Show "Local" instead of mileage for events within 30 miles of St. Louis

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

sites/events/src/main.js

@@ -201,6 +201,13 @@ function distanceFromStLouis(ev) {
   return milesBetween(lat, lon, ST_LOUIS.lat, ST_LOUIS.lon);
 }
 
+const LOCAL_RADIUS_MILES = 30;
+
+function distanceLabel(distance) {
+  if (distance === null) return "";
+  return distance < LOCAL_RADIUS_MILES ? "Local" : `${Math.round(distance)} mi from STL`;
+}
+
 // BCP's only reliable format signal is the teamEvent flag. There's no
 // dedicated "team size" field — the closest candidate (totalPlayers /
 // totalTeamPlayers) reflects live registration progress, not the event's
@@ -296,7 +303,7 @@ function eventCard(ev, circuits) {
       <div class="card-body py-4 flex-row items-center justify-between gap-4 flex-wrap">
         <div class="min-w-0">
           <div class="font-semibold truncate">${esc(ev.name)}</div>
-          <div class="text-sm opacity-60 mt-1">${esc(locationOf(ev))}${distance !== null ? ` · ${Math.round(distance)} mi from STL` : ""}</div>
+          <div class="text-sm opacity-60 mt-1">${esc(locationOf(ev))}${distance !== null ? ` · ${distanceLabel(distance)}` : ""}</div>
           <div class="flex gap-2 mt-2 flex-wrap">${format}${scopeBadge}${circuitBadges}${system}${capacity}</div>
         </div>
         <div class="text-right shrink-0">