chore: initial commit

- Wails v2 + Go 1.21+ + Vue 3 dark UI
- 3 buttons: Check env (auto-install dsh) / Start dsh web / Stop
- 升级 / 检查版本 一键按钮
- 启动后窗口自动最小化到 Dock
- 顶部 logo 鼠标 hover 显示大图预览
- scripts/: build-mac.sh, build-windows.bat, install-app.sh
- ui-design/: 视觉设计稿 (HTML + tokens)

frontend/wailsjs/go/main/App.d.ts

@@ -0,0 +1,21 @@
+// Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL
+// This file is automatically generated. DO NOT EDIT
+import {main} from '../models';
+
+export function CheckEnv():Promise<main.CheckResult>;
+
+export function CheckUpdate():Promise<main.UpdateInfo>;
+
+export function GetStatus():Promise<main.StatusResult>;
+
+export function HideWindow():Promise<void>;
+
+export function InstallDsh():Promise<main.InstallResult>;
+
+export function ShowWindow():Promise<void>;
+
+export function Start():Promise<main.StartResult>;
+
+export function Stop():Promise<main.StartResult>;
+
+export function UpdateDsh():Promise<main.InstallResult>;