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/context.go

@@ -34,7 +34,6 @@ type Context struct {
 	StartedAt time.Time
 
 	UpstreamURL *url.URL
-	Mode        ExecutionMode
 	LastError   error
 
 	Logger *slog.Logger
@@ -48,7 +47,6 @@ func newContext(writer http.ResponseWriter, request *http.Request, route Route)
 		Protocol:  route.Protocol,
 		StartedAt: time.Now(),
 		Logger:    slog.Default(),
-		Mode:      ModeLocal,
 	}
 }