Every ACTION_START - and every null intent delivered by START_STICKY - called
startReporting(), which always constructed a new AprsReporter and overwrote the
field without stopping the old one. AprsReporter owns an independent
SupervisorJob + periodic while(isActive) loop, so every overwritten instance
kept reporting forever and could no longer be reached by ACTION_STOP.
Simulation:
five ACTION_START events: 5 running reporters, 4 leaked -> fixed: 1 / 0
START + 3 sticky restarts: 4 running, 3 leaked -> fixed: 1 / 0
mixed real sequence: 4 running, 3 leaked -> fixed: 1 / 0
At the default 10-minute interval, four leaked reporters send 24 duplicate
position packets per hour and open 24 needless connections; this also amplifies
the connect-time socket leak fixed earlier.
startReporting now returns when the current reporter is active. Config changes
remain correct: AprsCard explicitly sends ACTION_STOP before ACTION_START, so
the old reporter is stopped and nulled before the new configuration starts.
:app:compileReleaseKotlin BUILD SUCCESSFUL.