A transfer whose idle key ended while the holder's bundle was down had its marker seen by no watch, so it stayed open for good. FollowIdle now hands every open transfer (IDs) to Expired once the watch is taken: one past its bound is dropped, one within it armed again for the rest. Claude-Session: https://claude.ai/code/session_01JG73KJNrH5EgFXMKKYSrig