Updated logic in heartFC_chat.py and relationship_manager.py to prioritize 'chat_info_platform', then 'user_platform', and finally a default when determining platform information. Added a fallback to 'unknown' in get_person_id if platform is None, improving robustness when platform data is missing.
Co-Authored-By: tt-P607 <68868379+tt-P607@users.noreply.github.com>
Cleaned up various files by removing unused or redundant import statements to improve code readability and reduce potential confusion. No functional changes were made.
