feat(render) Campaign FW3.3: ShellDrawLiftZ is RETIRED - cells draw at the dat origin

Retail draws cell geometry at the dat EnvCell origin verbatim; the
0.02 m lift was our z-fight stand-in (register row AP-32, deleted in
this commit). With the walk owning retail draw ORDER under
WorldDepthContract Less (first-drawn-wins: DrawBlock terrain-then-
objects per cell, DrawCells shells-then-contents), the coplanar
tie-breaks the lift compensated for are now resolved the way retail
resolves them.

Deleted at every site: the PortalVisibilityBuilder const + the
drawLiftZ Build parameter and its lifted exit-portal projection branch
(gate and drawn geometry now share ONE space); the seal/punch fan
lifts (DrawPortalDepthWrite + the walk's DrawWalkPunchFan); the
LandblockBuildFactory drawn-cell-transform lift (render and physics
share the one verbatim transform).

The #130 proof flipped exactly as its own doc predicted:
UnliftedGate_LeavesTheStripAtTheDrawnTopEdge is deleted (its premise -
gate space != drawn space - no longer exists), and the renamed
ExitDoorTopEdge_GateCoversTheDrawnApertureWithinPixelTolerance sweep
(147 eye/gaze combos at the Holtburg corner door) passes with both in
the same unlifted space (worst plane gap <= 1.2 px, scissor <= 0.15 px
- unchanged tolerances). Ten more replay-test call sites swept to the
new Build signature.

Suites: full Release build 0 warnings; hermetic 6,750/0; the 21
affected InstalledDat replay tests green; Walk conformance 40/1
untouched.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/AcDream.App/Rendering/Wb/EnvCellLandblockBuild.cs

@@ -353,12 +353,10 @@ public sealed class EnvCellLandblockBuildBuilder
             // two consumers decode the same dat fields for different needs)
             // so it stays a direct, auditable port of the FW1 test adapter
             // rather than reshaping LoadedCell's own list layout around it.
-            // cellTransform/inverse here are UNLIFTED (this method's
-            // cellOrigin/cellTransform params are the caller's
-            // physicsCellOrigin/physicsCellTransform — see
-            // LandblockBuildFactory.BuildInteriorEntitiesForStreaming, which
-            // keeps the +0.02 m ShellDrawLiftZ out of this transform) —
-            // exactly what the walk wants.
+            // cellTransform/inverse are the dat EnvCell origin verbatim —
+            // since FW3.3 retired ShellDrawLiftZ, render and physics share
+            // this one transform (retail draws at the origin; the walk's
+            // retail draw order owns the coplanar tie-breaks).
             Walk = WalkCellFactory.FromParsed(envCellId, envCell, cellStruct, cellTransform, inverse),
         };
     }