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/ftp.go

@@ -81,7 +81,7 @@ func (p *FTPPlugin) createAuthFunc(info *common.HostInfo, config *common.Config,
 func (p *FTPPlugin) doFTPAuth(ctx context.Context, info *common.HostInfo, cred Credential, config *common.Config, state *common.State) *AuthResult {
 	target := info.Target()
 
-	conn, err := ftplib.Dial(target, ftpDialOptions(ctx, config.Timeout)...)
+	conn, err := ftplib.Dial(target, ftpDialOptions(ctx, config.ModuleTimeout())...)
 	if err != nil {
 		state.IncrementTCPFailedPacketCount()
 		return &AuthResult{
@@ -162,7 +162,7 @@ func (p *FTPPlugin) identifyService(info *common.HostInfo, session *common.ScanS
 	state := session.State
 	target := info.Target()
 
-	conn, err := ftplib.Dial(target, ftplib.DialWithTimeout(config.Timeout))
+	conn, err := ftplib.Dial(target, ftplib.DialWithTimeout(config.ModuleTimeout()))
 	if err != nil {
 		state.IncrementTCPFailedPacketCount()
 		return &ScanResult{
@@ -241,7 +241,7 @@ func (p *FTPPlugin) testAnonymousAccess(ctx context.Context, info *common.HostIn
 func (p *FTPPlugin) getFileListAfterAuth(info *common.HostInfo, username, password string, config *common.Config, state *common.State) []string {
 	target := info.Target()
 
-	conn, err := ftplib.Dial(target, ftplib.DialWithTimeout(config.Timeout))
+	conn, err := ftplib.Dial(target, ftplib.DialWithTimeout(config.ModuleTimeout()))
 	if err != nil {
 		return nil
 	}