Removing lines under custom dynamic mark with lyluatex integration
I've been reproducing an old score, and wanted to be as faithful to the original layout as possible, so I came up (with the help of several people on here and in other internet places as well) with a custom dynamic mark, which almost does what I want.
Vertically, the dynamic mark is centered between the two staves, horizontally it comes after the end of the score, the text and its formatting is how I want it. The only thing is that the staves lines continue under, and I'd like for them to stop after the segno bar.
I attached a file to the mail with my code. If I remove the line 43 ((ly:grob-set-property! grob 'X-extent '(0 . 6))), I obtain what I describe as my goal, but when I integrate with latex/lyluatex, I have a cropped version in which the dynamic mark doesn't appear. The (ly:grob-set-property! grob 'X-extent '(0 . 6)) line ensures it's not cropped, but prolongs the staves lines.
If someone could tell me how to remove the extra staves lines, while guaranteeing that the dynamic is not cropped when integrating in latex with lyluatex, I'd be grateful :)