Deliverable 1: docs/research/2026-06-11-building-render-acdream-vs-retail-
comparison.md - the acdream-vs-retail architecture comparison synthesized
from two ultracode mapping fan-outs (11/12 areas, ~90 agents, every retail
claim Ghidra/pc-cited, every acdream claim file:line, 40/76 divergences
adversarially verified so far; raw per-area evidence committed under
docs/research/2026-06-11-holistic-map/).
Headline findings: (1) retail flattens GfxObjs/cells at load exactly like
us (ConstructMesh + RemoveNonPortalNodes) - the MDI pipeline survives;
(2) the phantom/door mechanism is the skipNoTexture draw-time surface gate
(dat-confirmed); (3) retail never geometrically clips world geometry -
aperture exactness is a DEPTH discipline (punch maxZ1 / seal maxZ2 / gated
clear + far-to-near whole-mesh draws) - reframes #114; (4) flood admission
is already faithful, the trigger/depth/multi-view/cone-culling layers are
missing; (5) #115 root cause verified (boom damping severed from the
published collided viewer); collision A6.P4 design verified with
corrections (signed other_portal_id >= 0 gate).
Deliverable 2: docs/plans/2026-06-11-building-render-port-plan.md - the
phased port plan (BR-1 surface gate, BR-2 depth punch/seal, BR-3 delete
the shell chop, BR-4 draw-driven floods, BR-5 viewconeCheck, BR-6 one
gate, BR-7 collision A6.P4, BR-8 camera/lighting/LOD) with per-phase
acceptance criteria, bug closures, keep-list, and a playable-after-every-
phase migration order. AWAITING USER APPROVAL - no implementation.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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