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/assets/libs/jquery/README.md

@@ -0,0 +1,65 @@
+# jQuery
+
+> jQuery is a fast, small, and feature-rich JavaScript library.
+
+For information on how to get started and how to use jQuery, please see [jQuery's documentation](http://api.jquery.com/).
+For source files and issues, please visit the [jQuery repo](https://github.com/jquery/jquery).
+
+## Including jQuery
+
+Below are some of the most common ways to include jQuery.
+
+### Browser
+
+#### Script tag
+
+```html
+<script src="https://code.jquery.com/jquery-2.2.0.min.js"></script>
+```
+
+#### Babel
+
+[Babel](http://babeljs.io/) is a next generation JavaScript compiler. One of the features is the ability to use ES6/ES2015 modules now, even though browsers do not yet support this feature natively.
+
+```js
+import $ from "jquery";
+```
+
+#### Browserify/Webpack
+
+There are several ways to use [Browserify](http://browserify.org/) and [Webpack](https://webpack.github.io/). For more information on using these tools, please refer to the corresponding project's documention. In the script, including jQuery will usually look like this...
+
+```js
+var $ = require("jquery");
+```
+
+#### AMD (Asynchronous Module Definition)
+
+AMD is a module format built for the browser. For more information, we recommend [require.js' documentation](http://requirejs.org/docs/whyamd.html).
+
+```js
+define(["jquery"], function($) {
+
+});
+```
+
+### Node
+
+To include jQuery in [Node](nodejs.org), first install with npm.
+
+```sh
+npm install jquery
+```
+
+For jQuery to work in Node, a window with a document is required. Since no such window exists natively in Node, one can be mocked by tools such as [jsdom](https://github.com/tmpvar/jsdom). This can be useful for testing purposes.
+
+```js
+require("jsdom").env("", function(err, window) {
+	if (err) {
+		console.error(err);
+		return;
+	}
+
+	var $ = require("jquery")(window);
+});
+```