update coverage handling on runner

.github/workflows/tests.yml

@@ -30,12 +30,7 @@ jobs:
       run: uv pip install --python .venv -e ".[dev]"
     - name: Run tests with coverage
       run: uv run --python .venv pytest --cov=cfold --cov-report=xml
-    - name: Generate coverage badge
-      run: uv run --python .venv coverage-badge -f -o coverage.svg
-    - name: Commit coverage badge
-      run: |
-        git config --local user.email "action@github.com"
-        git config --local user.name "GitHub Action"
-        git add coverage.svg
-        git commit -m "Update coverage badge" || echo "No changes to commit"
-        git push
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v3
+      with:
+        file: ./coverage.xml

README.md

@@ -1,4 +1,4 @@
-![Coverage](https://github.com/wr1/cfold/actions/workflows/tests.yml/coverage.svg)![Tests](https://github.com/wr1/cfold/actions/workflows/tests.yml/badge.svg)![Version](https://img.shields.io/github/v/release/wr1/cfold)
+![Coverage](https://codecov.io/gh/wr1/cfold/branch/master/graph/badge.svg)![Tests](https://github.com/wr1/cfold/actions/workflows/tests.yml/badge.svg)![Version](https://img.shields.io/github/v/release/wr1/cfold)
 # cfold
 
 <!-- `cfold` is a command-line tool that helps you prepare codebases for interaction with Large Language Models (LLMs). It can `fold` a directory of code into a single JSON file and `unfold` a modified version back into a directory structure. -->

pyproject.toml

@@ -25,7 +25,6 @@ dev = [
     "ruff>=0.6.0",
     "pytest>=7.1.3,<8",
     "pytest-cov>5.0.0",
-    "coverage-badge>=1.0.0",
 ]
 
 [tool.hatch.build.targets.sdist]