* feat(instance_manager): add interactive stopping of Klipper instances with user confirmation
* fix(instance_utils): remove unnecessary 'self' parameter from stop_klipper_instances_interactively function
* refactor(tmc_autotune): replace internal stop function with direct call to stop_klipper_instances_interactively
* fix(backup_service): streamline backup methods for proper paths and add docstring
* fix(backup_service): add proper destination_path in verbose output
* fix(backup_service): replaces html headers with { } to avoid rendering
* nitpick(backup_service): correct variable name for backup destination path in logging