fix:바로빌 계좌/카드 조회 API 응답 로깅 추가

- 디버깅을 위한 API 응답 상세 로깅 추가
- 데이터 타입 및 실제 응답 내용 로그 기록

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/Services/Barobill/BarobillUsageService.php

@@ -178,6 +178,15 @@ protected function getBankAccountCount(BarobillMember $member, string $startDate
         try {
             $result = $this->barobillService->getBankAccounts($member->biz_no, true);
 
+            Log::info('계좌 조회 API 응답', [
+                'member_id' => $member->id,
+                'biz_no' => $member->biz_no,
+                'server_mode' => $member->server_mode,
+                'success' => $result['success'] ?? false,
+                'data_type' => isset($result['data']) ? gettype($result['data']) : 'null',
+                'data' => $result['data'] ?? null,
+            ]);
+
             if ($result['success'] && isset($result['data'])) {
                 // 배열이면 count
                 if (is_array($result['data'])) {
@@ -212,6 +221,15 @@ protected function getCardCount(BarobillMember $member, string $startDate, strin
         try {
             $result = $this->barobillService->getCards($member->biz_no, true);
 
+            Log::info('카드 조회 API 응답', [
+                'member_id' => $member->id,
+                'biz_no' => $member->biz_no,
+                'server_mode' => $member->server_mode,
+                'success' => $result['success'] ?? false,
+                'data_type' => isset($result['data']) ? gettype($result['data']) : 'null',
+                'data' => $result['data'] ?? null,
+            ]);
+
             if ($result['success'] && isset($result['data'])) {
                 // 배열이면 count
                 if (is_array($result['data'])) {