- Implement full CRUD operations for email template management
- Create modal-based interface with form validation and category organization
- Add dynamic placeholder system for personalizing emails with attendee/event data
- Integrate AJAX handlers for real-time save/load operations without page refresh
- Fix JavaScript conflicts by implementing override system after wp_footer()
- Add comprehensive E2E test coverage with Playwright validation
- Support default template installation for new trainers
- Enable REST API access for template post type
- Include extensive debugging and validation testing
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Co-Authored-By: Claude <noreply@anthropic.com>