diff --git a/src/gui/panels/step6_75_panel.py b/src/gui/panels/step6_75_panel.py
index aaf8504..130387c 100644
--- a/src/gui/panels/step6_75_panel.py
+++ b/src/gui/panels/step6_75_panel.py
@@ -287,32 +287,45 @@ class Step6_75Panel(QWidget):
             work_dir: 工作目录路径
             pipeline: Pipeline 实例（未使用，保留接口兼容性）
         """
-        if work_dir:
-            self.work_dir = work_dir
-        elif hasattr(self, 'work_dir') and self.work_dir:
-            pass
-        else:
-            self.work_dir = None
+        try:
+            import traceback
 
-        # 1. 尝试从 Step5 界面读取训练光谱 CSV 路径
-        main_window = self.window()
-        if main_window and hasattr(main_window, 'step5_panel'):
-            step5_output_path = main_window.step5_panel.output_file.get_path()
-            if step5_output_path:
-                # 若为相对路径，使用 work_dir 合成为绝对路径
-                if not os.path.isabs(step5_output_path):
-                    step5_output_path = os.path.join(self.work_dir or '', step5_output_path).replace('\\', '/')
-                existing = self.csv_file.get_path()
-                if not existing or not existing.strip():
-                    self.csv_file.set_path(step5_output_path)
+            if work_dir:
+                self.work_dir = work_dir
+            elif hasattr(self, 'work_dir') and self.work_dir:
+                pass
+            else:
+                self.work_dir = None
 
-        # 2. 自动填充输出目录（9_Custom_Regression_Modeling）
-        if self.work_dir:
-            output_dir = os.path.join(self.work_dir, "9_Custom_Regression_Modeling")
-            os.makedirs(output_dir, exist_ok=True)
-            existing_out = self.output_dir.text().strip()
-            if not existing_out:
-                self.output_dir.setText(output_dir)
+            # 1. 尝试从 Step5 界面读取训练光谱 CSV 路径
+            main_window = self.window()
+            if main_window and hasattr(main_window, 'step5_panel'):
+                step5_widget = getattr(main_window.step5_panel, 'output_file', None)
+                step5_output_path = ""
+                if hasattr(step5_widget, 'get_path'):
+                    step5_output_path = step5_widget.get_path() or ""
+                elif hasattr(step5_widget, 'text'):
+                    step5_output_path = step5_widget.text() or ""
+
+                if step5_output_path:
+                    # 若为相对路径，使用 work_dir 合成为绝对路径
+                    if not os.path.isabs(step5_output_path):
+                        step5_output_path = os.path.join(self.work_dir or '', step5_output_path).replace('\\', '/')
+                    existing = self.csv_file.get_path()
+                    if not existing or not existing.strip():
+                        self.csv_file.set_path(step5_output_path)
+
+            # 2. 自动填充输出目录（9_Custom_Regression_Modeling）
+            if self.work_dir:
+                output_dir = os.path.join(self.work_dir, "9_Custom_Regression_Modeling")
+                os.makedirs(output_dir, exist_ok=True)
+                existing_out = self.output_dir.text().strip()
+                if not existing_out:
+                    self.output_dir.setText(output_dir)
+        except Exception as e:
+            import traceback
+            print(f"【{self.__class__.__name__}】自动填充失败，跳过: {e}")
+            traceback.print_exc()
 
     def run_step(self):
         """独立运行步骤6.75"""
diff --git a/src/gui/panels/step8_5_panel.py b/src/gui/panels/step8_5_panel.py
index 82914db..74e8520 100644
--- a/src/gui/panels/step8_5_panel.py
+++ b/src/gui/panels/step8_5_panel.py
@@ -89,44 +89,63 @@ class Step8_5Panel(QWidget):
             work_dir: 工作目录路径
             pipeline: Pipeline 实例（未使用，保留接口兼容性）
         """
-        if work_dir:
-            self.work_dir = work_dir
-        elif hasattr(self, 'work_dir') and self.work_dir:
-            pass
-        else:
-            self.work_dir = None
+        try:
+            import traceback
 
-        main_window = self.window()
+            if work_dir:
+                self.work_dir = work_dir
+            elif hasattr(self, 'work_dir') and self.work_dir:
+                pass
+            else:
+                self.work_dir = None
 
