feat: 添加游戏通用工具文件并更新游戏URL配置。

pages/index.vue

@@ -266,12 +266,10 @@ export default {
         return '准备中';
     },
     enterGame(item) {
-        let type = 'baccarat';
-        if (item.game_id == 2) type = 'longhu';
-        if (item.game_id == 4) type = 'nn';
-        if (item.game_id == 5) type = 'threecard';
-        
-        window.location.href = `${this.$baseApi.gameUrl}/?token=${this.userInfo.api_token}&language=${this.language}#/${type}`;
+        // 直接进入游戏桌，并标记来源为 portal
+        const portalUrl = window.location.origin + window.location.pathname;
+        const url = `${this.$baseApi.gameUrl}/?token=${this.userInfo.api_token}&language=${this.language}&from=portal&returnUrl=${encodeURIComponent(portalUrl)}#/play?id=${item.id}`;
+        window.location.href = url;
     }
   }
 };