fix: correct codecov upload paths in testing workflow

Align pytest coverage output paths with codecov input paths:

- Change from generic directory search to explicit file path

- Add explicit output paths: html:var/coverage/html and xml:var/coverage/pytest-cobertura.xml

- Add term-missing for better coverage output

- Fixes "No coverage reports found" error

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <[email protected]>

Author: woutervh

.github/workflows/testing.yaml

@@ -94,16 +94,15 @@ jobs:
           run: uv sync --all-groups
 
         - name: Run tests
-          run: uv run pytest tests --color=yes --cov=src --cov-fail-under=50 --cov-report html --cov-report xml --cov-report term -v
+          run: uv run pytest tests --color=yes --cov=src --cov-fail-under=50 --cov-report html:var/coverage/html --cov-report xml:var/coverage/pytest-cobertura.xml --cov-report term-missing -v
 
         # repo: https://github.com/codecov/codecov-action
         # releases: https://github.com/codecov/codecov-action/tags
         - name: "Upload coverage to Codecov"
           uses: codecov/codecov-action@671740ac38dd9b0130fbe1cec585b89eea48d3de  # v5.5.2 released on 09-12-2025
           with:
               fail_ci_if_error: true  # false is default
-              # files: var/coverage/coverage.xml  # optional
-              directory: var/coverage
+              files: var/coverage/pytest-cobertura.xml
               flags: unittests # optional
               token: ${{ secrets.CODECOV_TOKEN }}  # not required for public repos
               verbose: true  # false is default