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/floorplannerTS/tsconfig.json

@@ -0,0 +1,15 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "module": "commonjs",
+    "removeComments": true,
+    "stripInternal": true,
+    "declaration": true,
+    "declarationDir": "./src/",
+    "strict": true
+  },
+ "include": [
+    "./src/**/*.ts"
+  ],
+  "exclude": [],
+}