fix: resolve CI PATH issues by using python -m for pytest and ruff

.gitea/workflows/ci.yml

@@ -11,9 +11,47 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
         with:
           python-version: '3.11'
-      - run: pip install -e ".[dev]"
-      - run: pytest tests/ -v
-      - run: ruff check .
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -e ".[dev]"
+
+      - name: Run tests
+        run: python -m pytest tests/ -v --cov=src
+
+      - name: Run linting
+        run: python -m ruff check src/ tests/
+
+  build:
+    needs: test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+          cache: 'pip'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install .
+
+      - name: Build package
+        run: |
+          pip install build
+          python -m build
+
+      - name: Upload package
+        uses: actions/upload-artifact@v4
+        with:
+          name: dist
+          path: dist/