-        # 1. 尝试从 Step7 界面读取全湖采样点 CSV 路径
-        if main_window and hasattr(main_window, 'step7_panel'):
-            step7_output_path = main_window.step7_panel.output_file.get_path()
-            if step7_output_path:
-                # 若为相对路径，使用 work_dir 合成为绝对路径
-                if not os.path.isabs(step7_output_path):
-                    step7_output_path = os.path.join(self.work_dir or '', step7_output_path).replace('\\', '/')
-                existing = self.sampling_csv_file.get_path()
-                if not existing or not existing.strip():
-                    self.sampling_csv_file.set_path(step7_output_path)
+            main_window = self.window()
 
-        # 2. 尝试从 Step6.5 界面读取回归模型目录
-        if main_window and hasattr(main_window, 'step6_5_panel'):
-            step6_5_models_dir = main_window.step6_5_panel.output_dir.get_path()
-            if step6_5_models_dir:
-                # 若为相对路径，使用 work_dir 合成为绝对路径
-                if not os.path.isabs(step6_5_models_dir):
-                    step6_5_models_dir = os.path.join(self.work_dir or '', step6_5_models_dir).replace('\\', '/')
-                existing_models = self.models_dir_file.get_path()
-                if not existing_models or not existing_models.strip():
-                    self.models_dir_file.set_path(step6_5_models_dir)
+            # 1. 尝试从 Step7 界面读取全湖采样点 CSV 路径
+            if main_window and hasattr(main_window, 'step7_panel'):
+                step7_widget = getattr(main_window.step7_panel, 'output_file', None)
+                step7_output_path = ""
+                if hasattr(step7_widget, 'get_path'):
+                    step7_output_path = step7_widget.get_path() or ""
+                elif hasattr(step7_widget, 'text'):
+                    step7_output_path = step7_widget.text() or ""
 
-        # 3. 自动填充输出路径（非经验模型预测目录）
-        if self.work_dir:
-            output_dir = os.path.join(self.work_dir, "11_12_13_predictions/Non_Empirical_Prediction")
-            os.makedirs(output_dir, exist_ok=True)
-            existing_out = self.output_file.get_path()
-            if not existing_out or not existing_out.strip():
-                self.output_file.set_path(output_dir)
+                if step7_output_path:
+                    # 若为相对路径，使用 work_dir 合成为绝对路径
+                    if not os.path.isabs(step7_output_path):
+                        step7_output_path = os.path.join(self.work_dir or '', step7_output_path).replace('\\', '/')
+                    existing = self.sampling_csv_file.get_path()
+                    if not existing or not existing.strip():
+                        self.sampling_csv_file.set_path(step7_output_path)
+
+            # 2. 尝试从 Step6.5 界面读取回归模型目录
+            if main_window and hasattr(main_window, 'step6_5_panel'):
+                step6_5_widget = getattr(main_window.step6_5_panel, 'output_dir', None)
+                step6_5_models_dir = ""
+                if hasattr(step6_5_widget, 'get_path'):
+                    step6_5_models_dir = step6_5_widget.get_path() or ""
+                elif hasattr(step6_5_widget, 'text'):
+                    step6_5_models_dir = step6_5_widget.text() or ""
+
+                if step6_5_models_dir:
+                    # 若为相对路径，使用 work_dir 合成为绝对路径
+                    if not os.path.isabs(step6_5_models_dir):
+                        step6_5_models_dir = os.path.join(self.work_dir or '', step6_5_models_dir).replace('\\', '/')
+                    existing_models = self.models_dir_file.get_path()
+                    if not existing_models or not existing_models.strip():
+                        self.models_dir_file.set_path(step6_5_models_dir)
+
+            # 3. 自动填充输出路径（非经验模型预测目录）
+            if self.work_dir:
+                output_dir = os.path.join(self.work_dir, "11_12_13_predictions/Non_Empirical_Prediction")
+                os.makedirs(output_dir, exist_ok=True)
+                existing_out = self.output_file.get_path()
+                if not existing_out or not existing_out.strip():
+                    self.output_file.set_path(output_dir)
+        except Exception as e:
+            import traceback
+            print(f"【{self.__class__.__name__}】自动填充失败，跳过: {e}")
+            traceback.print_exc()
 
     def _get_default_work_dir(self):
         """获取 work_dir，优先用 panel 自身缓存的，否则尝试从主窗口取"""
diff --git a/src/gui/panels/step8_75_panel.py b/src/gui/panels/step8_75_panel.py
index 809ce6b..fb37d53 100644
--- a/src/gui/panels/step8_75_panel.py
+++ b/src/gui/panels/step8_75_panel.py
@@ -82,51 +82,71 @@ class Step8_75Panel(QWidget):
             work_dir: 工作目录路径
             pipeline: Pipeline 实例（未使用，保留接口兼容性）
         """
-        if work_dir:
-            self.work_dir = work_dir
-        elif hasattr(self, 'work_dir') and self.work_dir:
-            pass
-        else:
-            self.work_dir = None
+        try:
+            import traceback
 
