feat(UI): Introduce new UI components for file attachments and related views (#191)

Add file management API and UI components
Implement directory listing, search and CRUD operations in desktop backend
Expose new Files API on frontend to list, search, and modify files

packages/ui/src/components/chat/message/MessageHeader.tsx

@@ -19,7 +19,7 @@ const MessageHeader: React.FC<MessageHeaderProps> = ({ isUser, providerID, agent
 
     return (
         <FadeInOnReveal>
-            <div className={cn('pl-3', 'mb-2')}>
+            <div className={cn('mb-2')}>
                 <div className={cn('flex items-center justify-between gap-2')}>
                     <div className="flex items-center gap-2">
                         <div className="flex-shrink-0">