DEVX-113: fix: abort sync_wiki when list_wiki_pages fails

tests/unit/test_sync_wiki.py

@@ -537,8 +537,8 @@ class TestMain:
 
     @patch.dict("os.environ", {"CI_GITEA_TOKEN": "tok"}, clear=True)
     @patch("devx.ci.sync_wiki.GiteaClient")
-    def test_initial_list_api_error_treated_as_empty(self, mock_client_cls: MagicMock) -> None:
-        """When the initial page list fails, sync proceeds treating wiki as empty."""
+    def test_initial_list_api_error_aborts(self, mock_client_cls: MagicMock) -> None:
+        """When the initial page list fails, sync aborts to avoid duplicate pages."""
         mock_client = MagicMock()
         mock_client_cls.return_value = mock_client
         with patch("devx.ci.sync_wiki.MAPPING_FILE") as mock_mapping:
@@ -549,8 +549,9 @@ class TestMain:
                         with patch("devx.ci.sync_wiki.sync_page", return_value="created"):
                             runner = CliRunner()
                             result = runner.invoke(main, ["--repo", "owner/repo"])
-        assert result.exit_code == 0
-        assert "Created: Home" in result.output
+        assert result.exit_code != 0
+        assert "Failed to list existing wiki pages" in result.output
+        assert "Aborting" in result.output
 
     @patch.dict("os.environ", {"CI_GITEA_TOKEN": "tok"}, clear=True)
     @patch("devx.ci.sync_wiki.GiteaClient")