Fix script configuration format in GitLab CI jobs

Consolidated mixed script formats in upload-packages and package-linux jobs
into single multiline script blocks. GitLab CI requires script sections to be
either:
1. A single multiline string, OR
2. An array of strings (each starting with -)

Mixed formats (individual commands + multiline blocks) are not supported.

Fixed jobs:
- upload-packages: Consolidated all script commands into single multiline block
- package-linux: Consolidated all script commands into single multiline block

.gitlab-ci.yml

@@ -386,11 +386,11 @@ package-linux:
     # Install AppImage tools
     - pacman -S --noconfirm wget
   script:
-    - mkdir -p packages
-    - cd packages
-    
-    # Create AppImages for each build
     - |
+      mkdir -p packages
+      cd packages
+      
+      # Create AppImages for each build
       for build_type in "generic" "steamdeck" "compat"; do
         echo "Creating AppImage for ${build_type}..."
         
@@ -419,17 +419,16 @@ package-linux:
           echo "Build directory $BUILD_DIR not found, skipping..."
         fi
       done
-    
-    # Create source archive
-    - cd ..
-    - git archive --format=tar.gz --prefix=citron-${VERSION_NAME}/ -o packages/citron-${VERSION_NAME}-source.tar.gz HEAD
-    
-    # Create checksums
-    - cd packages
-    - sha256sum *.AppImage *.tar.gz > checksums.txt
-    
-    # Create package info
-    - |
+      
+      # Create source archive
+      cd ..
+      git archive --format=tar.gz --prefix=citron-${VERSION_NAME}/ -o packages/citron-${VERSION_NAME}-source.tar.gz HEAD
+      
+      # Create checksums
+      cd packages
+      sha256sum *.AppImage *.tar.gz > checksums.txt
+      
+      # Create package info
       cat > package-info.json << EOF
       {
         "version": "${VERSION_NAME}",
@@ -448,9 +447,9 @@ package-linux:
         }
       }
       EOF
-    
-    - echo "Packages created:"
-    - ls -la *.AppImage *.tar.gz *.txt *.json
+      
+      echo "Packages created:"
+      ls -la *.AppImage *.tar.gz *.txt *.json
   artifacts:
     paths:
       - packages/
@@ -530,9 +529,8 @@ upload-packages:
           exit 1
         fi
       }
-    
-    # Upload Linux packages
-    - |
+      
+      # Upload Linux packages
       if [ -d "packages" ]; then
         cd packages
         for file in *.AppImage *.tar.gz *.txt *.json; do
@@ -541,9 +539,8 @@ upload-packages:
           fi
         done
       fi
-    
-    # Upload Android packages
-    - |
+      
+      # Upload Android packages
       if [ -d "packages" ] && [ -f "packages/*.apk" ]; then
         cd packages
         for file in *.apk; do
@@ -552,9 +549,9 @@ upload-packages:
           fi
         done
       fi
-    
-    - echo "🎉 All packages uploaded successfully!"
-    - echo "📋 Package Registry URL: ${PACKAGE_REGISTRY_URL}/${PACKAGE_DIR}/"
+      
+      echo "🎉 All packages uploaded successfully!"
+      echo "📋 Package Registry URL: ${PACKAGE_REGISTRY_URL}/${PACKAGE_DIR}/"
   only:
     - main
     - master