chore: 更新静态资源文件并清理构建输出目录

删除旧的构建输出文件，包括图片资源和编译生成的JavaScript文件
添加新的图标资源文件到assets/img目录
更新package.json中的开发脚本配置

.output/server/node_modules/qs/lib/formats.js

@@ -1,23 +0,0 @@
-'use strict';
-
-var replace = String.prototype.replace;
-var percentTwenties = /%20/g;
-
-var Format = {
-    RFC1738: 'RFC1738',
-    RFC3986: 'RFC3986'
-};
-
-module.exports = {
-    'default': Format.RFC3986,
-    formatters: {
-        RFC1738: function (value) {
-            return replace.call(value, percentTwenties, '+');
-        },
-        RFC3986: function (value) {
-            return String(value);
-        }
-    },
-    RFC1738: Format.RFC1738,
-    RFC3986: Format.RFC3986
-};