feat: 接入托盘 / 添加图标生成工具 / 重命名并完善前端

- 托盘：用 getlantern/systray 重写 internal/tray，支持显示/隐藏窗口与退出
- 图标：新增 pkg/icongen 工具，支持 png/jpg/gif/bmp/webp，输出 ico/png 多个尺寸
- 重命名：项目默认名改为「青梧映星」，wails.json/productname/companyname/copyright 同步更新
- 顶栏：新增顶部导航栏（主题切换、设置、用户），iconfont 自托管 fa-solid-900.woff2
- 主题：CSS 变量 + html[data-theme] 控制白昼/黑夜切换，同时调用 WindowSetDarkTheme/LightTheme
- 底部：版权栏包含工作室、开发者与点击跳转客服链接
- 打包：wails build + exe 版本更新至 1.20 MB

go.mod

@@ -3,14 +3,22 @@ module go_win_template
 go 1.25.0
 
 require (
+	github.com/getlantern/systray v1.2.2
 	github.com/wailsapp/wails/v2 v2.16.0
-	golang.org/x/sys v0.46.0
+	golang.org/x/image v0.41.0
 )
 
 require (
 	git.sr.ht/~jackmordaunt/go-toast/v2 v2.0.3 // indirect
 	github.com/bep/debounce v1.2.1 // indirect
+	github.com/getlantern/context v0.0.0-20190109183933-c447772a6520 // indirect
+	github.com/getlantern/errors v0.0.0-20190325191628-abdb3e3e36f7 // indirect
+	github.com/getlantern/golog v0.0.0-20190830074920-4ef2e798c2d7 // indirect
+	github.com/getlantern/hex v0.0.0-20190417191902-c6586a6fe0b7 // indirect
+	github.com/getlantern/hidden v0.0.0-20190325191715-f02dbb02be55 // indirect
+	github.com/getlantern/ops v0.0.0-20190325191751-d70cb0d6f85f // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
+	github.com/go-stack/stack v1.8.0 // indirect
 	github.com/godbus/dbus/v5 v5.1.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/gorilla/websocket v1.5.3 // indirect
@@ -23,6 +31,7 @@ require (
 	github.com/leaanthony/u v1.1.1 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/oxtoacart/bpool v0.0.0-20190530202638-03653db5a59c // indirect
 	github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
@@ -34,6 +43,7 @@ require (
 	github.com/wailsapp/mimetype v1.4.1 // indirect
 	golang.org/x/crypto v0.53.0 // indirect
 	golang.org/x/net v0.56.0 // indirect
+	golang.org/x/sys v0.46.0 // indirect
 	golang.org/x/text v0.39.0 // indirect
 )