fix(ticket): 修正 full_play/half_play/reverse 投注模式的金额计算逻辑

统一通过 $amountModePlayCode 映射选择类型到正确的金额模式：
- reverse / half_play / full_play 使用 ibox 模式（单注 × 组合数）
- full_cover 使用 mbox 模式（总金额平摊）
- straight 保持原有 play_code 规则

app/Services/Ticket/PlayRuleEngine.php

@@ -59,8 +59,17 @@ final class PlayRuleEngine
             throw new TicketOperationException('full_cover_amount_not_divisible', ErrorCode::BetInvalidPlayInput->value);
         }
 
-        $unitBetAmount = $this->resolveUnitBetAmount($selectionType === 'full_cover' ? 'mbox' : $playCode, $amount, $combinationCount);
-        $totalBetAmount = $this->resolveTotalBetAmount($selectionType === 'full_cover' ? 'mbox' : $playCode, $amount, $unitBetAmount, $combinationCount);
+        // 种类金额模式：
+        // - full_cover（全保）→ 总金额平摊（mbox）
+        // - reverse / half_play / full_play → 单注 × 组合数（ibox）
+        // - straight → 沿用 play_code 自身规则
+        $amountModePlayCode = match ($selectionType) {
+            'full_cover' => 'mbox',
+            'full_play', 'reverse', 'half_play' => 'ibox',
+            default => $playCode,
+        };
+        $unitBetAmount = $this->resolveUnitBetAmount($amountModePlayCode, $amount, $combinationCount);
+        $totalBetAmount = $this->resolveTotalBetAmount($amountModePlayCode, $amount, $unitBetAmount, $combinationCount);
         $dimensionInt = $this->toDimensionInt(is_string($dimension) ? $dimension : null, $playConfig);
         $primaryOdds = $this->pickPrimaryOdds($oddsItems);
         $rebateRate = (float) $primaryOdds->rebate_rate;