States the dark-sector canon of the finite-QEC substrate program: a Kibble-Zurek debris mechanism in which rapid boot crystallisation traps durable domain-wall fragments whose gravitating ledger is the recorded boundary shadow; an R4/MOND line-current mechanism producing the cubic AQUAL action and the baryonic Tully-Fisher relation under a Poisson line-current theorem; and the per-branch kill conditions — the island-floor abundance surface, the chiR = 1 normalisation, and cluster-scale lensing discrimination of pinned versus collisionless wall debris. Copyright (C) 2026 D. G. Elliman. Version 2.0 (2026-06-15). Updated the dark-sector taxonomy after the K04 mobility/equation-of-state and CMB third-peak audits. K04 debris is now treated as a pinned, substrate-static fossil or upper-bound component, not the mobile pressureless halo medium and not the component that completes the CMB third acoustic peak. Mobile halo and recombination-era cold clustering are charged to the R4/MOND line-current sector, the sterile-νR branch, or an AeST-class pressureless completion. The island-floor surface is retained as a fossil bookkeeping diagnostic rather than a full dark-matter budget. Version 2.0 (2026-06-15). Updated the dark-sector taxonomy after the K04 mobility/equation-of-state and CMB third-peak audits. K04 debris is now treated as a pinned, substrate-static fossil or upper-bound component, not the mobile pressureless halo medium and not the component that completes the CMB third acoustic peak. Mobile halo and recombination-era cold clustering are charged to the R4/MOND line-current sector, the sterile-νR branch, or an AeST-class pressureless completion. The island-floor surface is retained as a fossil bookkeeping diagnostic rather than a full dark-matter budget. 2026-06-20 canon refresh: Updated to current K04 pinned-fossil/defect-network status, archived island-floor branch, conditional w4/w6 and boundary-printer cooling status, R4 Stinespring/Fock MOND line ledger, zero-mode Brown-Kuchar dust/CMB completion branch, alpha0/208 source caveat, and halo double-counting gate; build/render checked locally; not Zenodo-synced. 2026-06-21 canon refresh: This version incorporates the 2026-06-21 ANCHOR/DRIFT/PTMS canon refresh and rebuilt local PDF.
David Elliman (Sun,) studied this question.