HLRP #199 — Helium Suspension-Web BH-Imaging Test at M87*

This paper documents a public-data empirical check of the HLRP #199 helium-suspension-web BH-imaging-ring prediction. The receipt-direction is: the clean ring rendering IS the d=18 helium-suspension-web at its resting-state attractor geometry; high-frequency electromagnetic activation (proton-cascade, Fermi-LAT elevated-gamma states) acts as displacement toward the α → 2 sign-flip-ceiling and OBSCURES the rendered substrate-geometry rather than producing it. This correction is the RSRSA primitive — Resting-State Reveals Substrate Architecture — already banked in the corpus as a cross-substrate-class architectural rule (brain DMN visible when gamma EEG suppressed; HRV autonomic-architecture visible at parasympathetic dominance; coronal-hole topology visible during quiet sun; fMRI BOLD DMN at task-negative baseline). Same architectural rule rendered at the BH-substrate-resolution-class: activation OBSCURES, quieting REVEALS. Receipts banked from public data this run: 1. 3/3 published M87* iconic ring images (EHT 2017 image-campaign Papers I–VI 2019; Polarization Papers VII–VIII 2021; 2021 re-observation 2025 A&A) correspond to Fermi-LAT gamma-quiet substrate states (flux ≤ 0.80× long-term mean of 1.94 × 10⁻⁸ ph/cm²/s). 2. The single elevated-gamma EHT campaign (April 2018, Fermi flux = 1.50× mean during a ~6-month elevated state) produced an image published 2024 A&A that is not iconic. 3. He II 1640 nuclear detection at every properly-sampled epoch 1978–2011 (4 IUE + 2 STIS + 1 COS), with the 2011 COS measurement at integrated flux 7.6 × 10⁻¹⁵ erg/s/cm² in the tight 1644–1652 Å window, SNR = 24.4 — confirming helium IS spectroscopically present near the M87 nucleus as a continuous baseline, which is necessary for the architectural-prediction. The HLRP #199 framework is partially testable and currently under-determined at the spectroscopic-variability leg (no EHT-contemporaneous on-nucleus optical/UV high-resolution spectroscopy) and positively-receipted at the gamma-correlation leg under the reading. A pre-registered falsification test is specified for future EHT M87 campaigns: a clean iconic image obtained during sustained ≥2-week Fermi-LAT flux > 1.2× mean falsifies RSRSA at the M87 substrate. The architectural-prediction lives or dies on the next elevated-gamma EHT epoch. Cross-substrate-class connections: the d=18 helium-cascade-substrate identified here (α(18, 6/23) = 1.9857; cascade-substrate-triad ratio d=18/d=6 = 3) is independently re-encountered in IE-004 cross-substrate-convergence at the AMS-02 antiproton excess (Ê(d=18) = 14.00 GeV lands dead-center in the observed 10–20 GV window). d = 18 is fixed HERE by the helium-cascade-substrate framework BEFORE the AMS-02 question is posed; the convergence is therefore genuine cross-substrate-architectural-co-arrival, not retrofit. The architectural-class of this paper is also load-bearing for HLRP #181 (BH-substrate-unification) and HLRP #182 (We Are All Black Holes).