Add a nosec comment to the http_requests.post call in EventService to suppress Bandit B113 warnings for the subscription post. Update many tests in test_utils_system.py to explicitly patch app.utils.system.os.name as 'posix' and app.utils.system.shutil.which to simulate presence of /usr/bin/sudo (and include sudo in apt/dnf side effects). Adjust test function signatures to accept the new mock and ensure package/service tests run as a non-root POSIX environment with sudo available.
Refactor services to use centralized system helpers (ServiceControl, PackageManager, run_privileged, is_command_available) instead of ad-hoc subprocess/os calls. Updated deployment, firewall, ftp, nginx, php, python, security, and ssl services to call the new utilities and added error/timeout handling improvements and package manager abstraction. Added backend/app/utils/system.py implementing the helpers and backend/tests/test_utils_system.py with unit tests. This centralizes privileged command execution and service/package management, simplifying tests and platform differences.
Juan Denis