在MessageList组件中添加未知联系人补充功能，异步拉取缺失的头像和昵称信息，并更新会话和联系人数据库，以提升用户信息的准确性和完整性。

Touchkebao/src/pages/pc/ckbox/weChat/components/SidebarMenu/MessageList/index.tsx

@@ -47,6 +47,7 @@ const MessageList: React.FC<MessageListProps> = () => {
   } = useMessageStore();
   const [filteredSessions, setFilteredSessions] = useState<ChatSession[]>([]);
   const [syncing, setSyncing] = useState(false); // 同步状态
+  const hasEnrichedRef = useRef(false); // 是否已做过未知联系人补充
 
   // 右键菜单相关状态
   const [contextMenu, setContextMenu] = useState<{
@@ -296,7 +297,130 @@ const MessageList: React.FC<MessageListProps> = () => {
     };
   }, [contextMenu.visible]);
 
-  // ==================== 数据加载 ====================
+  // ==================== 数据加载 & 未知联系人补充 ====================
+
+  // 同步完成后，检查是否存在“未知联系人”或缺失头像/昵称的会话，并异步补充详情
+  const enrichUnknownContacts = async () => {
+    if (!currentUserId) return;
+    if (hasEnrichedRef.current) return; // 避免重复执行
+
+    // 只在会话有数据时执行
+    if (!sessions || sessions.length === 0) return;
+
+    const needEnrich = sessions.filter(s => {
+      const noName = !s.conRemark && !s.nickname && !s.wechatId;
+      const isUnknownNickname = s.nickname === "未知联系人";
+      const noAvatar = !s.avatar;
+      return noName || isUnknownNickname || noAvatar;
+    });
+
+    if (needEnrich.length === 0) {
+      hasEnrichedRef.current = true;
+      return;
+    }
+
+    hasEnrichedRef.current = true;
+
+    // 逐个异步拉取详情，失败不打断整体流程
+    for (const session of needEnrich) {
+      try {
+        let detailResult: any = null;
+        if (session.type === "friend") {
+          detailResult = await getWechatFriendDetail({ id: session.id });
+        } else {
+          detailResult = await getWechatChatroomDetail({ id: session.id });
+        }
+
+        const detail = detailResult?.detail;
+        if (!detail) continue;
+
+        // 更新会话列表 UI
+        setSessionState(prev =>
+          prev.map(s =>
+            s.id === session.id && s.type === session.type
+              ? {
+                  ...s,
+                  avatar:
+                    session.type === "group"
+                      ? detail.chatroomAvatar || s.avatar
+                      : detail.avatar || s.avatar,
+                  nickname: detail.nickname || s.nickname,
+                  conRemark: detail.conRemark || s.conRemark,
+                  wechatId: detail.wechatId || s.wechatId,
+                }
+              : s,
+          ),
+        );
+
+        // 同步到会话数据库
+        await MessageManager.updateSession({
+          userId: currentUserId,
+          id: session.id,
+          type: session.type,
+          avatar:
+            session.type === "group"
+              ? detail.chatroomAvatar || session.avatar
+              : detail.avatar || session.avatar,
+          nickname: detail.nickname || session.nickname,
+          conRemark: detail.conRemark || session.conRemark,
+          wechatId: detail.wechatId || session.wechatId,
+        });
+
+        // 同步到联系人数据库（方便后续搜索、其它页面使用）
+        const contactBase: any = {
+          serverId: `${session.type}_${session.id}`,
+          userId: currentUserId,
+          id: session.id,
+          type: session.type,
+          wechatAccountId: detail.wechatAccountId,
+          nickname: detail.nickname || "",
+          conRemark: detail.conRemark || "",
+          avatar:
+            session.type === "group"
+              ? detail.chatroomAvatar || ""
+              : detail.avatar || "",
+          lastUpdateTime: new Date().toISOString(),
+          sortKey: "",
+          searchKey: (detail.conRemark || detail.nickname || "").toLowerCase(),
+        };
+
+        if (session.type === "group") {
+          Object.assign(contactBase, {
+            chatroomId: detail.chatroomId,
+            chatroomOwner: detail.chatroomOwner,
+            selfDisplayName: detail.selfDisplyName,
+            notice: detail.notice,
+          });
+        } else {
+          Object.assign(contactBase, {
+            wechatFriendId: detail.id,
+            wechatId: detail.wechatId,
+            alias: detail.alias,
+            gender: detail.gender,
+            region: detail.region,
+            signature: detail.signature,
+            phone: detail.phone,
+            quanPin: detail.quanPin,
+            groupId: detail.groupId,
+          });
+        }
+
+        // 使用 upsert 逻辑：如果已存在就更新，不存在则新增
+        const existContact = await ContactManager.getContactByIdAndType(
+          currentUserId,
+          session.id,
+          session.type,
+        );
+        if (existContact) {
+          await ContactManager.updateContact(contactBase);
+        } else {
+          await ContactManager.addContact(contactBase);
+        }
+      } catch (error) {
+        console.error("补拉未知联系人详情失败:", error, session);
+      }
+    }
+  };
 
   // 与服务器同步数据（优化版：逐页同步，立即更新UI）
   const syncWithServer = async () => {
@@ -379,6 +503,8 @@ const MessageList: React.FC<MessageListProps> = () => {
       console.log(
         `会话同步完成: 成功${successCount}页, 失败${failCount}页, 共处理${totalProcessed}条数据`,
       );
+      // 同步完成后，异步补充未知联系人信息
+      enrichUnknownContacts();
     } catch (error) {
       console.error("同步服务器数据失败:", error);
     } finally {
@@ -805,59 +931,6 @@ const MessageList: React.FC<MessageListProps> = () => {
     // 设置当前会话
     setCurrentContact(session as any);
 
-    // 如果头像或昵称缺失，则尝试拉取详情并更新列表
-    const needFetchDetail =
-      !session.avatar ||
-      !(session.conRemark || session.nickname || session.wechatId);
-
-    if (needFetchDetail) {
-      try {
-        let detailResult: any = null;
-        if (session.type === "friend") {
-          detailResult = await getWechatFriendDetail({ id: session.id });
-        } else {
-          detailResult = await getWechatChatroomDetail({ id: session.id });
-        }
-
-        const detail = detailResult?.detail;
-        if (detail) {
-          // 1. 更新会话列表中的该条记录（驱动 UI 立即更新头像和昵称）
-          setSessionState(prev =>
-            prev.map(s =>
-              s.id === session.id && s.type === session.type
-                ? {
-                    ...s,
-                    avatar:
-                      session.type === "group"
-                        ? detail.chatroomAvatar || s.avatar
-                        : detail.avatar || s.avatar,
-                    nickname: detail.nickname || s.nickname,
-                    conRemark: detail.conRemark || s.conRemark,
-                    wechatId: detail.wechatId || s.wechatId,
-                  }
-                : s,
-            ),
-          );
-
-          // 2. 同步到会话数据库，保证刷新后数据仍然是最新的
-          await MessageManager.updateSession({
-            userId: currentUserId,
-            id: session.id,
-            type: session.type,
-            avatar:
-              session.type === "group"
-                ? detail.chatroomAvatar || session.avatar
-                : detail.avatar || session.avatar,
-            nickname: detail.nickname || session.nickname,
-            conRemark: detail.conRemark || session.conRemark,
-            wechatId: detail.wechatId || session.wechatId,
-          });
-        }
-      } catch (e) {
-        console.error("点击会话补拉详情失败:", e);
-      }
-    }
-
     // 标记为已读（不更新时间和排序）
     if (session.config.unreadCount > 0) {
       // 立即更新UI（只更新未读数量）