Delete Persona Link

Partial update. TWO THINGS THIS ROUTE CANNOT DO. (1) IT CANNOT DEACTIVATE A PERSONA, AND IT CANNOT CLEAR A FIELD. The update is issued as Updates(struct), and GORM skips every zero-valued member of a struct — so active: false is indistinguishable from active omitted, and "first_name": "" leaves the stored name alone. Only non-zero values are written. date_of_birth and date_of_death are pointers and are copied only when present, which is the same rule stated differently. (2) IT DOES NOT VALIDATE. validateCreatePersonaInput runs on POST only, so this route will happily write a name over the length limit, a future date of birth, or an age under 18 — all of which the create refuses. The 200 body is the struct read before the update with the written columns assigned back into it: GORM points its update at the model it was handed and assigns each column it sets, so the fields the request changed do come back with their new values. It is NOT a fresh read, so anything the database produced on its own — a trigger, a default, a computed column — is not reflected.