refactor: Configure single NuGet package for CLI tool

Adjust NuGet publishing to create a single package (roslyn-diff) that
bundles all assemblies. Core and Output projects are no longer packaged
separately as they are automatically included via project references.

Changes:
- Set PackageId to 'roslyn-diff' in CLI project
- Mark Core and Output projects as IsPackable=false
- Update publish workflow to pack only CLI project
- Remove unnecessary NuGet metadata from library projects

Users can now install via: dotnet tool install roslyn-diff

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: randlee

.github/workflows/publish.yml

@@ -35,7 +35,7 @@ jobs:
         run: dotnet test -c Release --no-build
 
       - name: Pack
-        run: dotnet pack -c Release --no-build -p:Version=${{ steps.version.outputs.VERSION }} -o ./packages
+        run: dotnet pack src/RoslynDiff.Cli/RoslynDiff.Cli.csproj -c Release --no-build -p:Version=${{ steps.version.outputs.VERSION }} -o ./packages
 
       - name: Publish to GitHub Packages
         run: dotnet nuget push ./packages/*.nupkg --source "https://nuget.pkg.github.com/randlee/index.json" --api-key ${{ secrets.GITHUB_TOKEN }} --skip-duplicate

src/RoslynDiff.Cli/RoslynDiff.Cli.csproj

@@ -7,9 +7,9 @@
 
   <!-- NuGet Package Metadata (common properties inherited from Directory.Build.props) -->
   <PropertyGroup>
-    <PackageId>RoslynDiff</PackageId>
-    <Description>A semantic diff tool for .NET source code using Roslyn. Unlike traditional line-by-line diff tools, roslyn-diff understands code structure, detecting and reporting changes at the semantic level (classes, methods, properties, etc.).</Description>
-    <PackageTags>roslyn;diff;semantic-diff;code-analysis;csharp;vb;dotnet;cli;tool</PackageTags>
+    <PackageId>roslyn-diff</PackageId>
+    <Description>Roslyn-based semantic diff tool for C# and VB.NET code comparison</Description>
+    <PackageTags>diff;roslyn;csharp;vbnet;code-comparison;cli</PackageTags>
     <PackageReadmeFile>README.md</PackageReadmeFile>
     <PackageIcon>icon.png</PackageIcon>
     <PackageReleaseNotes>Initial release of roslyn-diff with semantic diff capabilities for C# and VB.NET files.</PackageReleaseNotes>

src/RoslynDiff.Core/RoslynDiff.Core.csproj

@@ -1,10 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
+  <!-- This project is NOT packaged separately - it's bundled into the CLI tool package -->
   <PropertyGroup>
-    <PackageId>RoslynDiff.Core</PackageId>
-    <Description>Core library for Roslyn-based semantic code diffing. Provides semantic diff capabilities for C# and VB.NET source code.</Description>
-    <PackageTags>diff;roslyn;csharp;vbnet;code-comparison;semantic-diff</PackageTags>
-    <PackageReadmeFile>README.md</PackageReadmeFile>
+    <IsPackable>false</IsPackable>
   </PropertyGroup>
 
   <ItemGroup>
@@ -15,9 +13,4 @@
     <PackageReference Include="DiffPlex" Version="1.7.2" />
   </ItemGroup>
 
-  <!-- Include README in Package -->
-  <ItemGroup>
-    <None Include="..\..\README.md" Pack="true" PackagePath="\" />
-  </ItemGroup>
-
 </Project>

src/RoslynDiff.Output/RoslynDiff.Output.csproj

@@ -1,10 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
+  <!-- This project is NOT packaged separately - it's bundled into the CLI tool package -->
   <PropertyGroup>
-    <PackageId>RoslynDiff.Output</PackageId>
-    <Description>Output formatters and renderers for RoslynDiff results. Supports JSON, HTML, text, and terminal output formats.</Description>
-    <PackageTags>diff;roslyn;csharp;vbnet;code-comparison;output-formatter</PackageTags>
-    <PackageReadmeFile>README.md</PackageReadmeFile>
+    <IsPackable>false</IsPackable>
   </PropertyGroup>
 
   <ItemGroup>
@@ -15,11 +13,6 @@
     <PackageReference Include="Spectre.Console" Version="0.49.1" />
   </ItemGroup>
 
-  <!-- Include README in Package -->
-  <ItemGroup>
-    <None Include="..\..\README.md" Pack="true" PackagePath="\" />
-  </ItemGroup>
-
   <!-- System.Text.Json is included in .NET 10.0 runtime -->
 
 </Project>