The doorway saga (void -> transparent walls -> flaps) proved patching the hybrid is hopeless:
retail does membership + collision + camera + render as ONE coupled pipeline; acdream
reimplemented pieces with mismatched criteria at the seams. Master plan to port ALL of it
verbatim: A membership (find_cell_list/find_transit_cells/find_building_transit_cells intrinsic,
no bridge), B uniform collision (no indoor/outdoor fork) + door collision, C camera
(update_viewer + find_visible_child_cell), D the full PView render (ConstructView/InitCell/
ClipPortals/GetClip/DrawCells/DrawPortal + the update_count watermark). KEEP/REPLACE/DELETE
lists, decomp anchors per function, P0-P6 sequence (apparatus-first, foundation-up, visual gate
each), and the kickoff prompt. Supersedes the render-only redesign's scope.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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