- Migrate 10 files from logging to aitbc.get_logger
- combined_main.py, p2p_network.py, chain_sync.py
- network/bridge_manager.py, network/island_manager.py, network/nat_traversal.py
- network/multi_chain_manager.py, network/hub_manager.py, network/hub_discovery.py
- Remove logging.basicConfig() from combined_main.py
- Migrate hardcoded paths in config.py and hub_manager.py to use DATA_DIR and KEYSTORE_DIR constants