Rename Entropy::Configuration to just Entropy

app/controllers/collections/entropies_controller.rb

@@ -0,0 +1,17 @@
+class Collections::EntropiesController < ApplicationController
+  include CollectionScoped
+
+  def update
+    @collection.entropy.update!(entropy_params)
+
+    render turbo_stream: [
+        turbo_stream.replace([ @collection, :entropy], partial: "collections/edit/auto_close", locals: { collection: @collection }),
+        turbo_stream_flash(notice: "Saved")
+      ]
+  end
+
+  private
+    def entropy_params
+      params.expect(collection: [ :auto_postpone_period ])
+    end
+end