-        main_window = self.window()
+            if work_dir:
+                self.work_dir = work_dir
+            elif hasattr(self, 'work_dir') and self.work_dir:
+                pass
+            else:
+                self.work_dir = None
 
-        # 1. 尝试从 Step7 界面读取全湖采样点 CSV 路径
-        if main_window and hasattr(main_window, 'step7_panel'):
-            step7_output_path = main_window.step7_panel.output_file.get_path()
-            if step7_output_path:
-                # 若为相对路径，使用 work_dir 合成为绝对路径
-                if not os.path.isabs(step7_output_path):
-                    step7_output_path = os.path.join(self.work_dir or '', step7_output_path).replace('\\', '/')
-                existing = self.sampling_csv_file.get_path()
-                if not existing or not existing.strip():
-                    self.sampling_csv_file.set_path(step7_output_path)
+            main_window = self.window()
 
-        # 2. 尝试从 Step6.75 界面读取自定义回归模型目录
-        if main_window and hasattr(main_window, 'step6_75_panel'):
-            step6_75_models_dir = main_window.step6_75_panel.output_dir.text().strip()
-            if step6_75_models_dir:
-                # 若为相对路径，使用 work_dir 合成为绝对路径
-                if not os.path.isabs(step6_75_models_dir):
-                    step6_75_models_dir = os.path.join(self.work_dir or '', step6_75_models_dir).replace('\\', '/')
-                existing_models = self.regression_models_dir.get_path()
-                if not existing_models or not existing_models.strip():
-                    self.regression_models_dir.set_path(step6_75_models_dir)
+            # 1. 尝试从 Step7 界面读取全湖采样点 CSV 路径
+            if main_window and hasattr(main_window, 'step7_panel'):
+                step7_widget = getattr(main_window.step7_panel, 'output_file', None)
+                step7_output_path = ""
+                if hasattr(step7_widget, 'get_path'):
+                    step7_output_path = step7_widget.get_path() or ""
+                elif hasattr(step7_widget, 'text'):
+                    step7_output_path = step7_widget.text() or ""
 
-        # 3. 自动填充回归模型目录（如果 step6_75 未提供）
-        if self.work_dir:
-            models_dir = self.regression_models_dir.get_path().strip()
-            if not models_dir:
-                default_models_dir = os.path.join(self.work_dir, "9_Custom_Regression_Modeling").replace('\\', '/')
-                self.regression_models_dir.set_path(default_models_dir)
+                if step7_output_path:
+                    # 若为相对路径，使用 work_dir 合成为绝对路径
+                    if not os.path.isabs(step7_output_path):
+                        step7_output_path = os.path.join(self.work_dir or '', step7_output_path).replace('\\', '/')
+                    existing = self.sampling_csv_file.get_path()
+                    if not existing or not existing.strip():
+                        self.sampling_csv_file.set_path(step7_output_path)
 
