feat: 어드민 적립내역 클릭 시 품목 상세 모달 + 키오스크 UI 개선

- 어드민 최근 적립 내역에서 행 클릭 시 MSSQL 품목 상세 모달 표시
- transaction_id가 있는 행만 클릭 가능 (돋보기 아이콘 표시)
- 키오스크 품목 목록 표시, 세로 모니터 반응형 레이아웃 추가

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

backend/app.py

@@ -1791,7 +1791,8 @@ def admin():
             ml.balance_after,
             ml.reason,
             ml.description,
-            ml.created_at
+            ml.created_at,
+            ml.transaction_id
         FROM mileage_ledger ml
         JOIN users u ON ml.user_id = u.id
         ORDER BY ml.created_at DESC
@@ -1912,12 +1913,35 @@ def api_kiosk_trigger():
             claimable_points = token_info['claimable_points']
             qr_url = token_info['qr_url']
 
+        # MSSQL에서 구매 품목 조회
+        sale_items = []
+        try:
+            mssql_session = db_manager.get_session('PM_PRES')
+            sale_sub_query = text("""
+                SELECT
+                    ISNULL(G.GoodsName, '(약품명 없음)') AS goods_name,
+                    S.SL_NM_item AS quantity,
+                    S.SL_TOTAL_PRICE AS total
+                FROM SALE_SUB S
+                LEFT JOIN PM_DRUG.dbo.CD_GOODS G ON S.DrugCode = G.DrugCode
+                WHERE S.SL_NO_order = :transaction_id
+                ORDER BY S.DrugCode
+            """)
+            rows = mssql_session.execute(sale_sub_query, {'transaction_id': transaction_id}).fetchall()
+            sale_items = [
+                {'name': r.goods_name, 'qty': int(r.quantity or 0), 'total': int(r.total or 0)}
+                for r in rows
+            ]
+        except Exception as e:
+            logging.warning(f"키오스크 품목 조회 실패 (transaction_id={transaction_id}): {e}")
+
         # 키오스크 세션 저장
         kiosk_current_session = {
             'transaction_id': transaction_id,
             'amount': int(amount),
             'points': claimable_points,
             'qr_url': qr_url,
+            'items': sale_items,
             'created_at': datetime.now(KST).isoformat()
         }
 
@@ -1954,7 +1978,8 @@ def api_kiosk_current():
         'transaction_id': kiosk_current_session['transaction_id'],
         'amount': kiosk_current_session['amount'],
         'points': kiosk_current_session['points'],
-        'qr_url': kiosk_current_session.get('qr_url')
+        'qr_url': kiosk_current_session.get('qr_url'),
+        'items': kiosk_current_session.get('items', [])
     })