Use ruff for lint checks in github action

Author: gq153

.github/workflows/main.yml

@@ -32,12 +32,9 @@ jobs:
       - name: Display Python version
         run: python -c "import sys; print(sys.version)"
 
-      - name: Lint with flake8
+      - name: Lint with ruff
         run: |
-          # stop the build if there are Python syntax errors or undefined names
-          uv run flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-          # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
-          uv run flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+          uv run ruff check app tests
 
       - name: Run tests with coverage
         run: |