feature: Move cache to its own directory to follow XDG standards.

[flipper]

Cache should not be in the same directory as the configuration. It mostly only applies to linux.

See here for what each folder maps to https://xdg-net.github.io/Xdg.Directories/docs/defaults.html

[love-linger]

This app supports Portable Mode for Windows packages and Linux AppImages. Therefore, we need to store all files generated by SourceGit in a single directory.

[love-linger]

Moreover, I believe that doing so will bring another benefit: when we want to delete SourceGit, we can be certain that all files generated by SourceGit can be easily deleted without any residues.

[flipper]

This app supports Portable Mode for Windows packages and Linux AppImages. Therefore, we need to store all files generated by SourceGit in a single directory.

Portable mode should still be supported is there anything I missed?

[flipper]

Moreover, I believe that doing so will bring another benefit: when we want to delete SourceGit, we can be certain that all files generated by SourceGit can be easily deleted without any residues.

Correct. When running on Mac or Windows everything is in a single directory.

But on Linux it is two folders. The cache does not belong next to configuration files.

[love-linger]

I've pushed a commit that moves data from $XDG_CONFIG_HOME/SourceGit or ~/.sourcegit to $XDG_DATA_HOME/SourceGit on Linux

[flipper]

I've pushed a commit that moves data from $XDG_CONFIG_HOME/SourceGit or ~/.sourcegit to $XDG_DATA_HOME/SourceGit on Linux

What else does source git store? It should be in .config if it's only configuration

[love-linger]

The files generated by SourceGit do not strictly distinguish between configuration files, cache data, solidified data, runtime process-related files, etc. All files generated by it are uniformly regarded as program data.

[flipper]

The files generated by SourceGit do not strictly distinguish between configuration files, cache data, solidified data, runtime process-related files, etc. All files generated by it are uniformly regarded as program data.

On Windows? Correct

But on Linux config files are in .config/appname
And cache files are in .cache/appname

[flipper]

I saw your commits you did that was basically what this PR is doing. But you are hardcoding the values of XDG dirs. They are env vars. Not static values.