-        # 4. 自动填充输出目录（自定义回归预测目录）
-        if self.work_dir:
-            output_dir = os.path.join(self.work_dir, "11_12_13_predictions/Custom_Regression_Prediction")
-            os.makedirs(output_dir, exist_ok=True)
-            existing_out = self.output_dir_widget.get_path()
-            if not existing_out or not existing_out.strip():
-                self.output_dir_widget.set_path(output_dir)
+            # 2. 尝试从 Step6.75 界面读取自定义回归模型目录
+            if main_window and hasattr(main_window, 'step6_75_panel'):
+                step6_75_widget = getattr(main_window.step6_75_panel, 'output_dir', None)
+                step6_75_models_dir = ""
+                if hasattr(step6_75_widget, 'get_path'):
+                    step6_75_models_dir = step6_75_widget.get_path() or ""
+                elif hasattr(step6_75_widget, 'text'):
+                    step6_75_models_dir = step6_75_widget.text() or ""
+                step6_75_models_dir = step6_75_models_dir.strip()
+
+                if step6_75_models_dir:
+                    # 若为相对路径，使用 work_dir 合成为绝对路径
+                    if not os.path.isabs(step6_75_models_dir):
+                        step6_75_models_dir = os.path.join(self.work_dir or '', step6_75_models_dir).replace('\\', '/')
+                    existing_models = self.regression_models_dir.get_path()
+                    if not existing_models or not existing_models.strip():
+                        self.regression_models_dir.set_path(step6_75_models_dir)
+
+            # 3. 自动填充回归模型目录（如果 step6_75 未提供）
+            if self.work_dir:
+                models_dir = self.regression_models_dir.get_path().strip()
+                if not models_dir:
+                    default_models_dir = os.path.join(self.work_dir, "9_Custom_Regression_Modeling").replace('\\', '/')
+                    self.regression_models_dir.set_path(default_models_dir)
+
+            # 4. 自动填充输出目录（自定义回归预测目录）
+            if self.work_dir:
+                output_dir = os.path.join(self.work_dir, "11_12_13_predictions/Custom_Regression_Prediction")
+                os.makedirs(output_dir, exist_ok=True)
+                existing_out = self.output_dir_widget.get_path()
+                if not existing_out or not existing_out.strip():
+                    self.output_dir_widget.set_path(output_dir)
+        except Exception as e:
+            import traceback
+            print(f"【{self.__class__.__name__}】自动填充失败，跳过: {e}")
+            traceback.print_exc()
 
     def _get_default_work_dir(self):
         """获取 work_dir，优先用 panel 自身缓存的，否则尝试从主窗口取"""
diff --git a/src/gui/panels/step8_panel.py b/src/gui/panels/step8_panel.py
index d1ae65a..06f41ec 100644
--- a/src/gui/panels/step8_panel.py
+++ b/src/gui/panels/step8_panel.py
@@ -86,44 +86,63 @@ class Step8Panel(QWidget):
             work_dir: 工作目录路径
             pipeline: Pipeline 实例（未使用，保留接口兼容性）
         """
-        if work_dir:
-            self.work_dir = work_dir
-        elif hasattr(self, 'work_dir') and self.work_dir:
-            pass
-        else:
-            self.work_dir = None
+        try:
+            import traceback
 
-        main_window = self.window()
+            if work_dir:
+                self.work_dir = work_dir
+            elif hasattr(self, 'work_dir') and self.work_dir:
+                pass
+            else:
+                self.work_dir = None
 
-        # 1. 尝试从 Step7 界面读取全湖采样点 CSV 路径
-        if main_window and hasattr(main_window, 'step7_panel'):
-            step7_output_path = main_window.step7_panel.output_file.get_path()
-            if step7_output_path:
-                # 若为相对路径，使用 work_dir 合成为绝对路径
-                if not os.path.isabs(step7_output_path):
-                    step7_output_path = os.path.join(self.work_dir or '', step7_output_path).replace('\\', '/')
-                existing = self.sampling_csv_file.get_path()
-                if not existing or not existing.strip():
-                    self.sampling_csv_file.set_path(step7_output_path)
+            main_window = self.window()
 
-        # 2. 尝试从 Step6 界面读取监督模型目录
-        if main_window and hasattr(main_window, 'step6_panel'):
-            step6_models_dir = main_window.step6_panel.output_dir.get_path()
-            if step6_models_dir:
-                # 若为相对路径，使用 work_dir 合成为绝对路径
-                if not os.path.isabs(step6_models_dir):
-                    step6_models_dir = os.path.join(self.work_dir or '', step6_models_dir).replace('\\', '/')
-                existing_models = self.models_dir_file.get_path()
-                if not existing_models or not existing_models.strip():
-                    self.models_dir_file.set_path(step6_models_dir)
+            # 1. 尝试从 Step7 界面读取全湖采样点 CSV 路径
+            if main_window and hasattr(main_window, 'step7_panel'):
+                step7_widget = getattr(main_window.step7_panel, 'output_file', None)
+                step7_output_path = ""
+                if hasattr(step7_widget, 'get_path'):
+                    step7_output_path = step7_widget.get_path() or ""
+                elif hasattr(step7_widget, 'text'):
+                    step7_output_path = step7_widget.text() or ""
 
