Merge branch 'main' into claude/eloquent-hugle-42119e

# Conflicts:
#	.gitignore

src/AcDream.App/Rendering/RetailPViewRenderer.cs

@@ -146,6 +146,12 @@ public sealed class RetailPViewRenderer
             prepareCells = _lookInPrepareScratch;
         }
 
+        // A7 #176/#177: scope this frame's point-light pool to the cells actually being
+        // drawn, NOW that the flood has resolved the visible set (retail collects lights
+        // per-frame over visible_cell_table). Must run before the cell/entity draws below
+        // that select from LightManager.PointSnapshot.
+        ctx.RebuildScopedLights?.Invoke(prepareCells);
+
         _envCells.PrepareRenderBatches(
             ctx.ViewProjection,
             ctx.CameraWorldPosition,
@@ -1102,6 +1108,16 @@ public sealed class RetailPViewDrawContext : IRetailPViewCellDrawContext
     public Action? DrawUnattachedSceneParticles { get; init; }
     public Action<IReadOnlyList<WorldEntity>>? DrawDynamicsParticles { get; init; }
     public Action<RetailPViewFrameResult>? EmitDiagnostics { get; init; }
+
+    /// <summary>A7 #176/#177: rebuild the point-light snapshot scoped to the cells
+    /// this frame actually draws — invoked AFTER the portal flood resolves the visible
+    /// set and BEFORE any cell/entity draw (the faithful port of retail's per-frame
+    /// light collection: <c>CObjCell::add_*_to_global_lights</c> walked over
+    /// <c>CEnvCell::visible_cell_table</c>). The argument is every cell drawn this frame
+    /// (main flood + interior-root look-ins). A cell-less light (viewer fill) is kept
+    /// regardless. Null-safe: outdoor/no-flood callers leave it unset and keep the
+    /// legacy full-pool snapshot.</summary>
+    public Action<IReadOnlySet<uint>>? RebuildScopedLights { get; init; }
 }
 
 public sealed class RetailPViewFrameResult