创建群，拉假人入群

src/main/java/com/tailbet/service/IFakeUserService.java

@@ -38,4 +38,9 @@ public interface IFakeUserService {
      * 获取假人列表
      */
     List<User> getFakeUsers();
+
+    /**
+     * 从现有假人中随机挑选指定数量
+     */
+    List<User> pickFakeUsers(int count);
 }

src/main/java/com/tailbet/service/impl/FakeUserServiceImpl.java

@@ -174,4 +174,18 @@ public class FakeUserServiceImpl implements IFakeUserService {
                 .eq(User::getIsFake, 1)
                 .eq(User::getStatus, 1));
     }
+
+    /**
+     * 从现有假人中随机挑选指定数量
+     */
+    @Override
+    public List<User> pickFakeUsers(int count) {
+        List<User> fakes = getFakeUsers();
+        if (fakes.isEmpty()) {
+            return List.of();
+        }
+        Collections.shuffle(fakes, RANDOM);
+        int size = Math.min(count, fakes.size());
+        return new ArrayList<>(fakes.subList(0, size));
+    }
 }

src/main/java/com/tailbet/service/impl/GroupServiceImpl.java

@@ -11,6 +11,7 @@ import com.tailbet.mapper.UserMapper;
 import com.tailbet.openim.OpenIMApiClient;
 import com.tailbet.service.IGroupService;
 import com.tailbet.service.IAuditService;
+import com.tailbet.service.IFakeUserService;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -38,6 +39,7 @@ public class GroupServiceImpl implements IGroupService {
     private final UserMapper userMapper;
     private final SysConfigMapper sysConfigMapper;
     private final IAuditService auditService;
+    private final IFakeUserService fakeUserService;
     private final OpenIMApiClient openIMApiClient;
 
     /**
@@ -132,16 +134,31 @@ public class GroupServiceImpl implements IGroupService {
             groupMemberMapper.insert(buildMember(groupId, botUserId, ROLE_NORMAL, now));
         }
 
-        // OpenIM 侧建群：群主为 owner，机器人作为初始成员
-        List<String> memberUserIDs = ownerIsBot
-                ? List.of()
-                : List.of(String.valueOf(botUserId));
+        // 机器人入群
+        if (!ownerIsBot) {
+            groupMemberMapper.insert(buildMember(groupId, botUserId, ROLE_NORMAL, now));
+        }
+
+        // 从现有假人中挑选10个进群
+        List<User> fakeUsers = fakeUserService.pickFakeUsers(10);
+        for (User fake : fakeUsers) {
+            groupMemberMapper.insert(buildMember(groupId, fake.getId(), ROLE_NORMAL, now));
+        }
+
+        // OpenIM 侧建群：群主、机器人和假人作为初始成员
+        List<String> memberUserIDs = new java.util.ArrayList<>();
+        if (!ownerIsBot) {
+            memberUserIDs.add(String.valueOf(botUserId));
+        }
+        fakeUsers.stream()
+                .map(fake -> String.valueOf(fake.getId()))
+                .forEach(memberUserIDs::add);
         openIMApiClient.createGroup(String.valueOf(groupId), name, String.valueOf(ownerUserId), memberUserIDs);
 
         // 审计日志
         auditService.log(groupId, null, operatorId, "CREATE_GROUP",
-                String.format("{\"name\":\"%s\",\"ownerUserId\":%d,\"botUserId\":%d}",
-                        name.replace("\\", "\\\\").replace("\"", "\\\""), ownerUserId, botUserId));
+                String.format("{\"name\":\"%s\",\"ownerUserId\":%d,\"botUserId\":%d,\"fakeCount\":%d}",
+                        name.replace("\\", "\\\\").replace("\"", "\\\""), ownerUserId, botUserId, fakeUsers.size()));
 
         log.info("创建群成功: groupId={}, name={}, ownerUserId={}, botUserId={}, operatorId={}",
                 groupId, name, ownerUserId, botUserId, operatorId);