移除频道黑名单

# 解除误加入黑名单的用户
curl -X POST "/channel/blacklist_remove" -d '{
  "channel_id": "group123",
  "channel_type": 2,
  "uids": ["innocent_user"]
}'

# 批量移除多个用户
curl -X POST "/channel/blacklist_remove" -d '{
  "channel_id": "group123",
  "channel_type": 2,
  "uids": ["user1", "user2", "user3"]
}'

# 临时解除用户限制
curl -X POST "/channel/blacklist_remove" -d '{
  "channel_id": "group123",
  "channel_type": 2,
  "uids": ["temp_banned_user"]
}'

async function removeFromBlacklistWithRetry(channelId, channelType, uids, maxRetries = 3) {
  for (let i = 0; i < maxRetries; i++) {
    try {
      const response = await fetch('/channel/blacklist_remove', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          channel_id: channelId,
          channel_type: channelType,
          uids: uids
        })
      });
      
      if (response.ok) {
        return await response.json();
      }
      
      if (response.status >= 400 && response.status < 500) {
        // 客户端错误，不重试
        throw new Error(`Client error: ${response.status}`);
      }
    } catch (error) {
      if (i === maxRetries - 1) throw error;
      await new Promise(resolve => setTimeout(resolve, Math.pow(2, i) * 1000));
    }
  }
}