Fix CI workflow - use native Gitea Actions syntax

.gitea/workflows/ci.yml

@@ -6,17 +6,25 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        run: |
+          git clone https://7000pct.gitea.bloupla.net/7000pctAUTO/man-card.git /tmp/man-card
+          cd /tmp/man-card
+          git checkout main
 
       - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: '3.11'
+        run: |
+          cd /tmp/man-card
+          apt-get update -qq
+          apt-get install -y -qq python3 python3-pip python3-venv > /dev/null 2>&1
+          python3 --version
 
       - name: Install dependencies
         run: |
-          pip install -e .
-          pip install pytest pytest-cov
+          cd /tmp/man-card
+          pip install -q -e .
+          pip install -q pytest pytest-cov
 
       - name: Run tests
-        run: pytest tests/ -v --cov=man_card --cov-report=term-missing
+        run: |
+          cd /tmp/man-card
+          pytest tests/ -v --cov=man_card --cov-report=term-missing