From c267e58418f3c2a28bce0cb54c6eba3e05c725fb Mon Sep 17 00:00:00 2001
From: you <you@example.com>
Date: Sun, 22 Mar 2026 23:59:33 +0000
Subject: [PATCH] Fix: sort regional candidates by distance to IATA center
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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Without sender GPS (channel texts etc), the forward pass had no
anchor and just took candidates[0] — random order. Now regional
candidates are sorted by distKm to observer IATA center before
disambiguation. Closest to region center = default pick.
---
 public/hop-resolver.js | 1 +
 public/index.html      | 2 +-
 server.js              | 2 ++
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/public/hop-resolver.js b/public/hop-resolver.js
index 8cad87f0..8497a047 100644
--- a/public/hop-resolver.js
+++ b/public/hop-resolver.js
@@ -106,6 +106,7 @@ window.HopResolver = (function() {
           return { ...c, regional: r ? r.near : false, filterMethod: r ? r.method : 'none', distKm: r ? r.distKm : undefined };
         });
         const regional = checked.filter(c => c.regional);
+        regional.sort((a, b) => (a.distKm || 9999) - (b.distKm || 9999));
         const candidates = regional.length > 0 ? regional : checked;
         const globalFallback = regional.length === 0 && checked.length > 0 && packetIata != null;
 
diff --git a/public/index.html b/public/index.html
index 1e1892b0..2e590ba4 100644
--- a/public/index.html
+++ b/public/index.html
@@ -82,7 +82,7 @@
   <script src="vendor/qrcode.js"></script>
   <script src="roles.js?v=1774325000"></script>
   <script src="region-filter.js?v=1774325000"></script>
-  <script src="hop-resolver.js?v=1774223254"></script>
+  <script src="hop-resolver.js?v=1774223973"></script>
   <script src="hop-display.js?v=1774221932"></script>
   <script src="app.js?v=1774126708"></script>
   <script src="home.js?v=1774042199"></script>
diff --git a/server.js b/server.js
index e5773075..d331b100 100644
--- a/server.js
+++ b/server.js
@@ -2097,6 +2097,8 @@ app.get('/api/resolve-hops', (req, res) => {
         return { ...c, regional: r.near, filterMethod: r.method, distKm: r.distKm };
       });
       const regional = checked.filter(c => c.regional);
+      // Sort by distance to region center — closest first
+      regional.sort((a, b) => (a.distKm || 9999) - (b.distKm || 9999));
       const candidates = regional.length > 0 ? regional : checked;
       const globalFallback = regional.length === 0 && checked.length > 0;