Function place_texts 

pub fn place_texts(
    folder: &Path,
    own: &str,
    source: &Path,
) -> Result<bool, String>

This device’s texts to send copied into the sharing folder as a small file of its own, texts/send/<id>.jsonl (source: its own file of the part “texts”, every line sealed already): the sync app carries it, Sioul sends it first (send_urgent), the others read it beside the records’ copy, so that a request reaches the phone within its quarter of an hour whatever the records’ size. None here, none there. Whether it changed.