Version 7 provides falsifiable signs, shapes, ratios, nulls and interface relations while identifying which observables remain profile-dependent, bound-facing, constitutive or not yet absolutely normalized.