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/adminer/package.json

@@ -0,0 +1,32 @@
+{
+	"id":"adminer",
+	"name":"Adminer",
+	"title":"{{LNG.Adminer.meta.title}}",
+	"version":"4.77",
+	"source":{
+		"thumb":"",
+		"className":"font-icon icon-bar-chart bg-blue-7",
+		"screenshoot":["{{pluginHost}}static/screenshot.png"]
+	},
+	"category":"tools",
+	"description":"{{LNG.Adminer.meta.desc}}",
+	"keywords":"",
+	"auther":{
+		"copyright":"adminer.org",
+		"homePage":"https://www.adminer.org"
+	},
+	"configItem":{
+		"pluginAuth":{
+			"type":"userSelect",
+			"value":"role:1",
+			"display":"{{LNG.Plugin.config.auth}}",
+			"desc":"{{LNG.Plugin.config.authDesc}}",
+			"require":1
+		},
+		"menuSubMenu":{
+			"type":"switch",
+			"value":1,
+			"display":"{{LNG.menu_sub_menu}}"
+		}
+	}
+}