feat: 后端全量更新 - 含所有本次需求

- Contract.php: 返回合约账户余额(balance_contract)
- My.php: 地址管理增加BTC/ETH
- AppContract.php: 一键平仓(closeall)
- AppProxy.php: 代理专属注册链接 + 分级权限(L1/L2)
- site.php: 手续费减半(0.018→0.009)
- agent_permission_setup.sql: 代理权限SQL
- crypto_news_crawler.py: 新闻自动采集脚本

application/kefu/controller/Stextgateway.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace app\kefu\controller;
+
+use GatewayWorker\Gateway;
+use Workerman\Autoloader;
+use Workerman\Worker;
+
+// 自动加载类
+require_once __DIR__ . '/../../../addons/kefu/library/GatewayWorker/vendor/autoload.php';
+
+/**
+ * Win下启动 text_gateway服务 专用类
+ */
+class Stextgateway
+{
+
+    function __construct()
+    {
+        Autoloader::setRootPath(__DIR__);
+
+        $kefu_config = get_addon_config('kefu');
+
+        $internal_gateway                  = new Gateway("Text://127.0.0.1:" . ($kefu_config['register_port'] + 100));
+        $internal_gateway->name            = 'KeFuGateway';
+        $internal_gateway->startPort       = $kefu_config['internal_start_port'] + 1000;
+        $internal_gateway->registerAddress = '127.0.0.1:' . $kefu_config['register_port'];// 端口为start_register.php中监听的端口
+
+        // 如果不是在根目录启动，则运行runAll方法
+        if (!defined('GLOBAL_START')) {
+            Worker::runAll();
+        }
+    }
+}