feat(配置): 增加playwright_dir配置项并优化浏览器路径查找逻辑

添加playwright_dir配置项以支持自定义浏览器路径
优化打包环境和开发环境下的浏览器路径查找逻辑，优先使用配置中的路径
删除不再使用的build.bat打包脚本

config_manager.py

@@ -25,7 +25,8 @@ class ConfigManager:
             "user_agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36",
             "fetch_interval": 60,
             "retry_times": 3,
-            "retry_interval": 5
+            "retry_interval": 5,
+            "playwright_dir": ""
         },
         "ui": {
             "opacity": 0.9,
@@ -131,7 +132,8 @@ class ConfigManager:
 
     def update_spider(self, target_url: str = None, xpath: str = None,
                       user_agent: str = None, fetch_interval: int = None,
-                      retry_times: int = None, retry_interval: int = None):
+                      retry_times: int = None, retry_interval: int = None,
+                      playwright_dir: str = None):
         """更新爬虫配置"""
         if target_url:
             self.config["spider"]["target_url"] = target_url
@@ -145,6 +147,8 @@ class ConfigManager:
             self.config["spider"]["retry_times"] = retry_times
         if retry_interval:
             self.config["spider"]["retry_interval"] = retry_interval
+        if playwright_dir:
+            self.config["spider"]["playwright_dir"] = playwright_dir
         logger.info("爬虫配置已更新")
         self.save_config()