[TD-012] Missing __all__ in library modules

[LFigg]

Description

Python library modules don't define __all__, so from lib.utils import * would import internal/private functions.

Location

• Files: lib/config.py, lib/models.py, lib/utils.py

Impact

• Unintentional exposure of private APIs
• Potential for unintended imports
• Less clear public API surface

Suggested Fix

Add __all__ to each module defining the public API:

# lib/utils.py
__all__ = [
    'setup_logging',
    'parallel_collect',
    'retry_with_backoff',
    'redact_sensitive_data',
    # ... other public functions
]

Priority

Low

Source

TECH_DEBT.md - TD-012