Okay, I did some small edits to dia10.rpy (to allow more of the scenes to be in the replays / catch all possible ends), and added the 4 scenes to the gallery. Here's the modified dia10.rpy (identical for compressed/non-compressed, this is without the walkthrough mod applied...), and one comp_1gallery_rep.rpy and one uncomp_1gallery_rep.rpy . With the last two, download just the one you need, and rename it to 1gallery_rep.rpy and overwrite the one in the game folder...
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
(or wait for the dev to update the gallery, officially..
![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
... not making any guarantees that this will work, as intended, your mileage may vary...
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
)