Refactor Django project files to improve type hinting and code clarity

manage.py

@@ -1,22 +1,30 @@
 #!/usr/bin/env python
 """Django's command-line utility for administrative tasks."""
+
+from __future__ import annotations
+
 import os
 import sys
 
 
-def main():
-    """Run administrative tasks."""
-    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'config.settings')
+def main() -> None:
+    """Run administrative tasks.
+
+    Raises:
+        ImportError: If Django cannot be imported.
+    """
+    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "config.settings")
     try:
-        from django.core.management import execute_from_command_line
+        from django.core.management import execute_from_command_line  # noqa: PLC0415
     except ImportError as exc:
-        raise ImportError(
+        msg = (
             "Couldn't import Django. Are you sure it's installed and "
             "available on your PYTHONPATH environment variable? Did you "
             "forget to activate a virtual environment?"
-        ) from exc
+        )
+        raise ImportError(msg) from exc
     execute_from_command_line(sys.argv)
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     main()