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/learn/kod/plugins/webodf/static/main.js

@@ -0,0 +1,20 @@
+kodReady.push(function(){
+	if( !$.supportCanvas() ){
+		return;
+	}
+	kodApp.add({
+		name:"webodfView",
+		title:"Opendocument Viewer",
+		ext:"{{config.fileExt}}",
+		sort:"{{config.fileSort}}",
+		icon:'x-item-file x-odt',
+		callback:function(path,ext){
+			var url = '{{pluginApi}}&path='+core.pathCommon(path)+'#locale='+G.lang;
+			if('window' == "{{config.openWith}}"  && !core.isFileView() ){
+				window.open(url);
+			}else{
+				core.openDialog(url,core.icon(ext),htmlEncode(core.pathThis(path)));
+			}
+		}
+	});
+});