固件 0.1.14~0.1.16-c5：Hub 按需启停（hubctl）、开机长按统一 5 s

Co-Authored-By: Claude Opus 5.5 <[email protected]>

firmware/main/evlog.c

@@ -576,6 +576,7 @@ const char *evlog_ev_str(log_ev_t ev)
     case LOG_EV_OTA:            return "固件升级";
     case LOG_EV_BOOT_CHECK:     return "开机重按";
     case LOG_EV_CHG_MODE:       return "刷机模式";
+    case LOG_EV_HUB:            return "Hub启停";
     case LOG_EV_BLADE_MUTE:     return "刀片不应答关路";
     case LOG_EV_COUNT:          break;
     }