lap awards: 🥇 PR rows highlighted, 🏆 route lap-best, no awards on partial laps

frontend/src/components/activity/LapTable.jsx

@@ -2,9 +2,28 @@ import { formatDuration, formatDistance, formatPace, formatHeartRate, formatCade
 
 const RUNNING_TYPES = new Set(['running', 'hiking', 'walking'])
 
-export default function LapTable({ laps, sportType, lapBests }) {
+// Most common lap distance (rounded to 100 m), used to tell "whole" laps from
+// the short trailing fragment that auto-lapping leaves at the end of a run.
+function modalDistance(laps) {
+  const counts = {}
+  for (const l of laps) {
+    if (l.distance_m == null) continue
+    const key = Math.round(l.distance_m / 100) * 100
+    counts[key] = (counts[key] || 0) + 1
+  }
+  let best = null, bestN = 0
+  for (const [k, n] of Object.entries(counts)) {
+    if (n > bestN) { bestN = n; best = Number(k) }
+  }
+  return best
+}
+
+export default function LapTable({ laps, sportType, lapBests, records }) {
   const showPower = !RUNNING_TYPES.has(sportType?.toLowerCase())
   const hasBests = lapBests && Object.keys(lapBests).length > 0
+  const modal = modalDistance(laps)
+  const prs = records || []
+  const showLegend = hasBests || prs.length > 0
   return (
     <div className="overflow-x-auto">
       <table className="w-full text-sm">
@@ -23,22 +42,43 @@ export default function LapTable({ laps, sportType, lapBests }) {
         </thead>
         <tbody>
           {laps.map((lap) => {
-            const best = hasBests ? lapBests[String(lap.lap_number)] : null
+            // Only "whole" laps (within 10% of the typical lap distance) are
+            // eligible for awards — a 10 m trailing fragment isn't a real lap.
+            const isWhole = lap.distance_m != null && modal != null && lap.distance_m >= modal * 0.9
+            const best = hasBests && isWhole ? lapBests[String(lap.lap_number)] : null
             const delta = best != null && lap.duration_s != null ? lap.duration_s - best : null
-            const isBest = delta != null && delta <= 0.5
+            const isLapBest = delta != null && delta <= 0.5
+            // A personal record set on this lap: a standard-distance PR whose
+            // distance and time line up with this lap.
+            const isPR = isWhole && lap.duration_s != null && prs.some(r =>
+              r.distance_m != null && Math.abs(lap.distance_m - r.distance_m) <= r.distance_m * 0.05 &&
+              Math.abs(lap.duration_s - r.duration_s) <= 2
+            )
             return (
-              <tr key={lap.lap_number} className="border-b border-gray-800/50 hover:bg-gray-800/30 transition-colors">
-                <td className="py-2 text-gray-400">{lap.lap_number}</td>
+              <tr
+                key={lap.lap_number}
+                className={`border-b transition-colors ${
+                  isPR
+                    ? 'bg-yellow-500/10 border-yellow-500/30 hover:bg-yellow-500/15'
+                    : 'border-gray-800/50 hover:bg-gray-800/30'
+                }`}
+              >
+                <td className="py-2 text-gray-400">
+                  <span className="inline-flex items-center gap-1">
+                    {lap.lap_number}
+                    {isPR && <span title="Personal best">🥇</span>}
+                  </span>
+                </td>
                 <td className="py-2 text-right text-gray-200">{formatDistance(lap.distance_m)}</td>
-                <td className={`py-2 text-right ${isBest ? 'text-yellow-400 font-semibold' : 'text-gray-200'}`}>{formatDuration(lap.duration_s)}</td>
+                <td className={`py-2 text-right ${isPR || isLapBest ? 'text-yellow-400 font-semibold' : 'text-gray-200'}`}>{formatDuration(lap.duration_s)}</td>
                 {hasBests && (
                   <td className="py-2 text-right font-mono text-gray-500">{best != null ? formatDuration(best) : '--'}</td>
                 )}
                 {hasBests && (
                   <td className={`py-2 text-right font-mono ${
-                    delta == null ? 'text-gray-700' : isBest ? 'text-yellow-400' : delta < 0 ? 'text-green-400' : 'text-red-400'
+                    delta == null ? 'text-gray-700' : isLapBest ? 'text-yellow-400' : delta < 0 ? 'text-green-400' : 'text-red-400'
                   }`}>
-                    {delta == null ? '--' : isBest ? '🏆' : `${delta > 0 ? '+' : '−'}${formatDuration(Math.abs(delta))}`}
+                    {delta == null ? '--' : isLapBest ? <span title="Fastest on this route">🏆</span> : `${delta > 0 ? '+' : '−'}${formatDuration(Math.abs(delta))}`}
                   </td>
                 )}
                 <td className="py-2 text-right text-gray-200">{formatPace(lap.avg_speed_ms, sportType)}</td>
@@ -58,6 +98,12 @@ export default function LapTable({ laps, sportType, lapBests }) {
           })}
         </tbody>
       </table>
+      {showLegend && (
+        <div className="flex flex-wrap gap-x-4 gap-y-1 mt-3 text-xs text-gray-500">
+          {prs.length > 0 && <span>🥇 Personal best for the distance</span>}
+          {hasBests && <span>🏆 Fastest time for this lap on the route</span>}
+        </div>
+      )}
     </div>
   )
 }

frontend/src/pages/ActivityDetailPage.jsx

@@ -335,7 +335,7 @@ export default function ActivityDetailPage() {
           {laps && laps.length > 0 && (
             <div className="flex-1 min-w-[300px] bg-gray-900 rounded-xl border border-gray-800 p-4">
               <h3 className="text-sm font-medium text-gray-300 mb-3">Laps</h3>
-              <LapTable laps={laps} sportType={activity.sport_type} lapBests={lapBests} />
+              <LapTable laps={laps} sportType={activity.sport_type} lapBests={lapBests} records={activityRecords} />
             </div>
           )}
           {routeBoard && routeBoard.top?.length > 0 && (