feat: Avalonia 常驻通知应用（保活 + 弹窗 + 跨桌面）

- 常驻 Host：无主窗口保活 + 系统托盘菜单
- Toast 弹窗：堆叠 / 自动消失 / 悬停暂停 / 淡入淡出 / 点击关闭
- Sticky 常驻弹窗与 InputMode 边框配色
- 跨虚拟桌面显示（源生成 COM PinView，AOT 友好）
- 设置窗口（Semi + Ursa）+ JSON 源生成持久化
- AOT 准备：IsAotCompatible 0 警告

Notify/Notify.csproj

@@ -0,0 +1,32 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net10.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <LangVersion>latest</LangVersion>
+    <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
+    <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
+    <ApplicationIcon>Assets\claude.ico</ApplicationIcon>
+    <RootNamespace>Notify</RootNamespace>
+    <AssemblyName>notify</AssemblyName>
+    <IsAotCompatible>true</IsAotCompatible>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <AvaloniaResource Include="Assets\**" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Avalonia" Version="12.0.4" />
+    <PackageReference Include="Avalonia.Desktop" Version="12.0.4" />
+    <PackageReference Include="Avalonia.Fonts.Inter" Version="12.0.4" />
+    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.2" />
+    <PackageReference Include="Semi.Avalonia" Version="12.0.3" />
+    <PackageReference Include="Irihi.Ursa" Version="2.0.1" />
+    <PackageReference Include="Irihi.Ursa.Themes.Semi" Version="2.0.1" />
+  </ItemGroup>
+
+</Project>