refactor(ckbox): 统一联系人数据结构并简化聊天会话处理

- 将ContactData接口添加索引签名以支持动态属性
- 移除ChatSession接口，直接使用ContactData作为聊天会话类型
- 简化组件间数据传递和状态管理
- 更新相关组件props类型定义

Cunkebao/src/pages/pc/ckbox/components/SidebarMenu/WechatFriendsModule.tsx

@@ -6,7 +6,7 @@ import styles from "./ContactListSimple.module.scss";
 interface ContactListSimpleProps {
   contacts: ContactData[];
   onContactClick: (contact: ContactData) => void;
-  selectedContactId?: number;
+  selectedContactId?: ContactData;
 }
 
 const ContactListSimple: React.FC<ContactListSimpleProps> = ({
@@ -24,18 +24,16 @@ const ContactListSimple: React.FC<ContactListSimpleProps> = ({
           <List.Item
             key={contact.id}
             onClick={() => onContactClick(contact)}
-            className={`${styles.contactItem} ${contact.id === selectedContactId ? styles.selected : ""}`}
+            className={`${styles.contactItem} ${contact.id === selectedContactId?.id ? styles.selected : ""}`}
           >
             <div className={styles.avatarContainer}>
-              <Badge dot={contact.online} color="green" offset={[-5, 5]}>
-                <Avatar
-                  src={contact.avatar}
-                  icon={
-                    !contact.avatar && <span>{contact.nickname.charAt(0)}</span>
-                  }
-                  className={styles.avatar}
-                />
-              </Badge>
+              <Avatar
+                src={contact.avatar}
+                icon={
+                  !contact.avatar && <span>{contact.nickname.charAt(0)}</span>
+                }
+                className={styles.avatar}
+              />
             </div>
             <div className={styles.contactInfo}>
               <div className={styles.name}>{contact.nickname}</div>