feat: HAMLOG.online upload and confirmations, Yaesu antenna, a named port holder

HAMLOG.online is a seventh external service: one API key, one ADIF record per
QSO, immediate / delayed / on-close like the rest. They publish no API
documentation, so the protocol is read from THEIR OWN client — the HAMLOG Agent
(github.com/hamlogonline/Agent), which is the authoritative source short of
asking them:

	POST https://hamlog.online/api/agent/
	{"ADIFADD": {"APIKEY": k, "ADIFDATA": record}}   → {"STATUS":"OK"}
	{"KEYSTATUS": {"APIKEY": k}}                     → {"STATUS":"OK","CALLSIGN":…}

Success is STATUS == OK, not "no ERROR field": their failure carries ERROR and
no STATUS, and reading an unknown reply — a proxy page, a maintenance notice —
as an acceptance is how a contact goes missing without anyone noticing.

KEYSTATUS buys something no other service here offers: the key can be checked
BEFORE the first QSO, and the answer names the account. A key pasted from
another callsign is caught in the settings panel rather than through a week of
silent refusals.

Their confirmations are also an award source now, ticked like LoTW rather than
expressed through "custom". It reads the ADIF extras, not a column: the standard
names a field for hamlog.EU and none for hamlog.ONLINE, and borrowing the other
site's field would write a falsehood into every exported log. Three plausible
key names from their own export are accepted too, so nobody has to rename a
column by hand after an export.

Yaesu gains antenna selection (AN), remembered per band — the antenna picked on
a band comes back with it, with no table to fill in anywhere. Rigs with one
socket never answer AN and never show the row; the log says which case it is.

And a serial port that is refused now names its likely holder. OmniRig stays
resident once activated and keeps the port of the rig configured in it, so a
native backend never gets it — "Serial port busy" alone accused nobody, and an
FTDX10 spent a morning being blamed for it.

internal/extsvc/manager.go

@@ -139,6 +139,7 @@ func (m *Manager) SetConfig(cfg ExternalServices) {
 	cfg.HRDLog = cfg.HRDLog.normalised()
 	cfg.EQSL = cfg.EQSL.normalised()
 	cfg.Cloudlog = cfg.Cloudlog.normalised()
+	cfg.Hamlog = cfg.Hamlog.normalised()
 	m.cfg = cfg
 
 	// Summary of what is armed, written at startup and on every settings save.
@@ -152,6 +153,7 @@ func (m *Manager) SetConfig(cfg ExternalServices) {
 	}{
 		{"qrz", cfg.QRZ}, {"clublog", cfg.Clublog}, {"lotw", cfg.LoTW},
 		{"hrdlog", cfg.HRDLog}, {"eqsl", cfg.EQSL}, {"cloudlog", cfg.Cloudlog},
+		{"hamlog", cfg.Hamlog},
 	} {
 		if s.cfg.AutoUpload {
 			on = append(on, fmt.Sprintf("%s(%s)", s.name, s.cfg.UploadMode))
@@ -227,6 +229,14 @@ func (m *Manager) OnQSOLogged(id int64) {
 			m.route(ServiceCloudlog, id, c)
 		}
 	}
+	// HAMLOG.online — one API key and nothing else to get wrong.
+	if h := cfg.Hamlog; h.AutoUpload {
+		if h.APIKey == "" {
+			m.logf("extsvc: hamlog auto-upload is ON but no API key is set (QSO %d not sent)", id)
+		} else {
+			m.route(ServiceHamlog, id, h)
+		}
+	}
 }
 
 // route sends a logged QSO down the configured timing path: queue it for the
@@ -277,6 +287,9 @@ func (m *Manager) onCloseServices() []Service {
 	if c := cfg.Cloudlog; c.AutoUpload && c.UploadMode == ModeOnClose && c.URL != "" && c.APIKey != "" && c.StationID != "" {
 		out = append(out, ServiceCloudlog)
 	}
+	if h := cfg.Hamlog; h.AutoUpload && h.UploadMode == ModeOnClose && h.APIKey != "" {
+		out = append(out, ServiceHamlog)
+	}
 	return out
 }
 
@@ -323,6 +336,8 @@ func (m *Manager) FlushOnClose() int {
 			uploaded += m.flushOneByOne(svc, ids, cfg.HRDLog)
 		case ServiceCloudlog:
 			uploaded += m.flushOneByOne(svc, ids, cfg.Cloudlog)
+		case ServiceHamlog:
+			uploaded += m.flushOneByOne(svc, ids, cfg.Hamlog)
 		}
 	}
 	return uploaded
@@ -644,6 +659,16 @@ func (m *Manager) upload(svc Service, id int64, cfg ServiceConfig) (ok bool, ret
 			return false, false
 		}
 		res, err = UploadCloudlog(ctx, m.deps.Client, cfg, record)
+	case ServiceHamlog:
+		// The station callsign is whatever the QSO carries: HAMLOG files the
+		// contact under the account the API key belongs to, and KEYSTATUS is how
+		// the operator checks that account is the right one.
+		record, ok := m.deps.BuildADIF(id, "")
+		if !ok {
+			m.logf("extsvc: %s upload of QSO %d skipped (no record)", svc, id)
+			return false, false
+		}
+		res, err = UploadHamlog(ctx, m.deps.Client, cfg, record)
 	default:
 		return false, false
 	}