feat: Complete email notifications system with comprehensive functionality

- Implement comprehensive email notification system for ticket purchases and event reminders
- Add event reminder job with configurable scheduling
- Enhance ticket mailer with QR code generation and proper formatting
- Update order model with email delivery tracking
- Add comprehensive test coverage for all email functionality
- Configure proper mailer settings and disable annotations
- Update backlog to reflect completed email features

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

BACKLOG.md

@@ -3,9 +3,11 @@
 ## 📋 Todo
 
 ### High Priority
+
 - [ ] feat: Check-in system with QR code scanning
 
 ### Medium Priority
+
 - [ ] feat: Promoter system with event creation, ticket types creation and metrics display
 - [ ] feat: Multiple ticket types (early bird, VIP, general admission)
 - [ ] feat: Refund management system
@@ -15,6 +17,7 @@
 - [ ] feat: Dynamic pricing based on demand
 
 ### Low Priority
+
 - [ ] feat: SMS integration for ticket delivery and updates
 - [ ] feat: Mobile wallet integration
 - [ ] feat: Multi-currency support
@@ -25,11 +28,14 @@
 - [ ] feat: Event recommendations system
 
 ### Design & Infrastructure
+
 - [ ] style: Rewrite design system
 - [ ] refactor: Rewrite design mockup
 
 ## 🚧 Doing
 
+- [ ] feat: Page to display all tickets for an event
+- [ ] feat: Add a link into notification email to order page that display all tickets
 
 ## ✅ Done