feat(cursor): add contributor profile link and improve UI for Cursor account card

- Integrated a tooltip with a button to open the contributor's GitHub profile in the CursorAccountCard component.
- Updated the layout of the account card for better visual organization.
- Removed routing mode options from the configuration view and adjusted related translations in multiple languages.
- Cleaned up unused routing mode logic in the app state management.

internal/backend/server/config/manager.go

@@ -171,20 +171,6 @@ func (manager *Manager) LegacyRuntimeSnapshot(_ context.Context) (legacyruntime.
 	}, nil
 }
 
-func (manager *Manager) RouteMode(hasUpstreamURL bool) string {
-	if !hasUpstreamURL {
-		return DefaultRoutingMode
-	}
-	if manager == nil {
-		return DefaultRoutingMode
-	}
-	mode := normalizeRoutingMode(manager.Current().Routing.Mode)
-	if mode == "" {
-		return DefaultRoutingMode
-	}
-	return mode
-}
-
 func (manager *Manager) setCurrent(cfg Config) {
 	next := cfg
 	manager.current.Store(&next)