[Bug] File preview(with bat) does not update after file modification with vim

[waynewaynetsai]

Description:

When a file is modified using vim, the file preview(with bat) in jushuto does not update to reflect the changes. The preview only updates after restarting jushuto.

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Steps to reproduce:

1. Use jushuto to browse files and check the preview of a file.
2. Open the currently selected file with vim and modify the content.
3. Exit vim with :wq to return to jushuto.
4. Check the preview of the modified file in jushuto. The preview does not reflect the changes made.

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• Workaround: Restarting jushuto updates the file preview.

• Expected behavior: The file preview should update immediately after a file is modified, without needing to restart jushuto. This is the behavior observed in ranger.

• Version: joshuto-0.9.8

[kamiyaa]

There is code to track the timestamp of previews so it can refresh if file timestamp differs.
But the code for actually checking and refreshing is not implemented yet xd