docs: replace manual cov badge by codecov

.github/workflows/test.yml

@@ -15,6 +15,9 @@ jobs:
     timeout-minutes: 20
     name: Test on ${{ matrix.os }} Python ${{ matrix.python-version }}
     runs-on: ${{ matrix.os }}
+    permissions:
+      contents: read
+      id-token: write # Required for Codecov OIDC authentication
     strategy:
       fail-fast: false
       matrix:
@@ -51,12 +54,20 @@ jobs:
     - name: Clone repository
       uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # 6.0.3
       with:
-        persist-credentials: false
+        persist-credentials: true # Required for Codecov OIDC authentication
 
     - name: Test with pytest
       run: |
         uv run --python ${{ matrix.python-version }} --group tests --locked pytest
 
+    - name: Upload coverage to Codecov
+      if: matrix.os == 'ubuntu-26.04' && matrix.python-version == '3.14'
+      uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v7.0.0
+      with:
+        use_oidc: true
+        files: ./coverage.xml
+        fail_ci_if_error: false
+
   lint:
     timeout-minutes: 10
     name: Lint with Ruff

README.md

@@ -3,7 +3,7 @@
 [![language tool python on pypi](https://img.shields.io/pypi/v/language-tool-python)](https://pypi.org/project/language-tool-python/)
 [![Documentation Status](https://readthedocs.org/projects/language-tool-python/badge/?version=latest)](https://language-tool-python.readthedocs.io/en/latest/)
 [![Test with PyTest](https://github.com/jxmorris12/language_tool_python/workflows/Test%20with%20PyTest/badge.svg)](https://github.com/jxmorris12/language_tool_python/actions)
-[![Coverage Status](https://raw.githubusercontent.com/jxmorris12/language_tool_python/master/coverage-badge.svg)](https://github.com/jxmorris12/language_tool_python/actions)
+[![Coverage Status](https://codecov.io/gh/jxmorris12/language_tool_python/branch/master/graph/badge.svg)](https://codecov.io/gh/jxmorris12/language_tool_python)
 [![Downloads](https://img.shields.io/pypi/dw/language-tool-python)](https://pypistats.org/packages/language-tool-python)
 [![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg)](LICENSE)
 [![Contributions Welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](https://github.com/jxmorris12/language_tool_python/pulls)