The --clone-into CLI argument was registered and the helper
clone_repo_into_container() was implemented, but DevcontainerHandler.resolve()
never read the clone_into property or called the helper. This meant that
agents resource add container-instance --clone-into <url> silently ignored
the flag at runtime (acceptance criterion #2 from issue #7555 was unmet).
Wire the clone step into DevcontainerHandler.resolve(): after
activate_container() returns and the lifecycle tracker has a container_id,
validate the URL and call clone_repo_into_container(). Also add an
end-to-end BDD scenario that exercises the full handler to clone path via
mocks.
ISSUES CLOSED: #7555
- Adds a --clone-into option to the container-instance command to clone repository contents into a specified path during container setup.
- Fixes the devcontainer-instance sandbox strategy to ensure proper isolation, correct mount permissions, and deterministic behavior across environments.
- Updates related validation and error handling to reflect the new option and sandbox changes.
ISSUES CLOSED: #7555
HAL9000