fix: Fail fast and use correct directory when combining coverage files

Author: m1so

.github/workflows/ci.yml

@@ -381,6 +381,7 @@ jobs:
           path: .coverage
           retention-days: 1
           include-hidden-files: true
+          if-no-files-found: error
 
   coverage-combine:
     name: Combine and Upload Coverage
@@ -429,20 +430,15 @@ jobs:
           mkdir -p coverage-data
           i=0
           for file in "${coverage_files[@]}"; do
-            echo "Copying $file to coverage-data/.coverage.$i"
             cp "$file" "coverage-data/.coverage.$i"
             i=$((i + 1))
           done
           
-          cd coverage-data
-          echo "Files in coverage-data:"
-          ls -la
-          
-          echo "Running coverage combine..."
-          coverage combine || { echo "coverage combine failed"; exit 1; }
+          echo "Running coverage combine from workspace root..."
+          coverage combine coverage-data/ || { echo "coverage combine failed"; exit 1; }
           
           echo "Generating XML report..."
-          coverage xml -o coverage.xml || { echo "coverage xml failed"; exit 1; }
+          coverage xml -o coverage-data/coverage.xml || { echo "coverage xml failed"; exit 1; }
           
           echo "Generating text report..."
           coverage report || { echo "coverage report failed"; exit 1; }