Merge upstream/final-form into master

Incorporates WIP alternative measurement form (single select form with
multiple select actions) and readouts controller.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

config/routes.rb

@@ -4,6 +4,7 @@ Rails.application.routes.draw do
 
   resources :measurements
 
+
   resources :readouts, only: [:new] do
     collection {get 'new/:id/discard', action: :discard, as: :discard}
   end