feat: Initialize wxauto WeChat automation project with job extraction tools

- Add wxauto package with WeChat UI automation and message handling capabilities
- Implement job_extractor.py for automated job posting extraction from WeChat groups
- Add job_extractor_gui.py providing graphical interface for job extraction tool
- Create comprehensive documentation in Chinese covering GUI usage, multi-group support, and quick start guides
- Add build configuration files (build_exe.py, build_exe.spec) for packaging as standalone executable
- Include utility scripts for WeChat interaction (auto_send_msg.py, get_history.py, receive_file_transfer.py)
- Add project configuration files (pyproject.toml, setup.cfg, requirements.txt)
- Include test files (test_api.py, test_com_fix.py) for API and compatibility validation
- Add Apache 2.0 LICENSE and comprehensive README documentation
- Configure .gitignore to exclude build artifacts, logs, and temporary files

auto_send_msg.py

@@ -0,0 +1,72 @@
+# -*- coding: utf-8 -*-
+"""
+wxauto 自动发消息示例
+运行前请确保：1) 已安装依赖 pip install -e .
+              2) 电脑已登录微信 3.9 版本，且主窗口已打开
+"""
+import sys
+import time
+
+# 确保能导入当前项目的 wxauto（以脚本所在目录为项目根）
+import os
+_script_dir = os.path.dirname(os.path.abspath(__file__))
+if _script_dir not in sys.path:
+    sys.path.insert(0, _script_dir)
+
+from wxauto import WeChat
+
+
+def send_to_one(wx, who: str, msg: str):
+    """给指定联系人/群发一条消息"""
+    ret = wx.SendMsg(msg, who=who)
+    if ret:
+        print(f"[成功] 已向 [{who}] 发送: {msg}")
+    else:
+        print(f"[失败] 发送给 [{who}] 失败: {ret}")
+    return ret
+
+
+def send_to_many(wx, items: list, interval_sec: float = 2.0):
+    """
+    批量发消息
+    items: [(who, msg), ...] 或 [{"who": "张三", "msg": "你好"}, ...]
+    interval_sec: 每条消息间隔秒数，避免操作过快
+    """
+    for i, item in enumerate(items):
+        if isinstance(item, (list, tuple)):
+            who, msg = item[0], item[1]
+        else:
+            who, msg = item["who"], item["msg"]
+        send_to_one(wx, who, msg)
+        if i < len(items) - 1:
+            time.sleep(interval_sec)
+
+
+def main():
+    print("正在连接微信...")
+    try:
+        wx = WeChat()
+    except Exception as e:
+        print("连接失败，请确保：")
+        print("  1. 已安装依赖: pip install -e .")
+        print("  2. 微信 3.9 已登录并保持主窗口打开")
+        print(f"  错误: {e}")
+        return
+
+    # ========== 示例1：给一个人发一条消息 ==========
+    # 把 "文件传输助手" 改成你要发的联系人/群名
+    who = "文件传输助手"
+    msg = "这是一条由 wxauto 自动发送的消息"
+    send_to_one(wx, who, msg)
+
+    # ========== 示例2：批量发（可注释掉上面示例1，只保留下面） ==========
+    # send_to_many(wx, [
+    #     ("文件传输助手", "第一条"),
+    #     ("文件传输助手", "第二条"),
+    # ], interval_sec=2.0)
+
+    print("执行完毕。")
+
+
+if __name__ == "__main__":
+    main()