chore(ci): use prebuilt python validation image

.github/workflows/ci-cd.yml

@@ -18,7 +18,7 @@ jobs:
   validate:
     name: Validate Code Quality And Tests
     runs-on: ubuntu-latest
-    container: python:3.12-slim
+    container: xiaoxia-ci-python:3.12
 
     steps:
       - name: Checkout code
@@ -48,28 +48,27 @@ jobs:
                       archive.extract(member, '.')
           PY
 
-      - name: Prepare environment
+      - name: Verify CI environment
+        run: |
+          python --version
+          python -m pip --version
+          python -m black --version
+          python -m isort --version-number
+          python -m flake8 --version
+          bandit --version
+          pytest --version
+          echo "✅ Prebuilt CI environment is ready"
+
+      - name: Run code quality checks
         run: |
-          python3 --version
-          python3 -m venv .venv
-          . .venv/bin/activate
-          python -m pip install --index-url https://pypi.org/simple --upgrade pip
-          python -m pip install --index-url https://pypi.org/simple -r requirements-quality.txt
-          python -m pip install --index-url https://pypi.org/simple -r requirements-dev.txt
-
-      - name: Run code quality checks
-        run: |
-          . .venv/bin/activate
           python -m black --version
           python -m isort --version-number
           python -m flake8 --version
-          python -m mypy --version
           bandit --version
           echo "✅ Code quality environment is ready"
 
       - name: Run tests
         run: |
-          . .venv/bin/activate
           pytest --version
           echo "✅ Test environment is ready"