ci: add manual dispatch to release workflow and create automated MSIX test build workflow

Author: BeetleBot

.github/workflows/release-windows-msix.yml

@@ -1,6 +1,7 @@
 name: Windows MSIX
 
 on:
+  workflow_dispatch:
   push:
     tags:
       - 'v*'

.github/workflows/test-msix.yml

@@ -0,0 +1,82 @@
+name: Test MSIX Build
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+    paths:
+      - 'packaging/msix/**'
+      - '.github/workflows/test-msix.yml'
+      - 'Cargo.toml'
+      - 'src/**'
+
+jobs:
+  test-build:
+    name: Test MSIX Packaging
+    runs-on: windows-latest
+    env:
+      RUSTFLAGS: -C target-feature=+crt-static
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Build
+        run: cargo build --release
+
+      - name: Extract version
+        id: version
+        shell: pwsh
+        run: |
+          $ver = (Select-String -Path "Cargo.toml" -Pattern '^version = "([^"]+)"').Matches.Groups[1].Value
+          echo "SEMVER=$ver" >> $env:GITHUB_OUTPUT
+          echo "MSIX_VER=$ver.0" >> $env:GITHUB_OUTPUT
+
+      - name: Stamp version into manifest
+        shell: pwsh
+        run: |
+          $manifest = Get-Content packaging/msix/AppxManifest.xml -Raw
+          $manifest = $manifest -replace 'Version="[^"]*"', "Version=`"${{ steps.version.outputs.MSIX_VER }}`""
+          Set-Content packaging/msix/AppxManifest.xml $manifest
+
+      - name: Prepare package layout
+        shell: pwsh
+        run: |
+          $layout = "target/msix/layout"
+          New-Item -ItemType Directory -Path "$layout/Assets" -Force | Out-Null
+
+          Copy-Item target/release/fount.exe $layout/
+          Copy-Item packaging/msix/AppxManifest.xml $layout/
+
+          $sizes = @{
+            "StoreLogo" = "50x50"
+            "Square44x44Logo" = "44x44"
+            "Square150x150Logo" = "150x150"
+            "Wide310x150Logo" = "310x150"
+            "LargeSquareLogo" = "310x310"
+          }
+
+          foreach ($entry in $sizes.GetEnumerator()) {
+            magick assets/icons/FountTUI_Logo.png `
+              -resize $entry.Value `
+              -gravity center `
+              -background "#1a1b26" `
+              -extent $entry.Value `
+              "$layout/Assets/$($entry.Key).png"
+          }
+
+      - name: Create MSIX
+        shell: pwsh
+        run: |
+          $sdkDir = Get-ChildItem "C:\Program Files (x86)\Windows Kits\10\bin\10.*" -Directory | Sort-Object Name -Descending | Select-Object -First 1
+          $makeappx = Join-Path $sdkDir.FullName "x64\MakeAppx.exe"
+          & $makeappx pack /d target/msix/layout /p target/msix/FountTUI-TEST-BUILD.msix /o
+
+      - name: Upload Artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: FountTUI-Test-MSIX
+          path: target/msix/FountTUI-TEST-BUILD.msix
+          retention-days: 5