fix: 修复实机测试发现的可靠性问题 (v2.2.0-rc.1)

- UDP 插件在 -p 指定端口时被跳过
- Redis exploit 无超时保护 / readReply 吞没非超时错误
- service_probe 连接丢失后静默成功
- SNMP 探测成功但终端无输出
- SSH 爆破不稳定 (并发过高 + 自适应超时过短 + 限流误判)
- 进度条 isActive 竞态

新增 Config.ModuleTimeout() 协议级超时下限 (≥3s)
新增 ErrorTypeThrottle 限流错误分类

plugins/services/vnc.go

@@ -74,7 +74,7 @@ func (p *VNCPlugin) doVNCAuth(ctx context.Context, info *common.HostInfo, cred C
 	resultChan := make(chan *AuthResult, 1)
 
 	go func() {
-		conn, err := session.DialTCP(ctx, "tcp", target, session.Config.Timeout)
+		conn, err := session.DialTCP(ctx, "tcp", target, session.Config.ModuleTimeout())
 		if err != nil {
 			resultChan <- &AuthResult{
 				Success:   false,
@@ -84,7 +84,7 @@ func (p *VNCPlugin) doVNCAuth(ctx context.Context, info *common.HostInfo, cred C
 			return
 		}
 
-		_ = conn.SetDeadline(time.Now().Add(session.Config.Timeout))
+		_ = conn.SetDeadline(time.Now().Add(session.Config.ModuleTimeout()))
 
 		vncConfig := &vnc.ClientConfig{
 			Auth: []vnc.ClientAuth{