I have a big doubt related to the Schengen Visa immigration border process regarding double citizenship (EU + non-EU), specially with its "Out" stamp.
I entered Italy with my Brazilian passport (got "in" stamp for 90 days stay as tourist). I happened to have acquired my Italian citizenship on the same day I arrived, one month ago. Now I have double citizenship, BR and IT.
I don't plan on leaving Italy in the next 6 months and I still don't have an Italian national ID yet but I do have my new Italian birth certificate as a digital document.
My questions are:
(1) If I stay in Italy now, and my Italian national ID card takes more than 90 days to be completed, What will happen to the Schengen status since I might not have an "Out" stamp on my Brazilian passport with 90 days permit to stay?
(2) Can this give me any headache when I decide to leave (and re-enter) the EU in the far future, having my future-to-exist Italian National ID card and my Brazilian passport with me?
(3) Is there anywhere I can go or anything I can do to get an "Out" stamp on my non-eu passport without leaving Europe before the 90 days expire, in case the issuing of my Italian National ID takes longer than that?
PS: In case someone does not know, there is a weird Italian law, enforced most IT cities' Comune, that requires proof of residency before issuing national ID to an Italian citizen, which by law can take up to 6 months to be completed
Thanks in advance.