fix(rotator): put the SP/LP readout inside the compass itself

It went under the Station Control rotator; the compass that wanted it is the
docked one beside the entry strip. Both are the same RotorCompass, so the
readout moves INTO that component: every compass in the app carries it, and no
caller draws its own.

The bezel already showed the short path as a red marker, but a marker is a
direction, not a number — and the numbers in the status bar are 10px, which is
what prompted this.

Clickable only when the caller passed onGoto, since a compass rendered without
one cannot turn anything and a button that does nothing is worse than a label.

app.go

@@ -354,6 +354,7 @@ const (
 	keyExtHRDLogCode       = "extsvc.hrdlog.code" // HRDLog account upload code
 	keyExtHRDLogAutoUpload = "extsvc.hrdlog.auto_upload"
 	keyExtHRDLogUploadMode = "extsvc.hrdlog.upload_mode"
+	keyExtHRDLogOnAir      = "extsvc.hrdlog.on_air" // publish frequency/mode/rig live on hrdlog.net
 
 	keyExtEQSLUsername   = "extsvc.eqsl.username"
 	keyExtEQSLPassword   = "extsvc.eqsl.password"
@@ -9912,7 +9913,7 @@ func (a *App) loadExternalServices() extsvc.ExternalServices {
 		keyExtLoTWUploadFlag, keyExtLoTWUploadFlags, keyExtLoTWWriteLog,
 		keyExtLoTWAutoUpload, keyExtLoTWUploadMode,
 		keyExtLoTWUsername, keyExtLoTWWebPassword,
-		keyExtHRDLogCallsign, keyExtHRDLogCode, keyExtHRDLogAutoUpload, keyExtHRDLogUploadMode,
+		keyExtHRDLogCallsign, keyExtHRDLogCode, keyExtHRDLogAutoUpload, keyExtHRDLogUploadMode, keyExtHRDLogOnAir,
 		keyExtEQSLUsername, keyExtEQSLPassword, keyExtEQSLQTHNick, keyExtEQSLAutoUpload, keyExtEQSLUploadMode,
 		keyExtCloudlogURL, keyExtCloudlogAPIKey, keyExtCloudlogStationID,
 		keyExtCloudlogAutoUpload, keyExtCloudlogUploadMode, keyExtDeleteRemote)
@@ -9966,6 +9967,7 @@ func (a *App) loadExternalServices() extsvc.ExternalServices {
 		Code:       m[keyExtHRDLogCode],
 		AutoUpload: m[keyExtHRDLogAutoUpload] == "1",
 		UploadMode: extsvc.UploadMode(m[keyExtHRDLogUploadMode]),
+		OnAir:      m[keyExtHRDLogOnAir] == "1",
 	}
 	// Default the HRDLog callsign to the active profile's call when unset.
 	if out.HRDLog.Callsign == "" && a.profiles != nil {
@@ -10095,6 +10097,7 @@ func (a *App) SaveExternalServices(cfg extsvc.ExternalServices) error {
 		keyExtHRDLogCode:       strings.TrimSpace(cfg.HRDLog.Code),
 		keyExtHRDLogAutoUpload: hlAuto,
 		keyExtHRDLogUploadMode: hlMode,
+		keyExtHRDLogOnAir:      boolStr(cfg.HRDLog.OnAir),
 
 		keyExtEQSLUsername:   strings.ToUpper(strings.TrimSpace(cfg.EQSL.Username)),
 		keyExtEQSLPassword:   cfg.EQSL.Password,