From 22311eb01cfaf91aaa4711875d83b1d2c13b684e Mon Sep 17 00:00:00 2001
From: Stan Grams <sjg@haxx.space>
Date: Sun, 15 Mar 2026 17:09:12 +0100
Subject: [PATCH] [fix](trx-frontend-http): drop bidirectional requirement for
 decode paths
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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The bidirectional check required both A→B and B→A directed messages to
draw a contact line, which was too strict — the receiver may not hear
both sides of a QSO. Now a decode path is drawn whenever a directed
message is decoded and the target's locator is known from any message
in the 24 h history window.

Also rename "Longest QSOs" → "Longest decode paths" and update
related UI labels to better reflect what is actually shown.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
---
 .../trx-frontend/trx-frontend-http/assets/web/app.js        | 4 ----
 .../trx-frontend/trx-frontend-http/assets/web/index.html    | 6 +++---
 2 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/app.js b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/app.js
index d2607f1..b4ee328 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/app.js
+++ b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/app.js
@@ -6319,11 +6319,7 @@ function rebuildDecodeContactPaths() {
       }
     }
   }
-  // Index directed messages by "SOURCE::TARGET" for QSO (bidirectional) check
-  const directedPairs = new Set(directedMessages.map((m) => `${m.source}::${m.target}`));
   for (const msg of directedMessages) {
-    // A true QSO requires both A→B and B→A directed messages
-    if (!directedPairs.has(`${msg.target}::${msg.source}`)) continue;
     const targetLocator = stationLocators.get(msg.target);
     if (!targetLocator) continue;
     if (msg.sourceGrid === targetLocator.grid) continue;
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
index 27e271a..daf6944 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
+++ b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
@@ -752,7 +752,7 @@
             <div class="map-locator-phase-row">
               <button type="button" id="map-p2p-paths-toggle" class="map-locator-phase-btn">TRX Paths On</button>
               <button type="button" id="map-contact-paths-toggle" class="map-locator-phase-btn">Contact Paths On</button>
-              <span class="map-locator-empty">TRX paths on popup, directed contact paths when both locators are known</span>
+              <span class="map-locator-empty">TRX paths on popup, directed decode paths when target locator is known</span>
             </div>
           </div>
         </div>
@@ -766,8 +766,8 @@
       <section class="map-qso-summary" aria-labelledby="map-qso-summary-title">
         <div class="map-qso-summary-head">
           <div>
-            <div id="map-qso-summary-title" class="map-qso-summary-title">Longest QSOs</div>
-            <div class="map-qso-summary-subtitle">Top 5 directed decode contacts in the current map view</div>
+            <div id="map-qso-summary-title" class="map-qso-summary-title">Longest decode paths</div>
+            <div class="map-qso-summary-subtitle">Top 5 directed decode paths in the current map view</div>
           </div>
         </div>
         <div id="map-qso-summary-list" class="map-qso-summary-list"></div>