fix and update

apps/frontend/lib/api.ts

@@ -107,6 +107,7 @@ export interface PublicUser {
   verificationIcon?: string | null;
   canVerifyUsers?: boolean;
   canManageBots?: boolean;
+  canModerateChats?: boolean;
 }
 
 export interface AdminUser {
@@ -658,6 +659,50 @@ export interface SignInEvent {
   createdAt: string;
 }
 
+export interface AdminUserActivityItem {
+  id: string;
+  action: string;
+  title: string;
+  detail?: string;
+  entityType?: string;
+  entityId?: string;
+  createdAt: string;
+}
+
+export interface AdminChatRoomSummary {
+  id: string;
+  type: string;
+  name: string;
+  groupId: string;
+  groupName: string;
+  memberCount: number;
+  messageCount: number;
+  members: Array<{ id: string; displayName: string }>;
+  lastMessage?: {
+    id: string;
+    senderName: string;
+    preview: string;
+    createdAt: string;
+  };
+  joinedAt: string;
+}
+
+export interface AdminChatMessage {
+  id: string;
+  senderId: string;
+  senderName: string;
+  type: string;
+  content?: string | null;
+  preview: string;
+  isEncrypted: boolean;
+  isDeleted: boolean;
+  createdAt: string;
+  editedAt?: string;
+  roomId?: string;
+  roomName?: string;
+  groupName?: string;
+}
+
 export interface ActiveSession {
   id: string;
   userId: string;