fix: SPLIT placed the transmitter on a stale VFO; share the meter widget

Reported on the FTDX10: listening on 14.244 with VFO B still holding 18.115 from
an earlier session, pressing SPLIT threw the transmitter onto another band. The
button only flipped the rig's split flag, and the other VFO is stale by nature —
the only transmit frequency that makes sense is one derived from where the
operator is listening NOW. SPLIT therefore places the TX VFO too: up 1 kHz on CW
and the data modes, up 5 kHz on phone, the offsets operators actually call. The
+1k / +5k buttons remain for anything else, and a test pins the mapping.

The panel also drew its own flat meters while the Flex and Icom consoles use the
shared LED-segment MeterBar. Two instrument styles in one application is just
inconsistency — it now uses the shared component, and the local one is gone.

And the three consoles are named alike: "Flex Console", "Icom Console", "Yaesu
Console", in the tabs and in the Main-view pane list, in both languages.

frontend/src/lib/i18n.tsx

@@ -106,7 +106,7 @@ const en: Dict = {
   'settings.pane.map1': 'Map — great-circle + beam', 'settings.pane.map2': 'Map — locator (street)',
   'settings.pane.cluster': 'Cluster spots', 'settings.pane.worked': 'Worked before',
   'settings.pane.recent': 'Recent QSOs', 'settings.pane.netcontrol': 'Net control',
-  'settings.pane.flex': 'FlexRadio controls', 'settings.pane.icom': 'Icom console', 'settings.pane.yaesu': 'Yaesu console', 'yaesu.notConnected': 'Yaesu CAT not connected', 'yaesu.meters': 'Meters', 'yaesu.bandMode': 'Band & mode', 'yaesu.receive': 'Receive', 'yaesu.noiseFilter': 'Noise & filter', 'yaesu.transmit': 'Transmit', 'yaesu.refresh': 'Refresh', 'yaesu.tuneHint': 'Start an antenna-tuner cycle', 'yaesu.sToRst': 'Click to fill the RST sent', 'yaesu.sidebandHint': 'Click to select this mode; click again to switch sideband (U/L)', 'yaesu.splitUpHint': 'Transmit this far above the receive frequency, and turn split on', 'yaesu.txOn': 'TX',
+  'settings.pane.flex': 'Flex Console', 'settings.pane.icom': 'Icom Console', 'settings.pane.yaesu': 'Yaesu Console', 'yaesu.notConnected': 'Yaesu CAT not connected', 'yaesu.meters': 'Meters', 'yaesu.bandMode': 'Band & mode', 'yaesu.receive': 'Receive', 'yaesu.noiseFilter': 'Noise & filter', 'yaesu.transmit': 'Transmit', 'yaesu.refresh': 'Refresh', 'yaesu.tuneHint': 'Start an antenna-tuner cycle', 'yaesu.sToRst': 'Click to fill the RST sent', 'yaesu.sidebandHint': 'Click to select this mode; click again to switch sideband (U/L)', 'yaesu.splitUpHint': 'Transmit this far above the receive frequency, and turn split on', 'yaesu.txOn': 'TX',
   'theme.auto': 'Auto (system)', 'theme.light-warm': 'Warm light', 'theme.light-cool': 'Cool light',
   'theme.light-sage': 'Sage light', 'theme.dim-slate': 'Dim slate', 'theme.dark-warm': 'Warm dark',
   'theme.dark-graphite': 'Graphite dark', 'theme.high-contrast': 'High contrast',
@@ -518,7 +518,7 @@ const fr: Dict = {
   'settings.pane.map1': 'Carte — orthodromie + faisceau', 'settings.pane.map2': 'Carte — locator (rue)',
   'settings.pane.cluster': 'Spots cluster', 'settings.pane.worked': 'Déjà contactés',
   'settings.pane.recent': 'QSO récents', 'settings.pane.netcontrol': 'Gestion de net',
-  'settings.pane.flex': 'Contrôles FlexRadio', 'settings.pane.icom': 'Console Icom', 'settings.pane.yaesu': 'Console Yaesu', 'yaesu.notConnected': 'CAT Yaesu non connecté', 'yaesu.meters': 'Mesures', 'yaesu.bandMode': 'Bande et mode', 'yaesu.receive': 'Réception', 'yaesu.noiseFilter': 'Bruit et filtre', 'yaesu.transmit': 'Émission', 'yaesu.refresh': 'Actualiser', 'yaesu.tuneHint': "Lancer un cycle d'accord d'antenne", 'yaesu.sToRst': 'Cliquer pour remplir le RST envoyé', 'yaesu.sidebandHint': 'Cliquer pour choisir ce mode ; recliquer pour changer de bande latérale (U/L)', 'yaesu.splitUpHint': "Émettre à cette distance au-dessus de la fréquence de réception, et activer le split", 'yaesu.txOn': 'TX',
+  'settings.pane.flex': 'Flex Console', 'settings.pane.icom': 'Icom Console', 'settings.pane.yaesu': 'Yaesu Console', 'yaesu.notConnected': 'CAT Yaesu non connecté', 'yaesu.meters': 'Mesures', 'yaesu.bandMode': 'Bande et mode', 'yaesu.receive': 'Réception', 'yaesu.noiseFilter': 'Bruit et filtre', 'yaesu.transmit': 'Émission', 'yaesu.refresh': 'Actualiser', 'yaesu.tuneHint': "Lancer un cycle d'accord d'antenne", 'yaesu.sToRst': 'Cliquer pour remplir le RST envoyé', 'yaesu.sidebandHint': 'Cliquer pour choisir ce mode ; recliquer pour changer de bande latérale (U/L)', 'yaesu.splitUpHint': "Émettre à cette distance au-dessus de la fréquence de réception, et activer le split", 'yaesu.txOn': 'TX',
   'theme.auto': 'Auto (système)', 'theme.light-warm': 'Clair chaud', 'theme.light-cool': 'Clair froid',
   'theme.light-sage': 'Clair sauge', 'theme.dim-slate': 'Ardoise tamisé', 'theme.dark-warm': 'Sombre chaud',
   'theme.dark-graphite': 'Sombre graphite', 'theme.high-contrast': 'Contraste élevé',