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/minimalSource/webpack.config.js

@@ -0,0 +1,31 @@
+const path = require('path');
+const ClosureCompilerPlugin = require('webpack-closure-compiler');
+
+module.exports = {
+  mode: 'production',
+  entry: path.resolve(__dirname, './minimal.ts'),
+  output: {
+    path: path.resolve(__dirname, './'),
+    library: 'minimal.js',
+    libraryTarget: 'umd',
+    filename: 'minimal.js'
+  },
+  resolve: {
+    extensions: ['.ts', '.tsx', '.js']
+  },
+  module: {
+    rules: [
+      // files with `.ts` or `.tsx` extension will be handled by `ts-loader`
+      { test: /\.tsx?$/, loader: 'ts-loader' }
+    ]
+  },
+  stats: 'errors-only',
+  plugins: [
+    new ClosureCompilerPlugin({
+      compiler: {
+        language_out: 'ECMASCRIPT5',
+        process_common_js_modules: true,
+      }
+    })
+  ]
+}