Cancel packets retained by the radio driver when their mesh retry is retired.
Echo-confirmed delivery completes application replies; explicit cancellation
releases failure references. Let active transmissions finish and prevent a
cancelled packet from returning after a driver timeout.
Preserve final direct-echo waits when only the other radio profile or crossover
policy changes. Recover verified radio-profile settings from backup even when
filesystem repair fails, and protect the backup after a failed save rollback.
Add regressions for direct and flood cancellation, confirmed command replies,
active TX completion and timeouts, subsequent packet cleanup, independent
profile echo ownership, and storage rename/removal failures.
mikecarper
e720132a8b