-        # 3. 自动填充输出路径（机器学习预测目录）
-        if self.work_dir:
-            output_dir = os.path.join(self.work_dir, "11_12_13_predictions/Machine_Learning_Prediction")
-            os.makedirs(output_dir, exist_ok=True)
-            existing_out = self.output_file.get_path()
-            if not existing_out or not existing_out.strip():
-                self.output_file.set_path(output_dir)
+                if step7_output_path:
+                    # 若为相对路径，使用 work_dir 合成为绝对路径
+                    if not os.path.isabs(step7_output_path):
+                        step7_output_path = os.path.join(self.work_dir or '', step7_output_path).replace('\\', '/')
+                    existing = self.sampling_csv_file.get_path()
+                    if not existing or not existing.strip():
+                        self.sampling_csv_file.set_path(step7_output_path)
+
+            # 2. 尝试从 Step6 界面读取监督模型目录
+            if main_window and hasattr(main_window, 'step6_panel'):
+                step6_widget = getattr(main_window.step6_panel, 'output_dir', None)
+                step6_models_dir = ""
+                if hasattr(step6_widget, 'get_path'):
+                    step6_models_dir = step6_widget.get_path() or ""
+                elif hasattr(step6_widget, 'text'):
+                    step6_models_dir = step6_widget.text() or ""
+
+                if step6_models_dir:
+                    # 若为相对路径，使用 work_dir 合成为绝对路径
+                    if not os.path.isabs(step6_models_dir):
+                        step6_models_dir = os.path.join(self.work_dir or '', step6_models_dir).replace('\\', '/')
+                    existing_models = self.models_dir_file.get_path()
+                    if not existing_models or not existing_models.strip():
+                        self.models_dir_file.set_path(step6_models_dir)
+
+            # 3. 自动填充输出路径（机器学习预测目录）
+            if self.work_dir:
+                output_dir = os.path.join(self.work_dir, "11_12_13_predictions/Machine_Learning_Prediction")
+                os.makedirs(output_dir, exist_ok=True)
+                existing_out = self.output_file.get_path()
+                if not existing_out or not existing_out.strip():
+                    self.output_file.set_path(output_dir)
+        except Exception as e:
+            import traceback
+            print(f"【{self.__class__.__name__}】自动填充失败，跳过: {e}")
+            traceback.print_exc()
 
     def _get_default_work_dir(self):
         """获取 work_dir，优先用 panel 自身缓存的，否则尝试从主窗口取"""
diff --git a/src/gui/panels/step9_panel.py b/src/gui/panels/step9_panel.py
index 74c8531..507d9a6 100644
--- a/src/gui/panels/step9_panel.py
+++ b/src/gui/panels/step9_panel.py
@@ -308,57 +308,82 @@ class Step9Panel(QWidget):
             work_dir: 工作目录路径
             pipeline: Pipeline 实例（未使用，保留接口兼容性）
         """
-        if work_dir:
-            self.work_dir = work_dir
-        elif hasattr(self, 'work_dir') and self.work_dir:
-            pass
-        else:
-            self.work_dir = None
+        try:
+            import traceback
 
-        main_window = self.window()
-        if not main_window:
-            return
+            if work_dir:
+                self.work_dir = work_dir
+            elif hasattr(self, 'work_dir') and self.work_dir:
+                pass
+            else:
+                self.work_dir = None
 
-        # 1. 尝试从 Step8 界面读取机器学习预测输出目录（优先）
-        pred_dir = None
-        if hasattr(main_window, 'step8_panel'):
-            step8_output = main_window.step8_panel.output_file.get_path()
-            if step8_output:
-                # 若为相对路径，使用 work_dir 合成为绝对路径
-                if not os.path.isabs(step8_output):
-                    step8_output = os.path.join(self.work_dir or '', step8_output).replace('\\', '/')
-                pred_dir = str(Path(step8_output).parent)
+            main_window = self.window()
+            if not main_window:
+                return
 
