fix: remove world splat movement hints

components/canvas/world3d/World3DViewer.tsx

@@ -6,7 +6,6 @@ import { Canvas, type ThreeEvent, useFrame, useThree } from "@react-three/fiber"
 import { SparkRenderer, SplatFileType, SplatMesh as SparkSplatMesh } from "@sparkjsdev/spark";
 import {
   AlertCircle,
-  Crosshair,
   Globe,
   ImageIcon,
   Loader2,
@@ -1679,20 +1678,6 @@ function WorldSplatScene({
               </div>
             ) : null}
           </div>
-          {interactionReady && (firstPerson || interactionMode === "hotspot") && (
-            <div className="flex items-end justify-between gap-3">
-              {firstPerson && interactionMode === "navigate" ? (
-                <div className="rounded-2xl border border-white/10 bg-black/55 px-3 py-2 text-[10px] text-zinc-300 shadow-xl backdrop-blur-sm">
-                  WASD / 方向键移动，拖动画面转向，Q/R 上升，E/F 下降
-                </div>
-              ) : (
-                <div />
-              )}
-              <div className="flex h-12 w-12 shrink-0 items-center justify-center rounded-full border border-white/10 bg-black/55 text-zinc-100 shadow-xl backdrop-blur-sm">
-                <Crosshair className="h-5 w-5" />
-              </div>
-            </div>
-          )}
         </div>
       </Html>
     </>