persona.txt gains a third strict rule: the first name is Navi — Latin even
inside Russian text, «Нави» known but not spoken by default — and the
instance codename is a second name, Latin and capitalised, never
transliterated. The model had only ever seen the Latin name plus the
identity block's lowercase codename, which is where "Нэви" came from.

None of this reached a server: deploy/env.template never set
NAVI_PERSONA_FILE, so an install from the template ran with
settings.navi_persona empty and every rule in the file inert. The variable
joins the template, where .env.example already had it.