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

thinkphp/library/think/config/driver/Ini.php

@@ -0,0 +1,24 @@
+<?php
+// +----------------------------------------------------------------------
+// | ThinkPHP [ WE CAN DO IT JUST THINK ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
+// +----------------------------------------------------------------------
+// | Author: liu21st <liu21st@gmail.com>
+// +----------------------------------------------------------------------
+
+namespace think\config\driver;
+
+class Ini
+{
+    public function parse($config)
+    {
+        if (is_file($config)) {
+            return parse_ini_file($config, true);
+        } else {
+            return parse_ini_string($config, true);
+        }
+    }
+}

thinkphp/library/think/config/driver/Json.php

@@ -0,0 +1,24 @@
+<?php
+// +----------------------------------------------------------------------
+// | ThinkPHP [ WE CAN DO IT JUST THINK ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
+// +----------------------------------------------------------------------
+// | Author: liu21st <liu21st@gmail.com>
+// +----------------------------------------------------------------------
+
+namespace think\config\driver;
+
+class Json
+{
+    public function parse($config)
+    {
+        if (is_file($config)) {
+            $config = file_get_contents($config);
+        }
+        $result = json_decode($config, true);
+        return $result;
+    }
+}

thinkphp/library/think/config/driver/Xml.php

@@ -0,0 +1,31 @@
+<?php
+// +----------------------------------------------------------------------
+// | ThinkPHP [ WE CAN DO IT JUST THINK ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
+// +----------------------------------------------------------------------
+// | Author: liu21st <liu21st@gmail.com>
+// +----------------------------------------------------------------------
+
+namespace think\config\driver;
+
+class Xml
+{
+    public function parse($config)
+    {
+        if (is_file($config)) {
+            $content = simplexml_load_file($config);
+        } else {
+            $content = simplexml_load_string($config);
+        }
+        $result = (array) $content;
+        foreach ($result as $key => $val) {
+            if (is_object($val)) {
+                $result[$key] = (array) $val;
+            }
+        }
+        return $result;
+    }
+}