- Use exact layout names: 'ai' and 'Diy module' (as in TradingView)
- Update default selected layouts to ['ai', 'Diy module']
- Keep display names exactly as they appear in TradingView
- Add lowercase fallback mapping in backend for 'diy module'
- Remove normalization that was changing the exact names
This ensures UI shows exactly what's in the TradingView account and selection state matches display.