feat(repair): decouple material base, sync global sku sequence and add scan/print features

inventory-backend/app/models/transaction.py

@@ -81,6 +81,9 @@ class TransRepair(db.Model):
     # SKU 保留
     sku = db.Column(db.String(100))
 
+    # 物料名称 (独立录入时使用，非关联base_id)
+    material_name = db.Column(db.String(200))
+
     # 序列号SN (新增，用于单台追溯)
     serial_number = db.Column(db.String(100), nullable=True)
 
@@ -114,6 +117,12 @@ class TransRepair(db.Model):
     # 客户名/来源
     related_contract_id = db.Column(db.String(100))
 
+    # 客户名称 (新增)
+    customer_name = db.Column(db.String(100))
+
+    # 客户所在地 (新增)
+    customer_location = db.Column(db.String(255))
+
     # 成本与售价
     cost_price = db.Column(db.Numeric(19, 4))
     sale_price = db.Column(db.Numeric(19, 4))
@@ -130,6 +139,7 @@ class TransRepair(db.Model):
             'repair_no': self.repair_no,
             'base_id': self.base_id,
             'sku': self.sku,
+            'material_name': self.material_name,
             'serial_number': self.serial_number,
             'source_table': self.source_table,
             'stock_id': self.stock_id,
@@ -140,6 +150,8 @@ class TransRepair(db.Model):
             'is_self_made': self.is_self_made,
             'related_product_id': self.related_product_id,
             'related_contract_id': self.related_contract_id,
+            'customer_name': self.customer_name,
+            'customer_location': self.customer_location,
             'repair_manager': self.repair_manager,
             'fault_description': self.fault_description,
             'repair_result': self.repair_result,