revert(icom): drop the PTT+split strip — MOX and SPLIT already live below

Added on a report that they were missing; they were below the fold, not
absent. The useful parts stay: the MOX button routes the PC microphone on a
network station, split aligns the TX VFO's mode, and SetIcomSplitOffset
remains available for a future use.

changelog.json

@@ -29,8 +29,7 @@
       "Icom console: the SUB display shows the sub receiver’s frequency at all times (it was blank until split), and engaging split copies the mode to the TX VFO so it matches the main.",
       "Icom network audio: the stream now opens regardless of the speaker choice — speakers-off (or a failed output device) was silently disabling the whole stream: no audio session, no recordings, no voice keyer, despite the RX-audio option being ticked.",
       "Icom network: a radio in standby keeps its session and the console’s ON button — the quiet-CI-V recovery was tearing the session down every 15 s, so a radio that was off when OpsLog started could never be powered on.",
-      "Icom console: PTT and Split move up under the dial — one PTT button, and Split as OFF/+1k/+5k/+10k, DXpedition style. Engaging split also aligns the TX VFO’s mode with the main.",
+      "Icom console: the MOX button carries your microphone on a network station, and engaging split aligns the TX VFO’s mode with the main.",
-      "Icom console: the PTT button carries your microphone on a network station — it used to only key the rig, which transmitted silence over the LAN.",
       "Icom console: the spectrum scope is removed. Every model streams its waveform differently — and on the IC-7760 enabling it killed the whole CI-V link, audio included. The radio’s own scope does it better.",
       "Icom: any leftover waveform stream is switched off at connect — the scope flag lives in the radio and survived sessions, and its flood is what was killing the IC-7760’s CI-V link."
     ],
@@ -61,8 +60,7 @@
       "Console Icom : l’affichage SUB montre la fréquence du sub receiver en permanence (il restait vide hors split), et activer le split copie le mode sur le VFO TX pour qu’il suive le main.",
       "Audio réseau Icom : le flux s’ouvre désormais indépendamment du choix d’écoute — enceintes coupées (ou périphérique de sortie en échec) désactivait silencieusement tout le flux : pas de session audio, ni enregistrements, ni voice keyer, malgré la case RX audio cochée.",
       "Réseau Icom : une radio en veille garde sa session et le bouton ON de la console — la récupération du CI-V muet détruisait la session toutes les 15 s, donc une radio éteinte au lancement d’OpsLog ne pouvait jamais être allumée.",
-      "Console Icom : le PTT et le Split remontent sous le cadran — un bouton PTT, et le Split en OFF/+1k/+5k/+10k, façon DXpedition. Activer le split aligne aussi le mode du VFO TX sur le main.",
+      "Console Icom : le bouton MOX emporte votre micro sur une station réseau, et activer le split aligne le mode du VFO TX sur le main.",
-      "Console Icom : le bouton PTT emporte votre micro sur une station réseau — il ne faisait que keyer la radio, ce qui émettait du silence par le LAN.",
       "Console Icom : le scope spectral est retiré. Chaque modèle streame sa forme d’onde différemment — et sur l’IC-7760 son activation tuait tout le lien CI-V, audio compris. Le scope de la radio fait ça mieux.",
       "Icom : tout flux waveform résiduel est coupé à la connexion — le drapeau scope vit dans la radio et survivait aux sessions, et son flot est ce qui tuait le lien CI-V de l’IC-7760."
     ]

frontend/src/components/IcomPanel.tsx

@@ -5,7 +5,7 @@ import {
   IcomSetAFGain, IcomSetRFGain, IcomSetNB, IcomSetNBLevel, IcomSetNR, IcomSetNRLevel,
   IcomSetANF, IcomSetAPF, IcomSetAGC, IcomSetPreamp, IcomSetAtt, IcomSetFilter,
   AudioMonitorActive, AudioStartMonitor, AudioStopMonitor,
-  IcomSetRFPower, IcomSetMicGain, IcomSetSplit, IcomSetSplitOffset, IcomTune, IcomConsolePTT,
+  IcomSetRFPower, IcomSetMicGain, IcomSetSplit, IcomTune, IcomConsolePTT,
   GetCATState, SetCATFrequency, SetCATMode,
   IcomSetRIT, IcomSetRITOn, IcomSetXITOn,
   IcomSetAntenna, IcomSetPBTInner, IcomSetPBTOuter, IcomSetManualNotch, IcomSetNotchPos,
@@ -508,29 +508,6 @@ export function IcomPanel({ onReportRST, isNetwork = false }: { onReportRST?: (r
             );
           })}
         </div>
-        {/* PTT + split, at the operator's hand under the dial — the Transmit
-            card lower down kept these below the fold, and a console whose PTT
-            needs scrolling is not a console. */}
-        <div className="flex items-center gap-1.5 border-t border-border/60 px-2 py-1.5">
-          <button type="button" onClick={toggleMox}
-            className={cn('flex-1 px-3 py-1.5 rounded-md text-xs font-black tracking-wider border transition-colors',
-              tx ? 'bg-destructive border-destructive text-destructive-foreground animate-pulse' : 'bg-card text-foreground border-border hover:bg-muted')}>
-            {tx ? 'TX ON' : 'PTT'}
-          </button>
-          <span className="text-[10px] font-bold uppercase tracking-wider text-muted-foreground pl-1">Split</span>
-          <button type="button" onClick={() => set({ split: false }, () => IcomSetSplit(false))}
-            className={cn('px-2 py-1.5 rounded-md text-[11px] font-bold border transition-colors',
-              !st.split ? 'bg-primary text-primary-foreground border-primary' : 'bg-card text-muted-foreground border-border hover:bg-muted')}>
-            OFF
-          </button>
-          {[1, 5, 10].map((k) => (
-            <button key={k} type="button" onClick={() => set({ split: true }, () => IcomSetSplitOffset(k * 1000))}
-              className={cn('px-2 py-1.5 rounded-md text-[11px] font-bold border transition-colors',
-                st.split ? 'bg-card text-foreground border-border hover:bg-muted' : 'bg-card text-muted-foreground border-border hover:bg-muted')}>
-              +{k}k
-            </button>
-          ))}
-        </div>
       </div>
 
       {/* Live meters — always visible: S (RX, click → RST), Po in watts, SWR. */}