First, thank you for your commitement to the project :)

[PROPOSED IMPROVEMENT]

Desktop file should be named after the app name.

Currently, with this settings:

Here is the Desktop file name I get:

com.github.ryonakano.pinit.44a35a5c-587b-4a81-ba8d-a1a9b61dbb7f.desktop

whereas I should have:

pomatez.desktop

Also, the location of the desktop file should be displayed so the user can find it easily.