feat: Add player markers to the scene for better visibility

client/src/components/Map3D.jsx

@@ -662,6 +662,11 @@ function Scene() {
         </React.Fragment>
       ))}
 
+      {/* Players */}
+      {players.map((player) => (
+        <PlayerMarker key={player.playerID} player={player} />
+      ))}
+
       {/* Camera controls */}
       <OrbitControls
         target={centerPoint}