重构：Wails v3 迁移 + 前端目录规范化 + Sidebar滚动优化

- web/ → frontend/ 目录重命名（Wails v3 标准结构）
- main.go: Middleware 修复 custom.js 404 + DevTools 延迟启动
- Sidebar: 收藏夹内部独立滚动 + 帮助区块固定底部
- useFavorites.ts: longPressTimer const→let 修复 TypeError
- App.vue: Arco Tabs padding-top 覆盖
- build: config.yml / Taskfile.yml 对齐官方模板，devtools build tag
- 新增 v3 bindings、vite.config.js、跨平台构建配置

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

build/windows/info.json

@@ -1,15 +1,15 @@
 {
 	"fixed": {
-		"file_version": "{{.Info.ProductVersion}}"
+		"file_version": "0.1.0"
 	},
 	"info": {
 		"0000": {
-			"ProductVersion": "{{.Info.ProductVersion}}",
-			"CompanyName": "{{.Info.CompanyName}}",
-			"FileDescription": "{{.Info.ProductName}}",
-			"LegalCopyright": "{{.Info.Copyright}}",
-			"ProductName": "{{.Info.ProductName}}",
-			"Comments": "{{.Info.Comments}}"
+			"ProductVersion": "0.1.0",
+			"CompanyName": "My Company",
+			"FileDescription": "A u-desk application",
+			"LegalCopyright": "© 2026, My Company",
+			"ProductName": "U-Desk",
+			"Comments": "This is a comment"
 		}
 	}
 }