Wrap /user/{username} in RequireAuth middleware (closes #60)

internal/server/routes.go

@@ -106,6 +106,7 @@ func (s *Server) setupPageRoutes() {
 func (s *Server) setupUserRoutes() {
 	s.router.Route("/user/{username}", func(r chi.Router) {
 		r.Use(s.mw.CSRF())
+		r.Use(s.mw.RequireAuth())
 		r.Get("/", s.h.HandleProfile())
 	})
 }