We track real time spent listening — not audio time.

• Real time tracking: 1 minute at 2× speed = 30 seconds tracked (actual time spent)
• Session updates: Start when you hit play, update every ~10 seconds while playing, and finalize when you pause/stop
• Midnight splits: Sessions crossing midnight automatically split into separate days so daily goals stay accurate
• Completion tracking: Shows how far you made it through an episode and powers the “time left” indicator

This keeps your streaks honest and aligned with actual time invested.