style: format all Python files with Black

Apply Black formatter to the entire codebase for consistent code style.

Co-Authored-By: Claude (glm-5) <noreply@anthropic.com>

gui/widgets/progress_dialog.py

@@ -20,7 +20,7 @@ class ProgressDialog:
         title: str = "处理中...",
         message: str = "请稍候",
         can_cancel: bool = True,
-        on_cancel: Optional[Callable] = None
+        on_cancel: Optional[Callable] = None,
     ):
         """
         初始化进度对话框
@@ -66,11 +66,7 @@ class ProgressDialog:
         self.message_label.pack(pady=(20, 10), padx=20)
 
         # 进度条
-        self.progress = ttk.Progressbar(
-            self.dialog,
-            mode='indeterminate',
-            length=360
-        )
+        self.progress = ttk.Progressbar(self.dialog, mode="indeterminate", length=360)
         self.progress.pack(pady=10, padx=20)
         self.progress.start(10)
 
@@ -80,9 +76,7 @@ class ProgressDialog:
             button_frame.pack(pady=10)
 
             self.cancel_button = ttk.Button(
-                button_frame,
-                text="取消",
-                command=self._on_cancel
+                button_frame, text="取消", command=self._on_cancel
             )
             self.cancel_button.pack()
 
@@ -106,8 +100,8 @@ class ProgressDialog:
             value: 当前进度值
             maximum: 最大值
         """
-        self.progress.config(mode='determinate', maximum=maximum)
-        self.progress['value'] = value
+        self.progress.config(mode="determinate", maximum=maximum)
+        self.progress["value"] = value
         self.dialog.update_idletasks()
 
     def close(self):