Update water contact patch collection and handling in rendering and runtime modules

tests/domain/water-material.test.ts

@@ -84,6 +84,52 @@ describe("water material helpers", () => {
     expect(patches).toHaveLength(0);
   });
 
+  it("preserves oriented contact regions for rotated boxes", () => {
+    const patches = collectWaterContactPatches(
+      {
+        center: {
+          x: 0,
+          y: 0,
+          z: 0
+        },
+        rotationDegrees: {
+          x: 0,
+          y: 0,
+          z: 0
+        },
+        size: {
+          x: 10,
+          y: 2,
+          z: 10
+        }
+      },
+      [
+        {
+          kind: "orientedBox",
+          center: {
+            x: 0,
+            y: 1,
+            z: 0
+          },
+          rotationDegrees: {
+            x: 0,
+            y: 45,
+            z: 0
+          },
+          size: {
+            x: 2,
+            y: 1,
+            z: 1
+          }
+        }
+      ]
+    );
+
+    expect(patches).toHaveLength(1);
+    expect(Math.abs(patches[0]?.axisX ?? 0)).toBeGreaterThan(0.65);
+    expect(Math.abs(patches[0]?.axisZ ?? 0)).toBeGreaterThan(0.65);
+  });
+
   it("builds a shared quality shader material for visible tinted water", () => {
     const result = createWaterMaterial({
       colorHex: "#4da6d9",