Read Public Profile

A published profile, by handle. Anonymous, read-only, allowlisted.

A handle asked for in the wrong case, or by a handle its owner has since renamed away from, answers 200 with canonicalUsername set and no profile body -- the caller (the page route) turns that into a 307 to the canonical URL. Visibility is re-checked before the redirect is offered, so a redirect cannot confirm a private profile exists.

A read that FAILS must surface as a 5xx, never as this 404: a transient database error answered "no such user" is a lie that crawlers and caches will keep.