修复步骤3去耀斑路径断层 + UI默认路径标准化

src/gui/panels/step3_panel.py

@@ -209,7 +209,7 @@ class Step3Panel(QWidget):
             "输出影像:",
             "Image Files (*.bsq *.dat *.tif);;All Files (*.*)"
         )
-        self.output_file.line_edit.setPlaceholderText("deglint_image.dat")
+        self.output_file.line_edit.setPlaceholderText("deglint_image.bsq")
         layout.addWidget(self.output_file)
 
         # 启用步骤
@@ -301,7 +301,7 @@ class Step3Panel(QWidget):
         if self.work_dir:
             output_dir = os.path.join(self.work_dir, "3_deglint")
             os.makedirs(output_dir, exist_ok=True)
-            default_output_path = os.path.join(output_dir, "deglint_image.dat").replace('\\', '/')
+            default_output_path = os.path.join(output_dir, "deglint_image.bsq").replace('\\', '/')
             self.output_file.set_path(default_output_path)
         else:
             self.output_file.set_path("")