A Theory for Harvesting Dark Matter: Dark-Sector Accumulation from Time-Evolving Wave Domains

This readable v1.0 theory note asks whether a coherent or partially coherent bosonic dark-matter field can form time-evolving three-dimensional wave domains whose net conserved-current flux produces secular accumulation and whether, only through an independently allowed coupling, energy carried by that field could be converted into visible-sector work without violating conservation laws. The derivation uses established mathematics: scalar-field dynamics and the Schrödinger-Poisson system, Madelung density and current, interference structure, level-set surfaces, the Reynolds transport theorem for moving control volumes, self-gravity, line-of-sight projection, and stress-energy accounting. It separates two questions that must not be conflated: accumulation may be physically possible while harvesting remains impossible. Scientific status: this is a speculative theory note and falsification programme, not an experimental discovery and not a claim that dark matter has been captured, created, or harvested. Any harvesting claim is gated by a complete energy ledger after conventional inputs are subtracted. Relationship to RBFL: this work was developed within the RBFL Research Project. Its main derivation is deliberately written in established mathematics, followed by a separate RBFL correspondence layer. That layer tests how the accumulation criterion could map onto the RBFL/RBFT research programme without modifying the locked RBFL acceleration law. Main RBFL record: https://doi.org/10.5281/zenodo.20724744. Project website: https://rbfl.link. Priority record: RBFL-DSAGH-v1.0. Readable edition, 24 September 2026.