fix: delete elo snapshots before deleting duplicate players during merge

src/app/api/admin/players/merge/route.ts

@@ -228,6 +228,14 @@ export async function POST(request: Request) {
     await Promise.all(updates);
     console.log(`Updated foreign key references`);
 
+    // Delete elo snapshots for duplicate players (they will be recalculated anyway)
+    for (const dupPlayer of duplicatePlayers) {
+      await prisma.eloSnapshot.deleteMany({
+        where: { playerId: dupPlayer.id },
+      });
+    }
+    console.log(`Deleted elo snapshots for ${duplicatePlayers.length} duplicate players`);
+
     // Delete duplicate players
     for (const dupPlayer of duplicatePlayers) {
       await prisma.player.delete({