chore(build): migrate from SLN to SLNX format (#43)

- Create new SLNX solution file in src directory
- Remove legacy SLN file from root
- Update CI workflow to use new solution path
- Update CLAUDE.md build commands

Author: CalvinAllen

.github/workflows/release_build_and_deploy.yml

@@ -27,7 +27,7 @@ jobs:
         extension-source-file: 'src/CodingWithCalvin.GitRanger/source.extension.cs'
 
     - name: 2. Restoring Packages
-      run: nuget restore CodingWithCalvin.GitRanger.sln
+      run: nuget restore src/CodingWithCalvin.GitRanger.slnx
 
     - name: 3. Building Project
       run: msbuild 'src/CodingWithCalvin.GitRanger/CodingWithCalvin.GitRanger.csproj' /p:configuration='Release' /p:DeployExtension=False

CLAUDE.md

@@ -82,7 +82,7 @@ Git Ranger is a Visual Studio 2022/2026 extension for Git management, bringing G
 
 ```bash
 # Restore NuGet packages
-nuget restore CodingWithCalvin.GitRanger.sln
+nuget restore src/CodingWithCalvin.GitRanger.slnx
 
 # Build (Release)
 msbuild src/CodingWithCalvin.GitRanger/CodingWithCalvin.GitRanger.csproj /p:configuration=Release /p:DeployExtension=False

CodingWithCalvin.GitRanger.sln

@@ -0,0 +1,20 @@
+<Solution>
+  <Configurations>
+    <Configuration Name="Debug" />
+    <Configuration Name="Release" />
+    <Platform Name="AnyCPU" />
+  </Configurations>
+  <Folder Name="/Solution Items/">
+    <File Path="../.github/workflows/publish.yml" />
+    <File Path="../.github/workflows/release_build_and_deploy.yml" />
+    <File Path="../README.md" />
+    <File Path="../resources/extension.manifest.json" />
+  </Folder>
+  <Folder Name="/src/">
+    <Project Path="CodingWithCalvin.GitRanger/CodingWithCalvin.GitRanger.csproj" />
+    <Project Path="CodingWithCalvin.GitRanger.Core/CodingWithCalvin.GitRanger.Core.csproj" />
+  </Folder>
+  <Folder Name="/tests/">
+    <Project Path="../tests/CodingWithCalvin.GitRanger.Core.Tests/CodingWithCalvin.GitRanger.Core.Tests.csproj" />
+  </Folder>
+</Solution>