feat(百家乐): 记录AI小班长每局决策日志到 daily 日志文件

- 新增 Log::channel('daily')->info() 记录：局次ID、决策来源（AI预测/本地兜底）、AI预测结果、最终下注方向、下注金额、路单序列

app/Jobs/AiBaccaratBetJob.php

@@ -30,6 +30,7 @@ use Illuminate\Foundation\Bus\Dispatchable;
 use Illuminate\Queue\InteractsWithQueue;
 use Illuminate\Queue\SerializesModels;
 use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Log;
 use Illuminate\Support\Facades\Redis;
 
 class AiBaccaratBetJob implements ShouldQueue
@@ -93,10 +94,13 @@ class AiBaccaratBetJob implements ShouldQueue
 
         // 5. 优先调用 AI 接口预测下注方向
         $predictionService = app(BaccaratPredictionService::class);
-        $betType = $predictionService->predict($recentResults);
+        $aiPrediction = $predictionService->predict($recentResults);
+        $decisionSource = 'ai';
+        $betType = $aiPrediction;
 
         // AI 不可用时回退本地路单决策（保底逻辑）
         if ($betType === null) {
+            $decisionSource = 'local';
             $bigCount = count(array_filter($recentResults, fn (string $r) => $r === 'big'));
             $smallCount = count(array_filter($recentResults, fn (string $r) => $r === 'small'));
 
@@ -113,6 +117,17 @@ class AiBaccaratBetJob implements ShouldQueue
             }
         }
 
+        // 记录 AI 小班长本次决策日志
+        $labelMap = ['big' => '大', 'small' => '小', 'triple' => '豹子'];
+        Log::channel('daily')->info('AI小班长百家乐决策', [
+            'round_id' => $round->id,
+            'decision_source' => $decisionSource === 'ai' ? 'AI接口预测' : '本地路单兜底',
+            'ai_prediction' => $aiPrediction ? $labelMap[$aiPrediction] : 'null（不可用）',
+            'final_bet' => $labelMap[$betType] ?? $betType,
+            'bet_amount' => $amount,
+            'roadmap_20' => implode('→', array_map(fn (string $r) => $labelMap[$r] ?? $r, array_reverse($recentResults))),
+        ]);
+
         // 5. 执行下注 (同 BaccaratController::bet 逻辑)
         DB::transaction(function () use ($user, $round, $betType, $amount, $currency) {
             // 幂等：同一局只能下一注