Add surfaceDisplacementEnabled to water material tests and validation

tests/domain/build-runtime-scene.test.ts

@@ -733,7 +733,8 @@ describe("buildRuntimeSceneFromDocument", () => {
           colorHex: "#2f79c4",
           surfaceOpacity: 0.7,
           waveStrength: 0.35,
-          foamContactLimit: 6
+          foamContactLimit: 6,
+          surfaceDisplacementEnabled: false
         }
       }
     });

tests/domain/create-box-brush.command.test.ts

@@ -296,7 +296,8 @@ describe("box brush commands", () => {
             colorHex: "#3a7dc2",
             surfaceOpacity: 0.65,
             waveStrength: 0.4,
-            foamContactLimit: 6
+            foamContactLimit: 6,
+            surfaceDisplacementEnabled: false
           }
         }
       })
@@ -308,7 +309,8 @@ describe("box brush commands", () => {
         colorHex: "#3a7dc2",
         surfaceOpacity: 0.65,
         waveStrength: 0.4,
-        foamContactLimit: 6
+        foamContactLimit: 6,
+        surfaceDisplacementEnabled: false
       }
     });
 
@@ -324,7 +326,8 @@ describe("box brush commands", () => {
         colorHex: "#3a7dc2",
         surfaceOpacity: 0.65,
         waveStrength: 0.4,
-        foamContactLimit: 6
+        foamContactLimit: 6,
+        surfaceDisplacementEnabled: false
       }
     });
   });

tests/domain/scene-document-validation.test.ts

@@ -552,7 +552,8 @@ describe("validateSceneDocument", () => {
       water: {
         colorHex: "#3a7dc2",
         surfaceOpacity: 0.6,
-        waveStrength: 0.3
+        waveStrength: 0.3,
+        surfaceDisplacementEnabled: false
       }
     };
     (invalidWaterBrush as any).volume = {
@@ -599,6 +600,10 @@ describe("validateSceneDocument", () => {
           code: "invalid-box-water-wave-strength",
           path: "brushes.brush-invalid-volume-water.volume.water.waveStrength"
         }),
+        expect.objectContaining({
+          code: "invalid-box-water-surface-displacement-enabled",
+          path: "brushes.brush-invalid-volume-water.volume.water.surfaceDisplacementEnabled"
+        }),
         expect.objectContaining({
           code: "invalid-box-fog-color",
           path: "brushes.brush-invalid-volume-fog.volume.fog.colorHex"

tests/domain/water-material.test.ts

@@ -608,8 +608,9 @@ describe("water material helpers", () => {
     expect(material.uniforms["fogDensity"]).toBeDefined();
     expect(material.uniforms["surfaceOpacity"]?.value).toBeGreaterThan(0.14);
     expect(material.uniforms["waveStrength"]?.value).toBe(0.35);
+    expect(material.uniforms["surfaceDisplacementEnabled"]?.value).toBe(0);
     expect(material.uniforms["isTopFace"]?.value).toBe(1);
-    expect(material.vertexShader).not.toContain("transformed.y +=");
+    expect(material.vertexShader).toContain("surfaceDisplacementEnabled");
     expect(result.contactPatchesUniform?.value).toHaveLength(MAX_BOX_BRUSH_WATER_FOAM_CONTACT_LIMIT);
     expect(result.contactPatchShapesUniform?.value).toHaveLength(MAX_BOX_BRUSH_WATER_FOAM_CONTACT_LIMIT);
     expect(result.reflectionTextureUniform).not.toBeNull();