style: normalize code formatting across the codebase

- Standardize quote style (single to double quotes)
- Improve code formatting consistency
- Apply formatting to utilities, GUI components, and tools
- Update imports and docstrings for consistency

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

gui/main_window.py

@@ -92,13 +92,17 @@ class MainWindow:
         # 状态文本
         self.status_text = tk.StringVar()
         self.status_text.set("就绪")
-        status_label = ttk.Label(self.status_bar, textvariable=self.status_text, anchor=tk.W)
+        status_label = ttk.Label(
+            self.status_bar, textvariable=self.status_text, anchor=tk.W
+        )
         status_label.pack(side=tk.LEFT, padx=5)
 
         # 配置状态指示
         self.config_status = tk.StringVar()
         self.config_status.set("配置已加载")
-        config_label = ttk.Label(self.status_bar, textvariable=self.config_status, anchor=tk.E)
+        config_label = ttk.Label(
+            self.status_bar, textvariable=self.config_status, anchor=tk.E
+        )
         config_label.pack(side=tk.RIGHT, padx=5)
 
     def _center_window(self):
@@ -113,6 +117,7 @@ class MainWindow:
     def show_about(self):
         """显示关于对话框"""
         from tkinter import messagebox
+
         messagebox.showinfo(
             "关于 ERP 自动化工具",
             "ERP 自动化工具 v1.0\n\n"
@@ -121,5 +126,5 @@ class MainWindow:
             "• 物料校验 - 校验物料状态并匹配待删除物料\n"
             "• 数据查询 - 查询生产订单号等信息\n"
             "• 设置管理 - 管理系统配置\n\n"
-            "基于 Playwright 和 Python 开发"
+            "基于 Playwright 和 Python 开发",
         )