Add version check

This runs `lmms --help` in the github CI. Further
checks, like importing an LMMS project to WAV via CLI, are conceivable.

.github/actions/extract-artifact/action.yml

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+name: Extract Artifact
+description: Waits for build, downloads and extracts the artifact
+inputs:
+  check-name:
+    description: "Check name to wait for"
+    required: true
+  artifact-name:
+    description: "Name of the artifact to download"
+    required: true
+  github-token:
+    description: "GitHub token for authentication"
+    required: true
+runs:
+  using: "composite"
+  steps:
+    - name: Wait for build
+      uses: lewagon/wait-on-check-action@v1.3.4
+      with:
+        ref: ${{ github.event.pull_request.head.sha || github.sha }}
+        check-name: ${{ inputs.check-name }}
+        repo-token: ${{ inputs.github-token }}
+        wait-interval: 30
+
+    - name: Download workflow artifact
+      uses: dawidd6/action-download-artifact@v6
+      with:
+        workflow: build.yml
+        name: ${{ inputs.artifact-name }}
+
+    - name: Extract artifact (Linux)
+      if: runner.os == 'Linux'
+      shell: bash
+      run: |
+        chmod +x lmms-*.AppImage
+        ./lmms-*.AppImage --appimage-extract
+
+    - name: Mount DMG (macOS)
+      if: runner.os == 'macOS'
+      shell: bash
+      run: |
+        hdiutil attach lmms-*.dmg -mountpoint ~/tmpvolume
+        cp -R ~/tmpvolume/LMMS.app /tmp/
+
+    # Windows: Not working because (1) #7732 and (2) the unzip failed
+    #- name: Unpack installer (Windows)
+    #  if: runner.os == 'Windows'
+    #  run: Start-Process @(gci build/lmms-*.exe)[0] -ArgumentList /S -Wait

.github/workflows/run-help.yml

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+---
+name: run-help
+'on': [push, pull_request]
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  help-linux:
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - arch: 'x86_64'
+            runner: 'ubuntu-latest'
+            suffix: ''
+          - arch: 'arm64'
+            runner: 'ubuntu-24.04-arm'
+            suffix: '-arm64'
+    name: help-linux-${{ matrix.config.arch }}
+    runs-on: ${{ matrix.config.runner }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Extract artifact
+        uses: ./.github/actions/extract-artifact
+        with:
+          check-name: linux-${{ matrix.config.arch }}
+          artifact-name: linux${{ matrix.config.suffix }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Display help
+        run: |
+          cd squashfs-root/
+          ./AppRun --help | grep "Usage: lmms"
+  help-macos:
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - arch: 'x86_64'
+            runner: 'macos-latest'
+          - arch: 'arm64'
+            runner: 'macos-latest'
+    name: help-macos-${{ matrix.config.arch }}
+    runs-on: ${{ matrix.config.runner }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Extract artifact
+        uses: ./.github/actions/extract-artifact
+        with:
+          check-name: macos-${{ matrix.config.arch }}
+          artifact-name: macos-${{ matrix.config.arch }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Display help
+        run: |
+          /tmp/LMMS.app/Contents/MacOS/lmms --help | grep "Usage: lmms"
+
+# Windows (does not work due to actions/extract-artifact issues)
+#     - name: Display help
+#       run: >
+#         $result = & "${env:ProgramFiles${{ matrix.config.programfiles-suffix }}}/LMMS/lmms.exe" "--help" |
+#         Select-String "Usage: lmms";
+#         if($result.Matches.Count -eq 0) { exit 1 }

.github/workflows/run-version.yml

@@ -0,0 +1,63 @@
+---
+name: run-version
+'on': [push, pull_request]
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  version-linux:
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - arch: 'x86_64'
+            runner: 'ubuntu-latest'
+            suffix: ''
+          - arch: 'arm64'
+            runner: 'ubuntu-24.04-arm'
+            suffix: '-arm64'
+    name: version-linux-${{ matrix.config.arch }}
+    runs-on: ${{ matrix.config.runner }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Extract artifact
+        uses: ./.github/actions/extract-artifact
+        with:
+          check-name: linux-${{ matrix.config.arch }}
+          artifact-name: linux${{ matrix.config.suffix }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Display version
+        run: |
+          cd squashfs-root/
+          ./AppRun --version | grep "Copyright (c) .* LMMS Developers"
+  version-macos:
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - arch: 'x86_64'
+            runner: 'macos-latest'
+          - arch: 'arm64'
+            runner: 'macos-latest'
+    name: version-macos-${{ matrix.config.arch }}
+    runs-on: ${{ matrix.config.runner }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Extract artifact
+        uses: ./.github/actions/extract-artifact
+        with:
+          check-name: macos-${{ matrix.config.arch }}
+          artifact-name: macos-${{ matrix.config.arch }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Display version
+        run: |
+          /tmp/LMMS.app/Contents/MacOS/lmms --version | grep "Usage: lmms"
+
+# Windows (does not work due to actions/extract-artifact issues)
+#     - name: Display version
+#       run: >
+#         $result = & "${env:ProgramFiles${{ matrix.config.programfiles-suffix }}}/LMMS/lmms.exe" "--version" |
+#         Select-String -Pattern "Copyright \(c\) .* LMMS Developers";
+#         if($result.Matches.Count -eq 0) { exit 1 }