fix: centre the Yaesu panel like the Icom and Flex ones

Capping the width without mx-auto pinned the console to the left edge with an
empty window beside it. It now uses the exact wrapper the other two panels use —
h-full min-h-0 overflow-auto bg-background, then max-w-5xl mx-auto p-3 — rather
than a second layout of my own invention.

frontend/src/components/YaesuPanel.tsx

@@ -284,8 +284,11 @@ export function YaesuPanel({ onReportRST }: { onReportRST?: (rst: string) => voi
   }
 
   return (
-    <div className="h-full w-full overflow-auto p-3">
-      <div className="max-w-[560px] space-y-3">
+    <div className="h-full min-h-0 overflow-auto bg-background">
+      {/* Same wrapper as the Icom and Flex panels: capped width, CENTRED. Capping
+          it without mx-auto left the console pinned to the left edge with a
+          window of empty space beside it. */}
+      <div className="max-w-5xl mx-auto p-3 space-y-3">
       {/* VFO + status */}
       <div className="rounded-xl border border-border bg-card shadow-sm px-4 py-3 flex items-center justify-between gap-3 flex-wrap">
         <div>