fix(icom): needle inertia for the TX meters, and room for three digits

The CI-V meters are point samples: between two SSB syllables a poll lands on
0 W and a perfect SWR, so a 150 W transmission read 0-10 W most of the time
and the SWR sat at 1.0. Power now decays like a needle and SWR holds its peak
then snaps to the live value — the same meterPeak the Yaesu and Kenwood
consoles already use. The readout column also widens so '180 W' stays on one
line.

frontend/src/components/IcomPanel.tsx

@@ -270,7 +270,7 @@ function Meter({ label, value, accent, scale, onClick, title }: { label: string;
       <div className="flex-1 h-2.5 rounded-full bg-muted/60 overflow-hidden">
         <div className="h-full rounded-full transition-[width] duration-150" style={{ width: `${v}%`, background: accent }} />
       </div>
-      <span className="w-10 text-right text-[11px] font-mono tabular-nums text-muted-foreground">{scale ?? v}</span>
+      <span className="w-14 shrink-0 whitespace-nowrap text-right text-[11px] font-mono tabular-nums text-muted-foreground">{scale ?? v}</span>
     </>
   );
   if (onClick) {