fix(frontend): remove inner padding from file tree container

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/ai-elements/file-tree.tsx

@@ -89,7 +89,7 @@ export const FileTree = ({
         role="tree"
         {...props}
       >
-        <div className="w-max min-w-full p-2">{children}</div>
+        <div className="w-max min-w-full">{children}</div>
       </div>
     </FileTreeContext.Provider>
   )