feat(frontend): followers/following tabs on remote actor profile with lazy loading + pagination

thoughts-frontend/components/remote-user-card.tsx

@@ -3,14 +3,19 @@
 import { useState } from "react";
 import { useAuth } from "@/hooks/use-auth";
 import Link from "next/link";
-import { followUser, RemoteActor } from "@/lib/api";
+import { followUser } from "@/lib/api";
 import { Button } from "@/components/ui/button";
 import { UserAvatar } from "@/components/user-avatar";
 import { toast } from "sonner";
 import { UserPlus } from "lucide-react";
 
 interface RemoteUserCardProps {
-  actor: RemoteActor;
+  actor: {
+    handle: string;
+    displayName: string | null;
+    avatarUrl: string | null;
+    url: string;
+  };
 }
 
 export function RemoteUserCard({ actor }: RemoteUserCardProps) {