fix: [finance] 일반전표 목록 source 필드 및 페이지네이션 구조 수정

- deposits/withdrawals 조회 시 source를 항상 'linked'로 고정
- 페이지네이션 meta 래핑 제거하여 플랫 구조로 변경

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

app/Services/GeneralJournalEntryService.php

@@ -46,7 +46,7 @@ public function index(array $params): array
                 DB::raw('0 as withdrawal_amount'),
                 DB::raw('COALESCE(journal_entries.total_debit, 0) as debit_amount'),
                 DB::raw('COALESCE(journal_entries.total_credit, 0) as credit_amount'),
-                DB::raw("CASE WHEN journal_entries.id IS NOT NULL THEN 'linked' ELSE 'manual' END as source"),
+                DB::raw("'linked' as source"),
                 'deposits.created_at',
                 'deposits.updated_at',
                 DB::raw('journal_entries.id as journal_entry_id'),
@@ -73,7 +73,7 @@ public function index(array $params): array
                 'withdrawals.amount as withdrawal_amount',
                 DB::raw('COALESCE(journal_entries.total_debit, 0) as debit_amount'),
                 DB::raw('COALESCE(journal_entries.total_credit, 0) as credit_amount'),
-                DB::raw("CASE WHEN journal_entries.id IS NOT NULL THEN 'linked' ELSE 'manual' END as source"),
+                DB::raw("'linked' as source"),
                 'withdrawals.created_at',
                 'withdrawals.updated_at',
                 DB::raw('journal_entries.id as journal_entry_id'),
@@ -170,12 +170,10 @@ public function index(array $params): array
 
         return [
             'data' => $items->toArray(),
-            'meta' => [
-                'current_page' => $page,
-                'last_page' => (int) ceil($totalCount / $perPage),
-                'per_page' => $perPage,
-                'total' => $totalCount,
-            ],
+            'current_page' => $page,
+            'last_page' => (int) ceil($totalCount / $perPage),
+            'per_page' => $perPage,
+            'total' => $totalCount,
         ];
     }