imput导入修正，去除掉废弃内容

src/gui/panels/step12_viz_panel.py

@@ -6,7 +6,6 @@ VisualizationPanel - 可视化分析面板
 """
 
 import os
-import sys
 import traceback
 from pathlib import Path
 from typing import Optional, List, Union
@@ -14,11 +13,7 @@ from typing import Optional, List, Union
 import numpy as np
 import pandas as pd
 
-# 路径归一化 helper（与 pipeline.get_step_output_dir 互为表里）
-_HERE = os.path.dirname(os.path.abspath(__file__))
-if _HERE not in sys.path:
-    sys.path.insert(0, _HERE)
-from _step_path_resolver import get_step_output_path, resolve_step_widget, resolve_subdir
+from src.gui.panels._step_path_resolver import get_step_output_path, resolve_step_widget, resolve_subdir
 
 from PyQt5.QtCore import Qt, QTimer, QThread, pyqtSignal, QAbstractTableModel
 from PyQt5.QtGui import QPixmap
@@ -1716,7 +1711,7 @@ class Step12VizPanel(QWidget):
         factory = getattr(main_window, '_panel_factory', None) if main_window else None
 
         # [新增] 直接从 Step 1 面板读取原始 .shp 的绝对路径，突破工作目录限制
-        step1_panel = factory.get_panel('step1_mask') if factory else None
+        step1_panel = factory.get_panel('step1') if factory else None
         if step1_panel:
             s1_conf = step1_panel.get_config()
             s1_mask = s1_conf.get('mask_path')