feat: Add integration tests for simple-ca functionality and implement shell script for CA operations

.gitea/workflows/test.yaml

@@ -4,7 +4,7 @@ on:
       - 'simple-ca.sh'
       - 'simple-ca.py'
       - 'run-tests.sh'
-      - 'src/simple-ca/**'
+      - 'test_simple_ca.py'
       - '.gitea/workflows/test.yaml'
 
 jobs:
@@ -19,20 +19,17 @@ jobs:
         with:
           python-version: '3.x'
 
-      - name: Run python tests
-        run: ./run-tests.sh python
+      - name: Install pytest
+        run: pip install pytest
 
-  test-go:
+      - name: Run python tests
+        run: python3 -m pytest test_simple_ca.py -v
+
+  test-shell:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
         uses: actions/checkout@v6
 
-      - name: Set up Go
-        uses: actions/setup-go@v5
-        with:
-          go-version: '1.25'
-          cache-dependency-path: src/simple-ca/go.sum
-
-      - name: Run go tests
-        run: ./run-tests.sh go
+      - name: Run shell tests
+        run: bash run-tests.sh