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/projects/minimalSourceBrowserify/browserify-run.js

@@ -0,0 +1,14 @@
+var browserify = require('browserify');
+var tsify = require('tsify');
+var uglifyify = require('uglifyify');
+var fs = require('fs');
+var replace = require('stream-replace');
+
+browserify()
+    .add('minimal.ts')
+    .plugin(tsify, { noImplicitAny: true })
+    .transform(uglifyify, { global: true  })
+    .bundle()
+    .on('error', function (error) { console.error(error.toString()); })
+    .pipe(replace(/\.\.\/\.\.\/srcTS\//g, '')) // cleanup
+    .pipe(fs.createWriteStream('minimal.js'));