Coxeter or building interpretation of the Reye projection

Determine whether the map from $D_4$ root geometry to Reye geometry can be realized as a genuine typed shadow or residue construction in a building or related chamber geometry, and, if not, identify the exact obstruction.

Background

The paper observes that the 24-cell and the Weyl group W(F4)W(F_4) suggest a Coxeter-theoretic interpretation of the passage from the D4D_4 root configuration to the Reye configuration.

No building structure is assumed in the paper, and it remains unresolved whether the antipodal/projective reduction can be understood as a typed shadow or residue construction, or whether a precise obstruction prevents such an interpretation.

References

Can the map from $D_4$ root geometry to Reye geometry be realized as a genuine typed shadow or residue construction in a building or related chamber geometry? If not, it would be equally useful to identify the exact obstruction. No such building structure is assumed in the present note.

— The Reye geometry inside the 64 lines of the Schur quartic  (2609.10751 - Nurowski, 9 Sep 2026) in Section 5, Conclusions and open problems, item 4