final changes

SerpentRace_Backend/src/Api/routers/gameRouter.ts

@@ -206,7 +206,26 @@ gameRouter.post('/join', optionalAuth, async (req, res) => {
             playerName: actualPlayerName
         });
 
-        res.json(game);
+        // Create game token for WebSocket authentication
+        const gameTokenService = container.gameTokenService;
+        const gameToken = gameTokenService.createGameToken(
+            game.id,
+            game.gamecode,
+            actualPlayerName || 'Anonymous',
+            actualPlayerId
+        );
+
+        // Return clean response with essential data + game token
+        res.json({
+            id: game.id,
+            gamecode: game.gamecode,
+            playerName: actualPlayerName,
+            playerCount: game.players.length,
+            maxPlayers: game.maxplayers,
+            gameType: LoginType[gameToJoin.logintype],
+            isAuthenticated: !!actualPlayerId,
+            gameToken: gameToken
+        });
     } catch (error) {
         logError('Join game endpoint error', error as Error, req, res);