[Feature]: `system-check` command creates hard-coded `data` folder

[iamyifan]

Is your feature request related to a problem? Please describe.

synthetic-data-kit system-check command always creates a hard-coded folder name data (including subfolders parsed, generated, curated, final) every time.

Notice that

# cli.py, line 29
# Create app context
ctx = AppContext()

will always call _ensure_data_dirs to automatically create a folder data and its 4 subfolders,

# core/context.py, line 22
# Ensure data directories exist
self._ensure_data_dirs()

which is not necessary for a system checking functionality.

Ideally, system-check command can take -c <config_path> as a param, and check whether the specified parsed, generated, curated, final folders exist.

Describe the solution you'd like

Add -c <config_path> param for system-check CLI command to only check the specified folder names and paths by users.

Describe alternatives you've considered

No response

Additional context

No response