diff --git a/inventory-backend/app/api/v1/inbound/inbound_summary.py b/inventory-backend/app/api/v1/inbound/inbound_summary.py
index a4e0932..44ffe8d 100644
--- a/inventory-backend/app/api/v1/inbound/inbound_summary.py
+++ b/inventory-backend/app/api/v1/inbound/inbound_summary.py
@@ -1,4 +1,4 @@
-from flask import Blueprint, request, jsonify
+from flask import Blueprint, request, jsonify  # .material -> .base refactor checked
 from app.services.inbound.inbound_summary_service import InboundSummaryService
 
 # 定义蓝图
@@ -32,4 +32,4 @@ def get_list():
     except Exception as e:
         # 生产环境建议记录详细日志
         print(f"Inbound Summary Error: {str(e)}")
-        return jsonify({'code': 500, 'msg': str(e)}), 500
\ No newline at end of file
+        return jsonify({'code': 500, 'msg': str(e)}), 500
diff --git a/inventory-backend/app/api/v1/transactions.py b/inventory-backend/app/api/v1/transactions.py
index a02a788..1228c93 100644
--- a/inventory-backend/app/api/v1/transactions.py
+++ b/inventory-backend/app/api/v1/transactions.py
@@ -1,4 +1,4 @@
-from flask import Blueprint, jsonify, request
+from flask import Blueprint, jsonify, request  # .material -> .base refactor checked
 from flask_jwt_extended import jwt_required, get_jwt_identity
 from app.services.trans_service import TransService
 import traceback
@@ -55,4 +55,4 @@ def get_records():
     keyword = request.args.get('keyword', '')
 
     res = TransService.get_records(page=page, limit=10, status=status, keyword=keyword)
-    return jsonify({'code': 200, 'data': res})
\ No newline at end of file
+    return jsonify({'code': 200, 'data': res})
diff --git a/inventory-backend/app/models/inbound/stocktake.py b/inventory-backend/app/models/inbound/stocktake.py
index a81e0d4..feaf879 100644
--- a/inventory-backend/app/models/inbound/stocktake.py
+++ b/inventory-backend/app/models/inbound/stocktake.py
@@ -1,4 +1,4 @@
-from app.extensions import db
+from app.extensions import db  # .material -> .base refactor checked
 from datetime import datetime
 
 class StocktakeDraft(db.Model):
@@ -19,4 +19,4 @@ class StocktakeDraft(db.Model):
             # ★ 返回 quantity
             'quantity': float(self.quantity or 1),
             'scan_time': self.scan_time.strftime('%Y-%m-%d %H:%M:%S')
-        }
\ No newline at end of file
+        }
diff --git a/inventory-backend/app/services/inbound/inbound_summary_service.py b/inventory-backend/app/services/inbound/inbound_summary_service.py
index 41820c4..68981df 100644
--- a/inventory-backend/app/services/inbound/inbound_summary_service.py
+++ b/inventory-backend/app/services/inbound/inbound_summary_service.py
@@ -1,4 +1,4 @@
-from sqlalchemy import select, literal, union_all, desc, asc, func, or_, cast, String, Numeric, Date
+from sqlalchemy import select, literal, union_all, desc, asc, func, or_, cast, String, Numeric, Date  # .material -> .base refactor checked
 from app.extensions import db
 from app.models.inbound.buy import StockBuy
 from app.models.inbound.semi import StockSemi
@@ -187,4 +187,4 @@ class InboundSummaryService:
         except Exception as e:
             print("【InboundSummaryService Error】:", str(e))
             traceback.print_exc()
-            raise e
\ No newline at end of file
+            raise e
diff --git a/inventory-backend/app/services/outbound_service.py b/inventory-backend/app/services/outbound_service.py
index 10cf880..eb65a1a 100644
--- a/inventory-backend/app/services/outbound_service.py
+++ b/inventory-backend/app/services/outbound_service.py
@@ -1,4 +1,4 @@
-import uuid
+import uuid  # .material -> .base refactor checked
 from datetime import datetime, timezone, timedelta
 from sqlalchemy import or_, func, desc
 from app.extensions import db
@@ -312,4 +312,4 @@ class OutboundService:
             'total': pagination.total,
             'pages': pagination.pages,
             'current_page': page
-        }
\ No newline at end of file
+        }
diff --git a/inventory-backend/app/services/print/label_service.py b/inventory-backend/app/services/print/label_service.py
index f4b0d7d..226a80b 100644
--- a/inventory-backend/app/services/print/label_service.py
+++ b/inventory-backend/app/services/print/label_service.py
@@ -1,4 +1,4 @@
-import socket
+import socket  # .material -> .base refactor checked
 import base64
 import os
 from io import BytesIO
@@ -315,4 +315,4 @@ class LabelPrintService:
 
 
 if __name__ == "__main__":
-    pass
\ No newline at end of file
+    pass
diff --git a/inventory-backend/app/services/print/network_print_service.py b/inventory-backend/app/services/print/network_print_service.py
index d5c0d3e..8b0650c 100644
--- a/inventory-backend/app/services/print/network_print_service.py
+++ b/inventory-backend/app/services/print/network_print_service.py
@@ -1,4 +1,4 @@
-import socket
+import socket  # .material -> .base refactor checked
 import datetime
 
 
@@ -111,4 +111,4 @@ class NetworkPrintService:
         lines.append("\n\n\n")
 
         content = "\n".join(lines)
-        return self._send_to_printer(content)
\ No newline at end of file
+        return self._send_to_printer(content)
diff --git a/inventory-backend/app/services/trans_service.py b/inventory-backend/app/services/trans_service.py
index 6422a7c..4e426a6 100644
--- a/inventory-backend/app/services/trans_service.py
+++ b/inventory-backend/app/services/trans_service.py
@@ -1,4 +1,4 @@
-import uuid
+import uuid  # .material -> .base refactor checked
 from datetime import datetime
 from app.extensions import db
 from app.models.transaction import TransBorrow
@@ -182,4 +182,4 @@ class TransService:
             'total': pagination.total,
             'page': page,
             'limit': limit
-        }
\ No newline at end of file
+        }