Previously, the ETA during phase 3 (database restores) would appear to
hang because dbPhaseElapsed was only updated when a new database started
restoring, not during the restore operation itself.
Fixed by:
- Added phase3StartTime to track when phase 3 begins
- Calculate dbPhaseElapsed in realtime using time.Since(phase3StartTime)
- ETA now updates every 100ms tick instead of only on database transitions
This ensures the elapsed time and ETA display continuously update during
long-running database restores.
Alexander Renz
72c06ba5c2