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

components/AppIcon.uvue

@@ -5,10 +5,16 @@
 <script setup lang="uts">
 	const props = defineProps({ name: { type: String, default: 'sparkles' }, size: { type: Number, default: 42 }, muted: { type: Boolean, default: false } })
 	const isVector = computed(() => props.name == 'chevron-right' || props.name == 'arrow-right')
-	const iconSrc = computed(() => isVector.value ? '/static/icons/' + (props.name == 'chevron-right' ? 'chevron-circle' : 'arrow-right') + '.svg' : '/static/icons-generated/' + props.name + '.png')
+	const iconSrc = computed(() => isVector.value ? '/static/icons/' + (props.name == 'chevron-right' ? 'chevron-circle' : 'arrow-right') + '.svg' : '/static/mobile/icons-generated/' + props.name + '.png')
 	const iconStyle = computed(() => 'width:' + props.size + 'rpx;height:' + props.size + 'rpx;')
 </script>
 
 <style>
-	.app-icon { display: block; flex-shrink: 0; transform: scale(1.2); }.vector-icon { transform: none; }.muted-icon { opacity: .48; }
+	.app-icon {
+/* #ifndef APP */
+display: block;
+/* #endif */
+ flex-shrink: 0; transform: scale(1.2); }
+	.vector-icon { transform: none; }
+	.muted-icon { opacity: .48; }
 </style>