[Feature Request] Support comparing entire working directory against a specific commit

[riyuejiuzhao]

I frequently need to compare the state of my entire working directory (including uncommitted changes) against a specific historical commit. However, the current functionality only allows comparing a single uncommitted file against a commit, which is limiting when working on features that span multiple files.

I would like the ability to compare the entire workspace (all modified/uncommitted files) against a selected commit. This would provide a comprehensive diff view of all changes between a past state and the current working directory.

Currently, my workaround is to create a temporary commit for my working directory changes and then compare that commit against the target historical commit. This process is inefficient and requires extra steps to clean up (reset/squash) the temporary commit afterwards.

Is there an existing way to achieve this that I might have missed? If not, adding this feature would significantly streamline the workflow for reviewing current progress against previous versions.