[fix](ftx): treat second callsign as source in directed traffic

src/trx-client/trx-frontend/trx-frontend-http/assets/web/plugins/ft8.js

@@ -168,17 +168,35 @@ function extractAllGrids(message) {
 }
 
 function extractLikelyCallsign(message) {
-  const parts = String(message || "").toUpperCase().split(/[^A-Z0-9/]+/);
-  for (const token of parts) {
-    if (!token) continue;
-    if (token.length < 3 || token.length > 12) continue;
-    if (token === "CQ" || token === "DE" || token === "QRZ" || token === "DX") continue;
-    if (isMaidenheadGridToken(token)) continue;
-    if (/^[A-Z0-9/]{1,5}\d[A-Z0-9/]{1,6}$/.test(token)) return token;
+  const tokens = String(message || "")
+    .toUpperCase()
+    .split(/[^A-Z0-9/]+/)
+    .filter(Boolean);
+  if (tokens.length === 0) return null;
+  const head = tokens[0];
+  if (head === "CQ" || head === "DE" || head === "QRZ") {
+    if (isLikelyCallsignToken(tokens[1])) return tokens[1];
+    for (let i = 1; i < tokens.length; i += 1) {
+      if (isLikelyCallsignToken(tokens[i])) return tokens[i];
+    }
+    return null;
+  }
+  // Directed messages are usually "<target> <source> ...".
+  if (isLikelyCallsignToken(tokens[0]) && isLikelyCallsignToken(tokens[1])) return tokens[1];
+  for (const token of tokens) {
+    if (isLikelyCallsignToken(token)) return token;
   }
   return null;
 }
 
+function isLikelyCallsignToken(token) {
+  if (!token) return false;
+  if (token.length < 3 || token.length > 12) return false;
+  if (token === "CQ" || token === "DE" || token === "QRZ" || token === "DX") return false;
+  if (isMaidenheadGridToken(token)) return false;
+  return /^[A-Z0-9/]{1,5}\d[A-Z0-9/]{1,6}$/.test(token);
+}
+
 function isFtxFarewellToken(token) {
   const normalized = String(token || "").trim().toUpperCase();
   return normalized === "RR73" || normalized === "73" || normalized === "RR";

src/trx-server/src/pskreporter.rs

@@ -205,6 +205,12 @@ fn parse_sender_callsign_ft8(message: &str) -> Option<String> {
             }
         }
     }
+    // Directed FT8/FT4-style messages are usually "<target> <source> ...".
+    if let (Some(first), Some(second)) = (tokens.first(), tokens.get(1)) {
+        if is_callsign(first) && is_callsign(second) {
+            return Some(second.clone());
+        }
+    }
     tokens.into_iter().find(|t| is_callsign(t))
 }
 
@@ -441,6 +447,14 @@ mod tests {
             parse_sender_callsign_ft8("CQ SP2SJG JO93"),
             Some("SP2SJG".to_string())
         );
+        assert_eq!(
+            parse_sender_callsign_ft8("K1ABC SP2SJG JO93"),
+            Some("SP2SJG".to_string())
+        );
+        assert_eq!(
+            parse_sender_callsign_ft8("K1ABC SP2SJG -07"),
+            Some("SP2SJG".to_string())
+        );
         assert_eq!(parse_locator("CQ SP2SJG JO93"), Some("JO93".to_string()));
         assert_eq!(parse_locator("CQ SP2SJG RR73"), None);
         assert_eq!(parse_locator("SP2SJG RR 73"), None);