P1 membership is DONE (proven to already match retail; the 0/11 was a cdb capture artifact;
merged + pushed). P2 root cause localized to BSP Path 5 grounded step-up: the Path 5 wrappers
(DoStepUp=retail step_up, DoStepDown=retail step_down) are verified faithful + reached; the
divergence is in the step-up CLIMB (find_walkable/step_sphere_down up-adjust when sp.StepUp=true).
- docs/research/2026-06-03-p2-door-stepup-handoff.md: canonical P2 pickup + fresh-session prompt +
DO-NOT-RETRY (the wrappers) + the tooling note (xunit swallows Console.WriteLine).
- master-plan §3: P1 marked DONE + the (a)-(d) deletes/unifications re-scoped to approval-gated
refactors of working code; P2 localization recorded.
- CLAUDE.md M1.5: dated 2026-06-03 pointer (P1 done, P2 active, render seam in P3/P4, pickup doc).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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>
