Fix ghost monitoring after removing URL from URL_config.ini

[as2931543asd]

📜 标题（Title）

请提供这个Pull Request中提议的更改的简洁描述：

• Fix ghost monitoring after removing URL from URL_config.ini

🔍 描述（Description）

请描述这个PR做了什么/为什么这些更改是必要的：

• Fixes a stale monitoring state when a live URL is removed directly from config/URL_config.ini.
• Previously, the stop path only handled commented URLs, so a URL deleted from the config could remain in running_list and keep showing as monitored.
• This change compares the current running URL list with the URLs still present in the config during reload, and appends missing running URLs to url_comments.
• This reuses the existing worker stop-and-cleanup flow instead of introducing a separate cleanup path.

📝 类型（Type of Change）

这个PR引入了哪种类型的更改？（请勾选所有适用的选项）

• 修复Bug
• 新功能
• 代码风格更新（格式化，局部变量）
• 重构（改进代码结构）
• 构建相关更改（依赖项，构建脚本等）
• 其他：请描述

🏗️ 测试（Testing）

请描述您已经进行的测试：

• Manually tested by adding a live URL, waiting until it entered monitoring state, then deleting the URL line directly from config/URL_config.ini.
• Verified that the deleted URL was routed through the existing stop signal path and the monitoring entry was cleared cleanly.
• Verified syntax with python3 -m py_compile main.py.

如果适用，请提供测试更改的说明：

• Start the program with a valid live URL in config/URL_config.ini.
• Wait until the URL enters monitoring state.
• Delete the URL line directly from config/URL_config.ini.
• Wait for the next config reload cycle and confirm the monitoring entry disappears.

📋 检查清单（Checklist）

在您创建这个PR之前，请确保以下所有框都被勾选，方法是在每个框中放置一个x：

• 我已经阅读了贡献指南文档
• 我的更改没有产生新的警告
• 我已经添加了覆盖我更改的测试
• 我已经相应地更新了文档（如果适用）
• 我遵循了这个项目的代码风格

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感谢您的贡献！