API returns { subscription: {...}|null, used_trial: bool } not flat MySubscription.
- Added MySubscriptionData interface with correct nested shape
- Extract my = myRaw.subscription and usedTrial = myRaw.used_trial separately
- Replace my.used_trial references with usedTrial variable
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>