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

public/GoJS-master/assets/css/api.css

@@ -0,0 +1,99 @@
+/* overrides main.css */
+p {
+  font-size: 100%;
+  line-height: normal;
+}
+
+pre {
+  white-space: pre-wrap;
+}
+
+.fineprint
+{
+  float: right;
+  margin-right: 2em;
+  font-size: .7em;
+}
+
+/* eg Group "Extends Node" */
+span.extends
+{
+  display: block;
+  margin-bottom: 1em;
+}
+
+.light {
+  color: #777;
+  font-style: italic;
+}
+
+.detailList dt {
+  font-weight: normal;
+}
+dt.heading {
+  font-weight: 700;
+}
+
+.since {
+  border-radius:4px 4px 4px 4px;
+  padding: 2px;
+  /*margin-left: 1em;*/
+  background: #DDD;
+  color: #444;
+}
+
+
+.seealso {
+  display: block; margin-left: 10px; margin-top: .5em;
+}
+ul.seealsolist { display: inline; list-style: none; margin: 0; padding: 0; }
+ul.seealsolist li { display: inline; }
+ul.seealsolist li:after { content: ","; }
+ul.seealsolist li:last-child:after { content: ""; }
+
+span.nodetails
+{
+  display:none;
+}
+
+.box, .boxrun, .boxread {
+  border: 1px solid #BBB;
+  padding: .6em;
+  background: #f4f4fa;
+}
+
+.morelink {
+  background: #E6E6F7;
+  padding: 2px;
+  border-radius: 5px;
+  margin: 5px;
+  cursor: pointer;
+}
+
+/* make table fit small screens */
+@media (max-width: 767px) {
+  td.attributes {
+    max-width: 140px;
+    overflow-wrap: break-word;
+    word-wrap: break-word;
+  }
+  td.name {
+    max-width: 120px;
+    overflow-wrap: break-word;
+    word-wrap: break-word;
+  }
+  td.description {
+
+  }
+}
+@media screen and (max-width: 767px) {
+.table-responsive>.table>tbody>tr>td,
+.table-responsive>.table>tbody>tr>th,
+.table-responsive>.table>tfoot>tr>td,
+.table-responsive>.table>tfoot>tr>th,
+.table-responsive>.table>thead>tr>td,
+.table-responsive>.table>thead>tr>th {
+    white-space: normal;
+}
+}
+