fix: use pure shell steps without actions/checkout

.gitea/workflows/ci.yml

@@ -10,45 +10,23 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - run: |
-          echo "Testing CI..."
+      - name: Checkout
+        run: |
+          pwd
+          ls -la
+      - name: Test Python
+        run: |
           python3 --version
           pip3 --version
-
-      - name: Checkout
-        uses: actions/checkout@v4
-
       - name: Install deps
         run: |
           pip3 install -e ".[dev]"
-
-      - name: Lint
+      - name: Run lint
         run: |
           ruff check src/
-
-      - name: Type check
+      - name: Run type check
         run: |
           mypy src/
-
-      - name: Test
+      - name: Run tests
         run: |
           pytest tests/ -v
-
-  build:
-    runs-on: ubuntu-latest
-    needs: test
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Install deps
-        run: |
-          pip3 install -e .
-
-      - name: Verify import
-        run: |
-          python3 -c "import memory_manager; print(memory_manager.__version__)"
-
-      - name: Verify CLI
-        run: |
-          memory --version