feat: add Tkinter GUI application for ERP automation tools

Implement a comprehensive GUI application with the following features:
- Data Extraction tab: Extract material plan data from ERP system
- Material Validation tab: Validate material status and match deletions
- Data Query tab: Query database for production order information
- Settings tab: Manage ERP, database, browser, and path configurations

Key components:
- MainWindow: Tabbed interface with status bar
- ConfigManager: JSON-based configuration management
- LogText: Custom read-only text widget with colored logging
- FileSelector: Reusable file/directory selection component
- ProgressDialog: Modal progress dialog for long operations

Technical details:
- Thread-safe UI updates using root.after()
- Stdout capture for legacy script integration
- Event-based readonly mode allowing copy/select operations
- Custom widget composition to avoid Tkinter ScrolledText issues

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

gui/widgets/file_selector.py

@@ -0,0 +1,96 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+文件选择器组件
+
+提供文件/目录选择功能的组合组件。
+"""
+
+import tkinter as tk
+from tkinter import filedialog, ttk
+from typing import Optional, Callable
+
+
+class FileSelector(ttk.Frame):
+    """文件选择器组件"""
+
+    def __init__(
+        self,
+        parent,
+        label_text: str = "",
+        file_type: str = "file",
+        file_types: list = None,
+        initial_dir: str = "",
+        on_change: Optional[Callable] = None
+    ):
+        """
+        初始化文件选择器
+
+        Args:
+            parent: 父容器
+            label_text: 标签文本
+            file_type: 选择类型 ('file' 或 'directory')
+            file_types: 文件类型过滤器，如 [("Excel", "*.xlsx")]
+            initial_dir: 初始目录
+            on_change: 值改变时的回调函数
+        """
+        super().__init__(parent)
+
+        self.file_type = file_type
+        self.file_types = file_types or [("所有文件", "*.*")]
+        self.initial_dir = initial_dir
+        self.on_change = on_change
+
+        # 创建标签
+        if label_text:
+            self.label = ttk.Label(self, text=label_text)
+            self.label.grid(row=0, column=0, sticky="w", padx=(0, 5))
+
+        # 创建输入框
+        self.entry_var = tk.StringVar()
+        self.entry = ttk.Entry(self, textvariable=self.entry_var, width=50)
+        self.entry.grid(row=0, column=1, sticky="ew", padx=5)
+
+        # 创建浏览按钮
+        self.browse_button = ttk.Button(self, text="浏览...", command=self._browse)
+        self.browse_button.grid(row=0, column=2, padx=5)
+
+        # 配置列权重
+        self.columnconfigure(1, weight=1)
+
+    def _browse(self) -> None:
+        """打开文件/目录选择对话框"""
+        current_path = self.entry_var.get() or self.initial_dir
+
+        if self.file_type == "file":
+            path = filedialog.askopenfilename(
+                title="选择文件",
+                initialdir=current_path,
+                filetypes=self.file_types
+            )
+        else:  # directory
+            path = filedialog.askdirectory(
+                title="选择目录",
+                initialdir=current_path
+            )
+
+        if path:
+            self.entry_var.set(path)
+            if self.on_change:
+                self.on_change(path)
+
+    def get(self) -> str:
+        """获取当前选择的路径"""
+        return self.entry_var.get()
+
+    def set(self, path: str) -> None:
+        """设置路径"""
+        self.entry_var.set(path)
+
+    def clear(self) -> None:
+        """清空路径"""
+        self.entry_var.set("")
+
+    def is_empty(self) -> bool:
+        """检查是否为空"""
+        return not self.entry_var.get()