fix: when in autocall cw writing a call stop transmission

frontend/src/App.tsx

@@ -2065,8 +2065,14 @@ export default function App() {
     // applyUdpCall saw current != lastUdpCall and refused every later UDP call.
     if (opts?.force) lastUdpCallRef.current = v.trim().toUpperCase();
     // A callsign appeared (someone answered the CQ, or a spot was clicked) →
-    // stop auto-calling so we don't key over the contact.
-    if (v.trim() !== '') stopAutoCall();
+    // stop auto-calling so we don't key over the contact. If a CQ was actually
+    // in flight, abort the current transmission too so it stops IMMEDIATELY
+    // rather than finishing the buffered call. (autoCallMacroRef flips to -1 on
+    // the first keystroke, so we only abort once.)
+    if (v.trim() !== '') {
+      if (autoCallMacroRef.current !== -1) WinkeyerStop().catch(() => {});
+      stopAutoCall();
+    }
     // No-op guard: external apps (MSHV/WSJT-X) re-broadcast the same DX call
     // on every status packet. If it matches what's already in the entry,
     // do nothing — otherwise we'd re-run the QRZ lookup, hit the cache and