How can I add real-time features like a chat or live feed to my app?

Use Supabase real-time subscriptions. Prompt Lovable: 'Add a real-time chat feature' or 'Create a live feed with real-time updates.' Lovable scaffolds Supabase Realtime subscriptions that push updates to all connected clients instantly. You'll need to set up a messages table in the database, and Lovable generates the subscription logic and UI components.