Fix horse race seed pool payouts

app/Jobs/CloseHorseRaceJob.php

@@ -70,6 +70,7 @@ class CloseHorseRaceJob implements ShouldQueue
 
         $config = GameConfig::forGame('horse_racing')?->params ?? [];
         $houseTake = (int) ($config['house_take_percent'] ?? 5);
+        $seedPool = (int) ($config['seed_pool'] ?? 0);
         $winnerId = (int) $race->winner_horse_id;
 
         // 按马匹统计各匹下注金额
@@ -82,7 +83,7 @@ class CloseHorseRaceJob implements ShouldQueue
 
         $totalPool = array_sum($horsePools);
         $winnerPool = (int) ($horsePools[$winnerId] ?? 0);
-        $netPool = (int) ($totalPool * (1 - $houseTake / 100));
+        $distributablePool = HorseRace::calcDistributablePool($horsePools, $houseTake, $seedPool, $winnerPool);
 
         // 结算：遍历所有下注记录
         $bets = HorseBet::query()
@@ -93,7 +94,7 @@ class CloseHorseRaceJob implements ShouldQueue
 
         $totalPayout = 0;
 
-        DB::transaction(function () use ($bets, $winnerId, $netPool, $winnerPool, $currency, &$totalPayout) {
+        DB::transaction(function () use ($bets, $winnerId, $distributablePool, $winnerPool, $currency, &$totalPayout) {
             foreach ($bets as $bet) {
                 if ((int) $bet->horse_id !== $winnerId) {
                     // 未中奖（本金已在下注时扣除）
@@ -104,7 +105,7 @@ class CloseHorseRaceJob implements ShouldQueue
 
                 // 中奖：按注额比例分配净注池
                 if ($winnerPool > 0) {
-                    $payout = (int) round($netPool * ($bet->amount / $winnerPool));
+                    $payout = (int) round($distributablePool * ($bet->amount / $winnerPool));
                 } else {
                     $payout = 0;
                 }