pub async fn get_last_path(user_id: i64) -> Result<Option<String>, Error>Expand description
gaps2 #11 round 2 — read the “last viewed admin URL” for
user_id. Used by the admin index handler to redirect
/admin/ → the user’s last working changelist.
Returns None when no prefs row yet, when preferences.last_path
is missing, or when the value isn’t a string.