feat: Flexradio/Icom, click on signal to fill the RST tx

frontend/src/App.tsx

@@ -3006,7 +3006,8 @@ export default function App() {
       case 'flex':
         return (
           <div className="h-full w-full min-h-0 rounded-lg overflow-hidden border border-border">
-            <FlexPanel onCWSpeed={(w) => { setWkWpm(w); WinkeyerSetSpeed(w).catch(() => {}); saveWk({ wpm: w }); }} />
+            <FlexPanel onCWSpeed={(w) => { setWkWpm(w); WinkeyerSetSpeed(w).catch(() => {}); saveWk({ wpm: w }); }}
+              onReportRST={(r) => { setRstSent(r); rstUserEditedRef.current = true; }} />
           </div>
         );
       case 'recent':
@@ -4069,7 +4070,8 @@ export default function App() {
                 backend is a FlexRadio. */}
             {catState.backend === 'flex' && (
               <TabsContent value="flex" className="flex-1 min-h-0 p-0">
-                <FlexPanel onCWSpeed={(w) => { setWkWpm(w); WinkeyerSetSpeed(w).catch(() => {}); saveWk({ wpm: w }); }} />
+                <FlexPanel onCWSpeed={(w) => { setWkWpm(w); WinkeyerSetSpeed(w).catch(() => {}); saveWk({ wpm: w }); }}
+              onReportRST={(r) => { setRstSent(r); rstUserEditedRef.current = true; }} />
               </TabsContent>
             )}
 
@@ -4077,7 +4079,7 @@ export default function App() {
                 is an Icom. */}
             {catState.backend === 'icom' && (
               <TabsContent value="icom" className="flex-1 min-h-0 p-0">
-                <IcomPanel />
+                <IcomPanel onReportRST={(r) => { setRstSent(r); rstUserEditedRef.current = true; }} />
               </TabsContent>
             )}