[loop-cycle-7] refactor: split research.py into research/ subpackage (#1405) (#1458)

src/config.py

@@ -3,6 +3,7 @@
 All environment variable access goes through the ``settings`` singleton
 exported from this module — never use ``os.environ.get()`` in app code.
 """
+
 import logging as _logging
 import os
 import sys