Function send_mms 

pub(crate) fn send_mms(
    to: &str,
    words: &str,
    media: &[(String, Vec<u8>)],
    from: &str,
) -> (Value, bool)

A multimedia message written here for the phone to send (docs/texts.md, “Multimedia messages sent from a computer”; the media reduced already, each its content type and bytes): refused at once when the phone would refuse it (said why); else each medium sealed into the sharing’s blobs (content-addressed: one sent twice travels once) and into this computer’s own media, so that the message shows it at once, then the request, whose media go up before it (media_to_send). Never a file’s own name: a medium is its content alone. {said, shared, key}.