feat: [재무] 어음 V8 + 상품권 접대비 연동 + 일반전표/계정과목 API

- Bill 확장 필드 (V8), Loan 상품권 카테고리/접대비 자동 연동
- GeneralJournalEntry CRUD, AccountSubject API
- 접대비/복리후생비 날짜 필터, 매출채권 soft delete 제외
- 바로빌 연동 API 엔드포인트 추가
- 부가세 상세 조회 API

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Http/Controllers/Api/V1/LoanController.php

@@ -11,6 +11,7 @@
 use App\Http\Requests\Loan\LoanUpdateRequest;
 use App\Services\LoanService;
 use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
 
 class LoanController extends Controller
 {
@@ -33,8 +34,10 @@ public function index(LoanIndexRequest $request): JsonResponse
      */
     public function summary(LoanIndexRequest $request): JsonResponse
     {
-        $userId = $request->validated()['user_id'] ?? null;
-        $result = $this->loanService->summary($userId);
+        $validated = $request->validated();
+        $userId = $validated['user_id'] ?? null;
+        $category = $validated['category'] ?? null;
+        $result = $this->loanService->summary($userId, $category);
 
         return ApiResponse::success($result, __('message.fetched'));
     }
@@ -42,9 +45,12 @@ public function summary(LoanIndexRequest $request): JsonResponse
     /**
      * 가지급금 대시보드
      */
-    public function dashboard(): JsonResponse
+    public function dashboard(Request $request): JsonResponse
     {
-        $result = $this->loanService->dashboard();
+        $startDate = $request->query('start_date');
+        $endDate = $request->query('end_date');
+
+        $result = $this->loanService->dashboard($startDate, $endDate);
 
         return ApiResponse::success($result, __('message.fetched'));
     }