- Implement singleton pattern for HVAC_Enhanced_Settings to prevent duplicate initialization
- Fix jQuery selector error by checking for valid hash selectors before using $(href)
- Add default email templates with professional copy for trainer notifications
- Update plugin version to 1.0.1 for cache busting
- Remove duplicate Enhanced Settings initialization from HVAC_Community_Events
- Add force cache refresh suffix to admin scripts
This resolves the duplicate content issue on email templates page and fixes
JavaScript errors in the admin interface.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
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