feat: POS GUI에 결제수단(카드/현금) 및 수납 여부 컬럼 추가

CD_SUNAB 테이블을 OUTER APPLY로 조인하여 결제 정보 표시
- 결제 컬럼: 카드(파랑), 현금(주황), 카드+현금(보라)
- 수납 컬럼: 수납완료(✓) / 미수납(-)

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

backend/gui/pos_sales_gui.py

@@ -67,14 +67,24 @@ class SalesQueryThread(QThread):
             sqlite_conn = db_manager.get_sqlite_connection()
             sqlite_cursor = sqlite_conn.cursor()
 
-            # 메인 쿼리: SALE_MAIN에서 오늘 판매 내역 조회
+            # 메인 쿼리: SALE_MAIN + CD_SUNAB(수납) 조인
+            # CD_SUNAB.PRESERIAL = SALE_MAIN.SL_NO_order (주문번호 기준)
             query = """
             SELECT
                 M.SL_NO_order,
                 M.InsertTime,
                 M.SL_MY_sale,
-                ISNULL(M.SL_NM_custom, '[비고객]') AS customer_name
+                ISNULL(M.SL_NM_custom, '[비고객]') AS customer_name,
+                ISNULL(S.card_total, 0) AS card_total,
+                ISNULL(S.cash_total, 0) AS cash_total
             FROM SALE_MAIN M
+            OUTER APPLY (
+                SELECT TOP 1
+                    ISNULL(ETC_CARD, 0) + ISNULL(OTC_CARD, 0) AS card_total,
+                    ISNULL(ETC_CASH, 0) + ISNULL(OTC_CASH, 0) AS cash_total
+                FROM CD_SUNAB
+                WHERE PRESERIAL = M.SL_NO_order
+            ) S
             WHERE M.SL_DT_appl = ?
             ORDER BY M.InsertTime DESC
             """
@@ -84,7 +94,7 @@ class SalesQueryThread(QThread):
 
             sales_list = []
             for row in rows:
-                order_no, insert_time, sale_amount, customer = row
+                order_no, insert_time, sale_amount, customer, card_total, cash_total = row
 
                 # 품목 수 조회 (SALE_SUB)
                 mssql_cursor.execute("""
@@ -121,11 +131,26 @@ class SalesQueryThread(QThread):
                     claimed_phone = ""
                     claimed_points = 0
 
+                # 결제수단 판별
+                card_amt = float(card_total) if card_total else 0.0
+                cash_amt = float(cash_total) if cash_total else 0.0
+                if card_amt > 0 and cash_amt > 0:
+                    pay_method = '카드+현금'
+                elif card_amt > 0:
+                    pay_method = '카드'
+                elif cash_amt > 0:
+                    pay_method = '현금'
+                else:
+                    pay_method = ''
+                paid = (card_amt + cash_amt) > 0
+
                 sales_list.append({
                     'order_no': order_no,
                     'time': insert_time.strftime('%H:%M') if insert_time else '--:--',
                     'amount': float(sale_amount) if sale_amount else 0.0,
                     'customer': customer,
+                    'pay_method': pay_method,
+                    'paid': paid,
                     'item_count': item_count,
                     'claimed_name': claimed_name,
                     'claimed_phone': claimed_phone,
@@ -575,6 +600,8 @@ class POSSalesGUI(QMainWindow):
         ('주문번호',    150, 'order_no'),
         ('시간',        70, 'time'),
         ('금액',       100, 'amount'),
+        ('결제',        80, 'pay_method'),
+        ('수납',        50, 'paid'),
         ('고객명',      80, 'customer'),
         ('품목수',      55, 'item_count'),
         ('적립자',      90, 'claimed_name'),
@@ -811,6 +838,34 @@ class POSSalesGUI(QMainWindow):
             amount_item.setTextAlignment(Qt.AlignRight | Qt.AlignVCenter)
             self.sales_table.setItem(row, COL['amount'], amount_item)
 
+            # 결제수단
+            pay_item = QTableWidgetItem(sale['pay_method'])
+            pay_item.setTextAlignment(Qt.AlignCenter)
+            if sale['pay_method'] == '카드':
+                pay_item.setForeground(QColor('#1976D2'))
+            elif sale['pay_method'] == '현금':
+                pay_item.setForeground(QColor('#E65100'))
+            elif sale['pay_method']:
+                pay_item.setForeground(QColor('#7B1FA2'))
+            else:
+                pay_item.setText('-')
+                pay_item.setForeground(QColor('#BDBDBD'))
+            self.sales_table.setItem(row, COL['pay_method'], pay_item)
+
+            # 수납 여부
+            paid_item = QTableWidgetItem()
+            paid_item.setTextAlignment(Qt.AlignCenter)
+            if sale['paid']:
+                paid_item.setText('✓')
+                paid_item.setForeground(QColor('#4CAF50'))
+                f = QFont()
+                f.setBold(True)
+                paid_item.setFont(f)
+            else:
+                paid_item.setText('-')
+                paid_item.setForeground(QColor('#BDBDBD'))
+            self.sales_table.setItem(row, COL['paid'], paid_item)
+
             # 고객명 (MSSQL POS)
             self.sales_table.setItem(row, COL['customer'],
                 QTableWidgetItem(sale['customer']))