Fix content field not loading in product edit form

- Add 'content' field to fetchProducts SELECT query
- Fixes Rich Text Editor showing empty when editing products

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

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/pages/admin/AdminProducts.tsx

@@ -90,7 +90,7 @@ export default function AdminProducts() {
   const fetchProducts = async () => {
     const { data, error } = await supabase
       .from('products')
-      .select('id, title, slug, type, description, meeting_link, recording_url, m3u8_url, mp4_url, video_host, event_start, duration_minutes, price, sale_price, is_active, chapters')
+      .select('id, title, slug, type, description, content, meeting_link, recording_url, m3u8_url, mp4_url, video_host, event_start, duration_minutes, price, sale_price, is_active, chapters')
       .order('created_at', { ascending: false });
     if (!error && data) setProducts(data);
     setLoading(false);