After several tests, migration to Mastodon seems to work 🎉🥳.

activitypub.c

@@ -2701,8 +2701,6 @@ int migrate_account(snac *user)
     xs *move = msg_move(user, new_account);
     xs *fwers = follower_list(user);
 
-    snac_log(user, xs_fmt("WORK IN PROGRESS - ANYTHING CAN HAPPEN"));
-
     const char *actor;
     xs_list_foreach(fwers, actor) {
         /* get the actor inbox, excluding the shared one */

main.c

@@ -298,6 +298,7 @@ int main(int argc, char *argv[])
             }
             else {
                 snac.config = xs_dict_set(snac.config, "alias", actor);
+                snac.config = xs_dict_set(snac.config, "alias_raw", url);
 
                 user_persist(&snac, 1);
             }