Split GitHub build workflows

.github/workflows/build_assets.yml

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+name: BuildAssets
+
+on: workflow_call
+
+jobs:
+  buildAssets:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Python Setup
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          architecture: x64
+
+      - name: Install Packages (apt)
+        run: |
+          sudo apt update
+          sudo apt install qttools5-dev-tools latexmk texlive texlive-latex-extra
+
+      - name: Checkout Source
+        uses: actions/checkout@v4
+
+      - name: Install Packages (pip)
+        run: pip install -r docs/source/requirements.txt
+
+      - name: Build Assets
+        run: |
+          python pkgutils.py manual
+          python pkgutils.py sample
+          python pkgutils.py qtlrelease
+
+      - name: Upload Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: nw-assets
+          path: |
+            novelwriter/assets/manual.pdf
+            novelwriter/assets/sample.zip
+            novelwriter/assets/i18n/*.qm
+          if-no-files-found: error
+          retention-days: 14

.github/workflows/build_linux.yml

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+name: BuildLinux
+
+on: workflow_dispatch
+
+jobs:
+  buildAssets:
+    uses: ./.github/workflows/build_assets.yml
+
+  buildLinux:
+    needs: buildAssets
+    runs-on: ubuntu-latest
+    env:
+      PYTHON_VERSION: "3.12"
+      LINUX_TAG: "manylinux_2_28_x86_64"
+    steps:
+      - name: Python Setup
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+          architecture: x64
+
+      - name: Install Packages (pip)
+        run: pip install python-appimage
+
+      - name: Checkout Source
+        uses: actions/checkout@v4
+
+      - name: Download Artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: nw-assets
+          path: novelwriter/assets
+
+      - name: Build AppImage
+        run: python pkgutils.py build-appimage --linux-tag $LINUX_TAG --python-version $PYTHON_VERSION
+
+      - name: Upload Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: Linux-AppImage
+          path: dist_appimage
+          if-no-files-found: error
+          retention-days: 14

.github/workflows/build_mac.yml

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+name: BuildMacOS
+
+on: workflow_dispatch
+
+jobs:
+  buildAssets:
+    uses: ./.github/workflows/build_assets.yml
+
+  buildMac-AMD64:
+    needs: buildAssets
+    # Stay on macos-12 due to https://github.com/create-dmg/create-dmg/issues/143
+    runs-on: macos-12
+    env:
+      PYTHON_VERSION: "3.12"
+      PACKAGE_ARCH: x86_64
+      MINICONDA_ARCH: x86_64
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Download Artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: nw-assets
+          path: novelwriter/assets
+
+      - name: Build App Bundle
+        run: ./setup/macos/build.sh $PYTHON_VERSION $PACKAGE_ARCH $MINICONDA_ARCH
+
+      - name: Upload DMG
+        uses: actions/upload-artifact@v4
+        with:
+          name: MacOS-AMD64-DMG
+          path: dist_macos
+          if-no-files-found: error
+          retention-days: 14
+
+  buildMac-M1:
+    needs: buildAssets
+    runs-on: macos-14
+    env:
+      PYTHON_VERSION: "3.12"
+      PACKAGE_ARCH: aarch64
+      MINICONDA_ARCH: arm64
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Download Artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: nw-assets
+          path: novelwriter/assets
+
+      - name: Build App Bundle
+        run: ./setup/macos/build.sh $PYTHON_VERSION $PACKAGE_ARCH $MINICONDA_ARCH
+
+      - name: Upload DMG
+        uses: actions/upload-artifact@v4
+        with:
+          name: MacOS-M1-DMG
+          path: dist_macos
+          if-no-files-found: error
+          retention-days: 14