feat: add MSIX installer and migrate to .NET 10

.github/workflows/build.yml

@@ -14,16 +14,20 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Setup .NET 8
+      - name: Setup .NET 10
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: '8.0.x'
+          dotnet-version: '10.0.x'
 
       - name: Restore dependencies
-        run: dotnet restore WindowSeat.sln
+        run: |
+          dotnet restore src/WindowSeat.App/WindowSeat.App.csproj
+          dotnet restore src/WindowSeat.Tests/WindowSeat.Tests.csproj
 
       - name: Build (Release)
-        run: dotnet build WindowSeat.sln --configuration Release --no-restore
+        run: |
+          dotnet build src/WindowSeat.App/WindowSeat.App.csproj --configuration Release --no-restore
+          dotnet build src/WindowSeat.Tests/WindowSeat.Tests.csproj --configuration Release --no-restore
 
       - name: Run tests
         run: dotnet test src/WindowSeat.Tests/WindowSeat.Tests.csproj --configuration Release --no-build --verbosity normal --logger trx --results-directory TestResults

.github/workflows/release.yml

@@ -13,10 +13,13 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Setup .NET 8
+      - name: Setup .NET 10
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: '8.0.x'
+          dotnet-version: '10.0.x'
+
+      - name: Setup MSBuild
+        uses: microsoft/setup-msbuild@v2
 
       - name: Extract version from tag
         id: version
@@ -27,14 +30,14 @@ jobs:
           echo "VERSION=$version" >> $env:GITHUB_OUTPUT
 
       - name: Restore dependencies
-        run: dotnet restore WindowSeat.sln
+        run: |
+          dotnet restore src/WindowSeat.App/WindowSeat.App.csproj
+          dotnet restore src/WindowSeat.Tests/WindowSeat.Tests.csproj
 
       - name: Build (Release)
-        run: >
-          dotnet build WindowSeat.sln
-          --configuration Release
-          --no-restore
-          /p:Version=${{ steps.version.outputs.VERSION }}
+        run: |
+          dotnet build src/WindowSeat.App/WindowSeat.App.csproj --configuration Release --no-restore /p:Version=${{ steps.version.outputs.VERSION }}
+          dotnet build src/WindowSeat.Tests/WindowSeat.Tests.csproj --configuration Release --no-restore
 
       - name: Run tests
         run: >
@@ -52,16 +55,40 @@ jobs:
           --output publish/
           /p:Version=${{ steps.version.outputs.VERSION }}
 
-      # ── MSIX packaging ────────────────────────────────────────────────────
-      # TODO: Wire up Windows Application Packaging Project (wapproj) here
-      # once packaging/ scaffold is complete. For v1.0, zip the publish output
-      # as a stopgap so users can still download and run.
-
-      - name: Package (stopgap zip)
+      # ── ZIP (GitHub Releases sideload) ────────────────────────────────────
+      - name: Package zip
         shell: pwsh
         run: |
           Compress-Archive -Path publish/* -DestinationPath "WindowSeat-${{ steps.version.outputs.VERSION }}-win-x64.zip"
 
+      # ── MSIX (Microsoft Store submission) ─────────────────────────────────
+      - name: Patch manifest version
+        shell: pwsh
+        run: |
+          $v = "${{ steps.version.outputs.VERSION }}.0"
+          $path = "packaging/WindowSeat.Package/Package.appxmanifest"
+          (Get-Content $path -Raw) `
+            -replace '(?<=<Identity[^>]*Version=")[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+', $v |
+            Set-Content $path
+          Write-Host "Manifest version set to $v"
+
+      - name: Build MSIX package
+        shell: pwsh
+        run: |
+          msbuild packaging/WindowSeat.Package/WindowSeat.Package.wapproj `
+            /p:Configuration=Release `
+            /p:Platform=x64 `
+            /p:AppxPackageSigningEnabled=false `
+            /p:AppxAutoIncrementPackageRevision=false `
+            /p:GenerateTestArtifacts=false `
+            "/p:AppxPackageDir=${{ github.workspace }}\artifacts\msix\\"
+
+      - name: Upload MSIX (Store submission artifact)
+        uses: actions/upload-artifact@v4
+        with:
+          name: WindowSeat-${{ steps.version.outputs.VERSION }}-store-package
+          path: artifacts/msix/*.msix
+
       - name: Create GitHub Release
         uses: softprops/action-gh-release@v2
         with:

.gitignore

@@ -56,6 +56,9 @@ coverage/
 Thumbs.db
 Desktop.ini
 
+# Git worktrees
+.worktrees/
+
 # Secrets — never commit these
 *.pfx
 *.p12

README.md

@@ -59,7 +59,7 @@ For advanced configuration see [docs/power-user-guide.md](docs/power-user-guide.
 ## Building from Source
 
 **Prerequisites**
-- [.NET 8 SDK](https://dotnet.microsoft.com/download/dotnet/8.0)
+- [.NET 10 SDK](https://dotnet.microsoft.com/download/dotnet/10.0)
 - Visual Studio 2022 (17.8+) with the **Windows application development** workload, or VS Code with the C# Dev Kit extension
 
 **Clone and build**

WindowSeat.sln

@@ -10,6 +10,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WindowSeat.Settings", "src\
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WindowSeat.Tests", "src\WindowSeat.Tests\WindowSeat.Tests.csproj", "{A1B2C3D4-0004-0004-0004-000000000004}"
 EndProject
+Project("{C7167F0D-BC9F-4E6A-9F78-5F2B13F8E92E}") = "WindowSeat.Package", "packaging\WindowSeat.Package\WindowSeat.Package.wapproj", "{D1E2F3A4-0005-0005-0005-000000000005}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -32,5 +34,9 @@ Global
 		{A1B2C3D4-0004-0004-0004-000000000004}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{A1B2C3D4-0004-0004-0004-000000000004}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{A1B2C3D4-0004-0004-0004-000000000004}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D1E2F3A4-0005-0005-0005-000000000005}.Debug|Any CPU.ActiveCfg = Debug|x64
+		{D1E2F3A4-0005-0005-0005-000000000005}.Debug|Any CPU.Build.0 = Debug|x64
+		{D1E2F3A4-0005-0005-0005-000000000005}.Release|Any CPU.ActiveCfg = Release|x64
+		{D1E2F3A4-0005-0005-0005-000000000005}.Release|Any CPU.Build.0 = Release|x64
 	EndGlobalSection
 EndGlobal

docs/WindowSeat-Scope.md

@@ -4,7 +4,7 @@
 **Last Updated:** 2026-03-30  
 **License:** MIT  
 **Target Platform:** Windows 11 (primary), Windows 10 22H2+ (best effort)  
-**Stack:** .NET 8 LTS, C#, WPF, PowerShell (build/packaging tooling)
+**Stack:** .NET 10, C#, WPF, PowerShell (build/packaging tooling)
 
 ---
 

docs/contributing.md

@@ -6,7 +6,7 @@ Thank you for your interest in contributing. This document covers everything you
 
 ## Prerequisites
 
-- [.NET 8 SDK](https://dotnet.microsoft.com/download/dotnet/8.0)
+- [.NET 10 SDK](https://dotnet.microsoft.com/download/dotnet/10.0)
 - Visual Studio 2022 (17.8+) with the **Windows application development** workload  
   _or_ VS Code with the [C# Dev Kit](https://marketplace.visualstudio.com/items?itemName=ms-dotnettools.csdevkit) extension
 - Git