diff --git a/.gitea/workflows/build-and-release.yaml b/.gitea/workflows/build-and-release.yaml
index 8449c08..79d87be 100644
--- a/.gitea/workflows/build-and-release.yaml
+++ b/.gitea/workflows/build-and-release.yaml
@@ -122,49 +122,49 @@ jobs:
           cp -r "dist/${{ env.APP_NAME }}"/* "${APPDIR}/usr/bin/"
 
           # Desktop entry
-          cat > "${APPDIR}/${{ env.APP_NAME }}.desktop" << DESKTOP_EOF
-          [Desktop Entry]
-          Name=Warlock Studio
-          Comment=AI-powered video upscaling, restoration and frame interpolation
-          Exec=Warlock-Studio
-          Icon=warlock-studio
-          Terminal=false
-          Type=Application
-          Categories=Graphics;Video;AudioVideo;
-          DESKTOP_EOF
+          printf '%s\n' \
+            '[Desktop Entry]' \
+            'Name=Warlock Studio' \
+            'Comment=AI-powered video upscaling, restoration and frame interpolation' \
+            'Exec=Warlock-Studio' \
+            'Icon=warlock-studio' \
+            'Terminal=false' \
+            'Type=Application' \
+            'Categories=Graphics;Video;AudioVideo;' \
+            > "${APPDIR}/${{ env.APP_NAME }}.desktop"
 
           # AppRun — entry point
-          cat > "${APPDIR}/AppRun" << 'APPRUN_EOF'
-          #!/bin/bash
-          HERE="$(dirname "$(readlink -f "$0")")"
-          export PATH="${HERE}/usr/bin:${PATH}"
-          export LD_LIBRARY_PATH="${HERE}/usr/bin/_internal:${LD_LIBRARY_PATH}"
-          exec "${HERE}/usr/bin/Warlock-Studio" "$@"
-          APPRUN_EOF
+          printf '%s\n' \
+            '#!/bin/bash' \
+            'HERE="$(dirname "$(readlink -f "$0")")"' \
+            'export PATH="${HERE}/usr/bin:${PATH}"' \
+            'export LD_LIBRARY_PATH="${HERE}/usr/bin/_internal:${LD_LIBRARY_PATH}"' \
+            'exec "${HERE}/usr/bin/Warlock-Studio" "$@"' \
+            > "${APPDIR}/AppRun"
           chmod +x "${APPDIR}/AppRun"
 
           # Icon: try to convert .ico, fallback to placeholder PNG
           if command -v python3 &>/dev/null; then
-            python3 << 'PYEOF'
-            import os, base64
-            apdir = os.environ.get('APPDIR', 'dist/Warlock-Studio.AppDir')
-            png_path = os.path.join(apdir, 'warlock-studio.png')
-            # Write a 48x48 transparent PNG as icon placeholder
-            with open(png_path, 'wb') as f:
-                f.write(base64.b64decode(
-                    'iVBORw0KGgoAAAANSUhEUgAAADAAAAAwCAYAAABXAvmHAAAACXBIWXMAAAsTAAALEwEAmpwYAAAB'
-                    'WElEQVRoQ+2YOw7CMBBEQ0WHaDgBByDhCBScgAMQdFScgJoj0HABQqJAwk0CQhL5s5KVj0rs'
-                    '2LFj165nRzL9f+cBAQICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICgoj8iMhJ'
-                    'AL4AZACYi0gSkQKAOwDc3H0AUJQdAHBXROSdSaYAQB3D1N0BoO6fA+DuTQA4m80uALABAGd3'
-                    'B4Cq+yf7o+sEAK7uDgBZ3QcAOAB0R5hPJpPl9/t9X5bldz6fdwCw2+2+6v5RluUDABaLxUvd'
-                    'P8uyvANARIRlWX4BwGaz+aymKYviiYhwdV+O4xjeK6WkqioCgLu7EEKIiMy6rrsCQFXViYik'
-                    'lHijASGEMKZq3meMRNM0KaV0mE6nJymlMwCklNLUhMPhoOu6LgBQKUUppTTFQMYYSimlqQbd'
-                    'b5RS4t2IiIgaY4wx8toYoymlNE1ozzljjAYAgKPRSNV9DgAiYowx3ogBACEEz+fzEwDyPM/b'
-                    'tj0BQNM0eZq238LD4A8ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBhgAJ3F'
-                    'Af+7OiaAAAAASUVORK5CYII='
-                ))
-                print(f'Icon written: {png_path}')
-            PYEOF
+            printf '%s\n' \
+              'import os, base64' \
+              'apdir = os.environ.get("APPDIR", "dist/Warlock-Studio.AppDir")' \
+              'png_path = os.path.join(apdir, "warlock-studio.png")' \
+              'with open(png_path, "wb") as f:' \
+              '    f.write(base64.b64decode(' \
+              "        'iVBORw0KGgoAAAANSUhEUgAAADAAAAAwCAYAAABXAvmHAAAACXBIWXMAAAsTAAALEwEAmpwYAAAB'" \
+              "        'WElEQVRoQ+2YOw7CMBBEQ0WHaDgBByDhCBScgAMQdFScgJoj0HABQqJAwk0CQhL5s5KVj0rs'" \
+              "        '2LFj165nRzL9f+cBAQICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICgoj8iMhJ'" \
+              "        'AL4AZACYi0gSkQKAOwDc3H0AUJQdAHBXROSdSaYAQB3D1N0BoO6fA+DuTQA4m80uALABAGd3'" \
+              "        'B4Cq+yf7o+sEAK7uDgBZ3QcAOAB0R5hPJpPl9/t9X5bldz6fdwCw2+2+6v5RluUDABaLxUvd'" \
+              "        'P8uyvANARIRlWX4BwGaz+aymKYviiYhwdV+O4xjeK6WkqioCgLu7EEKIiMy6rrsCQFXViYik'" \
+              "        'lHijASGEMKZq3meMRNM0KaV0mE6nJymlMwCklNLUhMPhoOu6LgBQKUUppTTFQMYYSimlqQbd'" \
+              "        'b5RS4t2IiIgaY4wx8toYoymlNE1ozzljjAYAgKPRSNV9DgAiYowx3ogBACEEz+fzEwDyPM/b'" \
+              "        'tj0BQNM0eZq238LD4A8ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBhgAJ3F'" \
+              "        'Af+7OiaAAAAASUVORK5CYII='" \
+              '))' \
+              "print(f'Icon written: {png_path}')" \
+              > /tmp/gen_icon.py
+            python3 /tmp/gen_icon.py
           fi
 
           # Download appimagetool