Fix CI: separate test and lint steps with short traceback

.gitea/workflows/ci.yml

@@ -15,10 +15,14 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           python-version: '3.11'
-      - name: Run tests and linting
+      - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
           pip install -e ".[dev]"
-          python -m pytest tests/ -v --cov=src --cov-report=term-missing
+      - name: Run tests
+        run: |
+          python -m pytest tests/ -v --tb=short
+      - name: Check linting
+        run: |
           pip install ruff
           ruff check src/