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

addons/btpanel/config.php

@@ -0,0 +1,58 @@
+<?php
+
+return [
+    [
+        'name' => 'key',
+        'title' => 'BT密钥',
+        'type' => 'string',
+        'value' => 'wnuIownhJtTCly6ttZOx3FjYkSQHtvs2',
+        'rule' => 'required',
+        'tip' => '请先在BT面板中开启API功能',
+        'extend' => '',
+    ],
+    [
+        'name' => 'url',
+        'title' => '访问地址',
+        'type' => 'string',
+        'value' => 'https://38.12.47.166:41235',
+        'rule' => 'required',
+        'tip' => '请填写BT面板地址,格式为"http://XXX.XXX.XXX.XXX:8888"',
+        'extend' => '',
+    ],
+    [
+        'type' => 'bool',
+        'name' => 'admin',
+        'title' => '仅限admin用户访问',
+        'value' => '0',
+        'content' => [
+            1 => '开启',
+            0 => '关闭',
+        ],
+        'tip' => '',
+        'rule' => '',
+        'extend' => '',
+    ],
+    [
+        'type' => 'bool',
+        'name' => 'linux',
+        'title' => '强制linux系统',
+        'value' => '1',
+        'content' => [
+            1 => '开启',
+            0 => '关闭',
+        ],
+        'tip' => '',
+        'rule' => '',
+        'extend' => '',
+    ],
+    [
+        'type' => 'number',
+        'name' => 'cycle',
+        'title' => '首页刷新周期',
+        'value' => '5000',
+        'content' => '',
+        'tip' => '毫秒',
+        'rule' => '',
+        'extend' => '',
+    ],
+];