Polish movement hall interiors: clear doors and bay columns, tone floors and windows.

Document hang keep-outs and period-module fixes; leave columns fixed while packing frames into gaps.

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

client/src/components/hall-details/primitives.tsx

@@ -1,5 +1,14 @@
 import { useMemo } from 'react';
-import { CEILING_Y, EMBED, WALL_INNER, shade, type RoomDims, type WallId } from './geometry';
+import {
+  CEILING_Y,
+  DOOR_CLEAR_HALF,
+  DOOR_CLEAR_Y,
+  EMBED,
+  WALL_INNER,
+  shade,
+  type RoomDims,
+  type WallId,
+} from './geometry';
 
 /** Wall-flush building blocks shared by the period interiors in this folder. */
 interface SurfaceProps {
@@ -32,9 +41,40 @@ export function WallBand({
   span?: number;
 }) {
   const alongZ = wall === 'left' || wall === 'right';
-  const len = (alongZ ? room.depth : room.width) * span;
   const thick = proud + EMBED * 2;
   const off = WALL_INNER + proud / 2 - EMBED;
+  const matProps = {
+    color,
+    roughness,
+    metalness,
+    emissive,
+    emissiveIntensity,
+  };
+
+  // End-wall bands that sit in the door height must leave a clear gap for exits.
+  const crossesDoor =
+    !alongZ && y - height / 2 < DOOR_CLEAR_Y && room.halfW > DOOR_CLEAR_HALF + 0.35;
+
+  if (crossesDoor) {
+    const z = wall === 'back' ? -room.halfD + off : room.halfD - off;
+    const sideLen = room.halfW - DOOR_CLEAR_HALF;
+    const leftX = (-room.halfW - DOOR_CLEAR_HALF) / 2;
+    const rightX = (room.halfW + DOOR_CLEAR_HALF) / 2;
+    return (
+      <group>
+        <mesh position={[leftX, y, z]}>
+          <boxGeometry args={[sideLen, height, thick]} />
+          <meshStandardMaterial {...matProps} />
+        </mesh>
+        <mesh position={[rightX, y, z]}>
+          <boxGeometry args={[sideLen, height, thick]} />
+          <meshStandardMaterial {...matProps} />
+        </mesh>
+      </group>
+    );
+  }
+
+  const len = (alongZ ? room.depth : room.width) * span;
   const args: [number, number, number] = alongZ ? [thick, height, len] : [len, height, thick];
   const pos: [number, number, number] =
     wall === 'back'
@@ -48,13 +88,7 @@ export function WallBand({
   return (
     <mesh position={pos}>
       <boxGeometry args={args} />
-      <meshStandardMaterial
-        color={color}
-        roughness={roughness}
-        metalness={metalness}
-        emissive={emissive}
-        emissiveIntensity={emissiveIntensity}
-      />
+      <meshStandardMaterial {...matProps} />
     </mesh>
   );
 }