Bug Fixes
- deduplicate subscribers by user and show device count
- update Subscriber type to flat user-grouped structure
- use separate queries to avoid Prisma Accelerate relation type issue
- removed used function
Features
- add signup funnel and OTP delivery PostHog events
- track signup funnel events with PostHog
- add sms-service for Msg91 OTP delivery
- add subscriber list and category breakdown to notification analytics
- return subscribers and per-category stats in notification analytics API
- smart channel routing based on WhatsApp delivery history
- send SMS fallback when WhatsApp OTP delivery fails
- save template messages to WhatsAppMessage table for webhook tracking