fix(render) Campaign FW3.2b-2: scenery buckets need the streaming recenter

The owner watched the first passing lifecycle run and reported most
outdoor scenery not rendering (terrain/buildings/interiors fine, no
seams). Root cause: retained-scene record positions are RENDER-ORIGIN-
RELATIVE (each landblock carries (lbX - CenterX)*192 offsets), but the
walk world data bucketed outdoor statics by treating them as absolute -
garbage landblock bytes, so the walk's landscape-cell turns read empty
buckets and trees/rocks/fences never drew. LandscapeCellId now adds the
frame's RenderCenterLbX/Y back to the relative block index, producing
the TRUE cell ids the walk's OnLandscapeCellTurn emits. Buildings and
cell statics were unaffected (id-keyed, not position-bucketed).

The same run confirmed the campaign thesis live: NO SEAMS at the
doorway class under walk order + retail depth, with the lift hack
still present (its retirement is FW3.3).

Suites: hermetic 6,750/0.

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

src/AcDream.App/Rendering/RetailPViewRenderer.cs

@@ -1167,7 +1167,11 @@ public sealed class RetailPViewRenderer
         Walk.WalkCell? cameraCell,
         Walk.WalkLandscape landscape)
     {
-        _walkWorldData!.BeginFrame(_sceneFrameProduct!.SceneQuery, ctx.PlayerLandblockId ?? 0u);
+        _walkWorldData!.BeginFrame(
+            _sceneFrameProduct!.SceneQuery,
+            ctx.PlayerLandblockId ?? 0u,
+            ctx.RenderCenterLbX,
+            ctx.RenderCenterLbY);
 
         Action clearInteriorDepth = () =>
         {