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/admin/view/btpanel/logs/index.html

@@ -0,0 +1,90 @@
+<style>
+    .label {
+        cursor: pointer;
+    }
+    .page span,
+    .page a {
+        display: inline-block;
+        height: 28px;
+        line-height: 28px;
+        padding: 0 10px;
+        font-family: "Arial";
+        font-size: 13px;
+        color: #666;
+        float: left;
+        border: 1px solid #ececec;
+        border-right: none;
+    }
+
+    .page a.prev {
+        border-left: #ddd solid 1px
+    }
+
+    .page a:hover {
+        background: #e8e8e8;
+        color: #20a53a;
+        text-shadow: 0 1px 0 #fff;
+        cursor: pointer
+    }
+
+    .page spanold {
+        font-size: 12px;
+        padding: 4px 10px !important;
+        border-style: solid;
+        border-width: 1px;
+        border-color: #ddd #ddd #ccc;
+        border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
+        display: inline-block;
+        line-height: 16px;
+        background: #f5f5f5;
+        color: #333;
+        text-shadow: 0 1px 0 #fff
+    }
+
+    .page .Pcurrent {
+        color: #fff;
+        background: #20a53a;
+        cursor: default;
+        border-color: #20a53a;
+    }
+
+    .page .Pcount {
+        color: #333;
+        padding: 0 10px;
+        margin-right: 0px;
+        border-right: 1px solid #ececec;
+    }
+</style>
+<div class="panel panel-solid">
+    <div class="panel-heading">面板操作日志
+        <div class="pull-right">
+            <span class="label label-default label-run-logs">面板运行日志</span>
+        </div>
+    </div>
+    <div class="panel-body">
+        <table class="table table-striped table-bordered">
+            <thead>
+                <tr>
+                    <th>编号</th>
+                    <th>用户</th>
+                    <th>操作类型</th>
+                    <th>详情</th>
+                    <th>操作时间</th>
+                </tr>
+            </thead>
+            <tbody id="table-logs"></tbody>
+        </table>
+        <div class="page" id="table-page" data-events="navPages"></div>
+    </div>
+</div>
+<script type="text/html" id="logstpl">
+    <% for(var i=0; i<data.length; i++){ %>
+        <tr>
+            <td><%=data[i].id%></td>
+            <td><%=data[i].username%></td>
+            <td><%=data[i].type%></td>
+            <td><%=data[i].log%></td>
+            <td><%=data[i].addtime%></td>
+        </tr>
+    <% } %>
+</script>