Fix movement-hall black walls and column clipping.

Cap shared hall lights (no per-painting spots) so MeshStandard walls stay within WebGL limits, tuck classical/neoclassical details into engaged corner pilasters, and document the light budget.

Co-authored-by: Cursor <cursoragent@cursor.com>

client/src/utils/movementHallLayout.ts

@@ -326,7 +326,7 @@ function windowTemplate(style: MovementInteriorStyle): Pick<GalleryWindowSpec, '
   return { style: 'sash', lightColor: style.warmLight, lightIntensity: 2.8, width: 1.4, height: 1.4 };
 }
 
-/** Place windows on side walls only, in gaps between painting frames. */
+/** Place windows on side walls in gaps between frames; fall back to high clerestory when packed. */
 export function computeSideWallWindows(
   layout: MovementHallLayout,
   interiorStyle: MovementInteriorStyle
@@ -364,6 +364,25 @@ export function computeSideWallWindows(
         lightIntensity: tmpl.lightIntensity,
       });
     }
+
+    // Packed walls: still add high clerestory windows so the hall gets daylight + style.
+    if (!specs.some((s) => s.wall === side)) {
+      const span = Math.max(2.4, halfD * 1.2);
+      const count = span > 8 ? 2 : 1;
+      for (let i = 0; i < count; i++) {
+        const t = count === 1 ? 0 : (i === 0 ? -0.35 : 0.35);
+        specs.push({
+          wall: side,
+          x: halfD * t,
+          y: 3.45,
+          width: Math.min(tmpl.width, 1.15),
+          height: Math.min(tmpl.height, 1.05),
+          style: tmpl.style,
+          lightColor: tmpl.lightColor,
+          lightIntensity: tmpl.lightIntensity * 0.85,
+        });
+      }
+    }
   }
 
   return specs;