Phase 4: Dynamic Meta Tags
- Added react-helmet-async dependency
- Created SEOHead component with Open Graph and Twitter Card support
- Added HelmetProvider wrapper to App.tsx
- Integrated SEOHead in Product page (title, description, image, product info)
- Integrated SEOHead in Shop page (basic meta tags)
Phase 5: Auto-Flush Permalinks
- Enhanced settings change handler to only flush when spa_mode,
spa_page, or use_browser_router changes
- Plugin already flushes on activation (Installer.php)
This enables proper link previews when sharing product URLs
on Facebook, Twitter, Slack, etc.
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