Show recorded match score totals with legacy fallback (Refs #147)

src/routes/matches/[id]/+page.svelte

@@ -24,15 +24,19 @@
               : match.game.toUpperCase()
     );
     const number = new Intl.NumberFormat('en-US');
-    const stats = [
+    const hasScoreTotals = $derived(match.players.some((player) => player.scoreTotal != null));
+    const stats = $derived([
         { key: 'highestRound', label: 'Highest round' },
         { key: 'kills', label: 'Kills' },
         { key: 'headshots', label: 'Headshots' },
         { key: 'revives', label: 'Revives' },
         { key: 'downs', label: 'Downs' },
         { key: 'roundsSurvived', label: 'Rounds survived' },
-        { key: 'bestScore', label: 'Highest reported score' }
-    ] as const;
+        {
+            key: hasScoreTotals ? 'scoreTotal' : 'bestScore',
+            label: hasScoreTotals ? 'Total score' : 'Highest reported score'
+        }
+    ] as const);
 </script>
 
 <svelte:head><title>{match.map} · Match #{match.id} · Electric Cherry</title></svelte:head>
@@ -122,6 +126,11 @@
             <p>
                 Every recorded player, including those absent from the final report. Stats are the
                 highest reported counters for this match.
+                {#if hasScoreTotals}
+                    Total score is the highest recorded cumulative points earned in this match.
+                {:else}
+                    Highest reported score is the highest recorded points balance.
+                {/if}
             </p>
         </div>
         {#if match.players.length === 0}
@@ -161,7 +170,7 @@
                                     >{#if !player.hasStats}<small>No stats recorded</small>{/if}</td
                                 >
                                 {#each stats as stat}<td class:round={stat.key === 'highestRound'}
-                                        >{player[stat.key] === null
+                                        >{player[stat.key] == null
                                             ? '—'
                                             : number.format(player[stat.key]!)}</td
                                     >{/each}
@@ -178,11 +187,20 @@
 
     <details class="note">
         <summary>About these results</summary>
-        <p>
-            Kills, headshots, revives, downs, and score retain each player's highest reported value.
-            Highest reported score is a points balance, not total points earned or necessarily the
-            final score.
-        </p>
+        <p>Kills, headshots, revives, and downs retain each player's highest reported value.</p>
+        {#if hasScoreTotals}
+            <p>
+                Total score is the highest recorded cumulative points earned in this match. Players
+                absent from the final report retain their latest recorded total. A dash in Total
+                score means no total was recorded for that player.
+            </p>
+        {:else}
+            <p>
+                Highest reported score is a points balance, not total points earned or necessarily
+                the final score. This match has no recorded totals, so each player's highest
+                reported balance is shown.
+            </p>
+        {/if}
         <p>
             Highest round includes late joins. Rounds survived counts only observed round
             progression while the player was present. “At match end” means the player appeared in