Read permission request kind needs better clarification between directory and file reads

If my working directory, contains a "." in the name there is not a clear way to distinguish between file and directory reads.

For example, I can get requests like this:

Kind: read
Path: q:\src\workspace.net

In this case path is a directory but also looks like a file name. It would be nice if all directory paths always ended with path separator to clarify.

首先定位读取权限请求的处理逻辑，以及格式化其 Path 值的代码。更新目录路径，使其包含路径分隔符，同时保留文件路径不变，然后验证请求是否按描述区分目录读取和文件读取。

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