Merge pull request 'fix(build): fix build errors' (#5) from web into main

Reviewed-on: #5

src/pages/student/QuestMap.tsx

@@ -12,7 +12,7 @@ import { ChestOpenModal } from "../../components/ChestOpenModal";
 import { InfoHeader } from "../../components/InfoHeader";
 import { Canvas, useThree, useFrame } from "@react-three/fiber";
 import { Island3D } from "../../components/Island3D";
-import { Billboard, OrbitControls, Stars, Text } from "@react-three/drei";
+import { OrbitControls, Stars } from "@react-three/drei";
 import * as THREE from "three";
 
 // ─── Map geometry ─────────────────────────────────────────────────────────────
@@ -860,11 +860,6 @@ const RouteSegment = ({
       {/* Travelling ship on the active leg */}
       {isActive && !isDone && (
         <group ref={shipRef}>
-          <Billboard>
-            <Text fontSize={0.3} anchorX="center" anchorY="middle">
-              ⛵
-            </Text>
-          </Billboard>
           {/* Gold wake glow disk */}
           <mesh rotation-x={-Math.PI / 2} position-y={0.04}>
             <circleGeometry args={[0.19, 16]} />