v1.1.0: 增加交互提示、路径输入、窗口属性配置

- main.py: 增加show_banner()启动说明、各阶段[INFO]日志、结果摘要、任意键退出
- file_selector.py: 重写为路径输入→验证→空输入弹窗回退→不存在循环重试
- run.bat: 新建启动脚本(chcp 65001, mode con cols=80 lines=20, color 0B, title固定署名, pause)
- Code/docs/modification-assessment.md: 修改需求评估文档

Releases/v1.0.1/source/file_selector.py

@@ -0,0 +1,49 @@
+"""File selector — GUI dialog or CLI fallback.
+
+Provides a single function ``select_file`` that:
+  1. Opens a tkinter file-dialog when a display is available.
+  2. Falls back to ``sys.argv[1]`` in headless environments.
+"""
+
+import sys
+from typing import Optional
+
+
+def select_file() -> Optional[str]:
+    """Open a file-selection dialog and return the chosen path, or None.
+
+    Returns
+    -------
+    str | None
+        Selected file path, or ``None`` if the user cancelled / no
+        fallback is available.
+    """
+    # Try tkinter GUI dialog first
+    try:
+        import tkinter
+        import tkinter.filedialog
+
+        root = tkinter.Tk()
+        root.withdraw()  # hide the main window
+        root.attributes("-topmost", True)
+
+        filepath = tkinter.filedialog.askopenfilename(
+            title="选择 PinMAP 文件",
+            filetypes=[
+                ("Excel 文件", "*.xls *.xlsx"),
+                ("所有文件", "*.*"),
+            ],
+        )
+        root.destroy()
+
+        if filepath:
+            # tkinter may return a Tcl object; normalise to str
+            return str(filepath)
+        return None
+
+    except (ImportError, Exception):
+        # No display / no tkinter — fall back to CLI argument
+        if len(sys.argv) > 1:
+            return sys.argv[1]
+        print("[WARN] 无 GUI 环境且未提供命令行参数")
+        return None