refactor: 重构移动端页面布局与资源路径，优化打包配置

1. 新增layout.uts统一管理页面尺寸与安全区计算
2. 修正图片资源路径到static/mobile目录
3. 调整App.vue与AppIcon组件样式适配多端
4. 为微信小程序配置打包忽略规则减少包体积
5. 修复API请求错误抛出类型，完善类型定义
6. 补充README文档说明项目运行与维护规范
7. 优化多个页面的样式与生命周期逻辑

services/layout.uts

@@ -0,0 +1,39 @@
+import { ref, onMounted, onUnmounted } from 'vue'
+import { onResize } from '@dcloudio/uni-app'
+
+export type PageLayout = {
+	pageStyle: () => string,
+	contentStyle: (offset: number, minimum: boolean) => string,
+	statusStyle: (offset: number) => string,
+	bottomStyle: (padding: number) => string
+}
+
+// 原生渲染不支持 vh/calc，统一以窗口尺寸计算，并随旋转更新。
+export function usePageLayout(): PageLayout {
+	const windowInfo = ref(uni.getWindowInfo())
+	const refresh = () => { windowInfo.value = uni.getWindowInfo() }
+	onMounted(() => refresh())
+	// #ifdef APP
+	onResize((_options) => { refresh() })
+	// #endif
+	// #ifndef APP
+	const handleResize = (_options: OnWindowResizeCallbackResult) => { refresh() }
+	uni.onWindowResize(handleResize)
+	onUnmounted(() => { uni.offWindowResize(handleResize) })
+	// #endif
+	const rpx = (value: number): number => value * windowInfo.value.windowWidth / 750
+	const status = (): number => windowInfo.value.statusBarHeight ?? 0
+	const pageStyle = (): string => 'min-height:' + windowInfo.value.windowHeight + 'px;'
+	const contentStyle = (offset: number, minimum: boolean): string => {
+		// #ifdef WEB
+		return (minimum ? 'min-height:' : 'height:') + 'calc(100vh - ' + status() + 'px - ' + offset + 'rpx);'
+		// #endif
+		// #ifndef WEB
+		const height = Math.max(0, windowInfo.value.windowHeight - status() - rpx(offset))
+		return (minimum ? 'min-height:' : 'height:') + height + 'px;'
+		// #endif
+	}
+	const statusStyle = (offset: number): string => 'height:' + (status() + rpx(offset)) + 'px;'
+	const bottomStyle = (padding: number): string => 'padding-bottom:' + (rpx(padding) + (windowInfo.value.safeAreaInsets?.bottom ?? 0)) + 'px;'
+	return { pageStyle, contentStyle, statusStyle, bottomStyle }
+}