Add multi-platform publishing support with single-file, self-contained deployment options

src/cs-mic-mcp/cs-mic-mcp.csproj

@@ -7,6 +7,34 @@
         <RootNamespace>cs_mic_mcp</RootNamespace>
     </PropertyGroup>
 
+    <PropertyGroup>
+        <RuntimeIdentifiers>
+            linux-x64;linux-arm64;win-x64;osx-x64;osx-arm64
+        </RuntimeIdentifiers>
+
+        <PublishSingleFile>true</PublishSingleFile>
+        <SelfContained>true</SelfContained>
+    </PropertyGroup>
+
+    <Target Name="PublishAll">
+        <MSBuild
+                Projects="$(MSBuildProjectFullPath)"
+                Targets="Publish"
+                BuildInParallel="true"
+                Properties="
+      Configuration=Release;
+      RuntimeIdentifier=%(ReleaseRid.Identity);
+      PublishDir=$(MSBuildProjectDirectory)/bin/Publish/%(ReleaseRid.Identity)/" />
+    </Target>
+
+    <ItemGroup>
+        <ReleaseRid Include="linux-x64" />
+        <ReleaseRid Include="linux-arm64" />
+        <ReleaseRid Include="win-x64" />
+        <ReleaseRid Include="osx-x64" />
+        <ReleaseRid Include="osx-arm64" />
+    </ItemGroup>
+
     <ItemGroup>
         <PackageReference Include="CapyKit" Version="1.0.4" />
         <PackageReference Include="CSMic" Version="2.1.0" />