- Add support for subscription.uncanceled webhook event
- Fix spelling mismatch for subscription.canceled (Polar) vs subscription.cancelled (code)
- Implement proper cancel_at_period_end handling in subscription.canceled events
- Add cancelled_at field updates for subscription.updated events
- Handle Polar's spelling variants (canceled_at vs cancelled_at) consistently
- Remove non-existent pause_reason column from subscription uncanceled handler
- Enhance webhook logging with detailed field update tracking
- Add comprehensive cancellation metadata storage in provider_data
- Gracefully handle null provider_subscription_id in payment confirmation polling
All Polar webhook events now properly sync subscription state including
cancellation timing, reasons, and billing period details.