use github matrix to allow parallel runs

.github/workflows/python-package.yml

@@ -1,7 +1,7 @@
 # This workflow will install Python dependencies, run tests and lint with a variety of Python versions
 # For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
 
-name: Python package
+name: CI
 
 on:
   push:
@@ -114,12 +114,18 @@ jobs:
       - name: Download coverage data
         uses: actions/download-artifact@v4
         with:
-          name: coverage-*
+          pattern: coverage-*
           path: report
           merge-multiple: true
       - name: Combine and report coverage
         run: hatch run coverage:run
 
+      - name: Upload HTML report
+        uses: actions/upload-artifact@v4
+        with:
+          name: html-report
+          path: report/html
+
       - name: Upload Coverage to Codecov
         uses: codecov/codecov-action@v4
         with: