middleware.Timeout was the last use of go-chi/chi/v5/middleware (RealIP, the
other user, landed in #2099). Swap it for the local timeout helper (context
deadline + 504 on deadline, matching chi exactly; covered by TestTimeout),
which removes the go-chi/chi/v5/middleware package from the vendor tree.
The go-chi/chi module stays in go.mod — the router (chi.NewRouter etc.) still
uses it, so go.mod only shrinks after the router migration. Build, vet, race
tests and golangci-lint clean.
Dmitry VerkhoturovandUmputun
f4b236c66a