dotbot/controller: apply isort to the import block

AI-assisted: Claude Opus 5.5

Author: geonnave

dotbot/controller.py

@@ -95,7 +95,6 @@
 from dotbot.trail import Trail
 from dotbot.twin import DotBotTwin
 
-
 INACTIVE_DELAY = 5  # seconds
 LOST_DELAY = 60  # seconds
 # A robot silent this long no longer names what a camera sees.