🔧 Implement Ruff as check instead of Black creating a commit

.github/workflows/format-python.yml

@@ -1,23 +1,26 @@
-name: Format Python
+name: Ensure formatted code
 on:
   pull_request:
     types: [ opened, edited, reopened, synchronize, ready_for_review ]
   workflow_dispatch:
 jobs:
-  format:
+  format_check:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-        with:
-          repository: ${{ github.event.pull_request.head.repo.full_name }}
-          ref: ${{ github.event.pull_request.head.ref }}
-      - name: Format code with black
+      - name: Install ruff
+        run: pip install ruff
+      - name: Check formatting for Python code
         run: |
-          pip install black
-          black --line-length 120 .
-      - name: Commit changes
-        uses: EndBug/add-and-commit@v9
-        with:
-          default_author: github_actions
-          message: "Formatted code with black --line-length 120"
-          add: "."
+          trap 'format_output=$(ruff format --check); echo "$format_output"; echo "$format_output" | sed "s/^/::warning file=/" > format_output.txt; gh pr comment ${{ github.event.pull_request.number }} --body "$(cat format_output.txt)"' ERR
+          ruff format --check
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install ruff
+        run: pip install ruff
+      - name: Lint Python code
+        run: |
+            trap 'lint_output=$(ruff check); echo "$lint_output"; echo "$lint_output" | sed "s/^/::warning file=/" > lint_output.txt; gh pr comment ${{ github.event.pull_request.number }} --body "$(cat lint_output.txt)"' ERR
+            ruff check