-        # 2. 备选：从 Step8.5 界面读取非经验预测输出目录
-        if not pred_dir and hasattr(main_window, 'step8_5_panel'):
-            step8_5_output = main_window.step8_5_panel.output_file.get_path()
-            if step8_5_output:
-                # 若为相对路径，使用 work_dir 合成为绝对路径
-                if not os.path.isabs(step8_5_output):
-                    step8_5_output = os.path.join(self.work_dir or '', step8_5_output).replace('\\', '/')
-                pred_dir = str(Path(step8_5_output).parent)
+            # 1. 尝试从 Step8 界面读取机器学习预测输出目录（优先）
+            pred_dir = None
+            if hasattr(main_window, 'step8_panel'):
+                step8_widget = getattr(main_window.step8_panel, 'output_file', None)
+                step8_output = ""
+                if hasattr(step8_widget, 'get_path'):
+                    step8_output = step8_widget.get_path() or ""
+                elif hasattr(step8_widget, 'text'):
+                    step8_output = step8_widget.text() or ""
 
-        # 3. 备选：从 Step8.75 界面读取自定义回归预测输出目录
-        if not pred_dir and hasattr(main_window, 'step8_75_panel'):
-            step8_75_output = main_window.step8_75_panel.output_dir_widget.get_path()
-            if step8_75_output:
-                pred_dir = step8_75_output
+                if step8_output:
+                    # 若为相对路径，使用 work_dir 合成为绝对路径
+                    if not os.path.isabs(step8_output):
+                        step8_output = os.path.join(self.work_dir or '', step8_output).replace('\\', '/')
+                    pred_dir = str(Path(step8_output).parent)
 
-        # 自动填入"预测CSV目录"（文件夹批量模式）
-        if pred_dir:
-            existing_dir = (self.prediction_csv_dir_edit.text() or "").strip()
-            if not existing_dir:
-                self.prediction_csv_dir_edit.setText(pred_dir)
-                # 切换到文件夹批量模式
-                self.mode_folder_rb.setChecked(True)
+            # 2. 备选：从 Step8.5 界面读取非经验预测输出目录
+            if not pred_dir and hasattr(main_window, 'step8_5_panel'):
+                step8_5_widget = getattr(main_window.step8_5_panel, 'output_file', None)
+                step8_5_output = ""
+                if hasattr(step8_5_widget, 'get_path'):
+                    step8_5_output = step8_5_widget.get_path() or ""
+                elif hasattr(step8_5_widget, 'text'):
+                    step8_5_output = step8_5_widget.text() or ""
 
-        # 4. 自动填充输出目录（14_visualization）
-        if self.work_dir:
-            output_dir = os.path.join(self.work_dir, "14_visualization")
-            os.makedirs(output_dir, exist_ok=True)
-            existing_out = self.output_dir.get_path()
-            if not existing_out or not existing_out.strip():
-                self.output_dir.set_path(output_dir)
+                if step8_5_output:
+                    # 若为相对路径，使用 work_dir 合成为绝对路径
+                    if not os.path.isabs(step8_5_output):
+                        step8_5_output = os.path.join(self.work_dir or '', step8_5_output).replace('\\', '/')
+                    pred_dir = str(Path(step8_5_output).parent)
+
+            # 3. 备选：从 Step8.75 界面读取自定义回归预测输出目录
+            if not pred_dir and hasattr(main_window, 'step8_75_panel'):
+                step8_75_widget = getattr(main_window.step8_75_panel, 'output_dir_widget', None)
+                step8_75_output = ""
+                if hasattr(step8_75_widget, 'get_path'):
+                    step8_75_output = step8_75_widget.get_path() or ""
+                elif hasattr(step8_75_widget, 'text'):
+                    step8_75_output = step8_75_widget.text() or ""
+
+                if step8_75_output:
+                    pred_dir = step8_75_output
+
+            # 自动填入"预测CSV目录"（文件夹批量模式）
+            if pred_dir:
+                existing_dir = (self.prediction_csv_dir_edit.text() or "").strip()
+                if not existing_dir:
+                    self.prediction_csv_dir_edit.setText(pred_dir)
+                    # 切换到文件夹批量模式
+                    self.mode_folder_rb.setChecked(True)
+
+            # 4. 自动填充输出目录（14_visualization）
+            if self.work_dir:
+                output_dir = os.path.join(self.work_dir, "14_visualization")
+                os.makedirs(output_dir, exist_ok=True)
+                existing_out = self.output_dir.get_path()
+                if not existing_out or not existing_out.strip():
+                    self.output_dir.set_path(output_dir)
+        except Exception as e:
+            import traceback
+            print(f"【{self.__class__.__name__}】自动填充失败，跳过: {e}")
+            traceback.print_exc()
 
     def browse_output_dir(self):
         """浏览输出目录"""