had to invent main_app for url helpers to work when engine renders

Gemfile.lock

@@ -107,7 +107,7 @@ GEM
     coderay (1.1.3)
     concurrent-ruby (1.1.10)
     crass (1.0.6)
-    date (3.3.2)
+    date (3.3.3)
     debug (1.7.0)
       irb (>= 1.5.0)
       reline (>= 0.3.1)
@@ -117,9 +117,6 @@ GEM
       railties (>= 4.1.0)
       responders
       warden (~> 1.2.3)
-    devise-tailwindcssed (0.1.5)
-      rails (>= 5.2.3.4, < 7.1)
-      railties (> 4.0, < 7.1)
     diff-lcs (1.5.0)
     erubi (1.11.0)
     erubis (2.7.0)
@@ -333,7 +330,6 @@ DEPENDENCIES
   capybara
   debug
   devise
-  devise-tailwindcssed
   guard-rspec
   haml-rails
   html2haml

app/helpers/application_helper.rb

@@ -1,2 +1,5 @@
 module ApplicationHelper
+  def main_app
+    Rails.application.routes.url_helpers
+  end
 end

app/views/layouts/_header.haml

@@ -11,7 +11,11 @@
         = link_to "https://www.facebook.com/hubfeenix" , :target => "_blank" do
           = image_tag("fb" , class: "h-10 rounded-md")
       %li
-        %a.inline-flex.items-center.justify-center.h-12.px-6.font-medium.tracking-wide.text-white.transition.duration-200.rounded-lg.shadow-md.bg-green-800.hover:bg-blue-800.focus:shadow-outline.focus:outline-none{"aria-label" => "Sign up", :href => "/", :title => "Log in or Sign up"}
+        - if member_signed_in?
+          .inline-flex.items-center.justify-center.h-12.px-6.font-medium.tracking-wide.text-white.transition.duration-200.rounded-lg.shadow-md.bg-green-800.hover:bg-blue-800.focus:shadow-outline.focus:outline-none
+            =link_to current_member.email ,  main_app.member_path(current_member)
+        - else
+          %a.inline-flex.items-center.justify-center.h-12.px-6.font-medium.tracking-wide.text-white.transition.duration-200.rounded-lg.shadow-md.bg-green-800.hover:bg-blue-800.focus:shadow-outline.focus:outline-none{"aria-label" => "Sign up", :href => member_session_url, :title => "Log in or Sign up"}
             Login
     .lg:hidden.flex.items-center.justify-between
       .mr-20

config/routes.rb

@@ -1,7 +1,9 @@
 Rails.application.routes.draw do
-  devise_for :members
+
   resources  :members
 
+  devise_for :members
+
   mount Merged::Engine => "/merged"
 
   get ":id" , to: "merged/view#view" , id: :id

merged/sections.yml

@@ -182,7 +182,7 @@
   :updated_at: &2 2022-12-09 17:50:02.733622073 +02:00
   :page_id: 2
   :index: 1
-  :image_id: '44'
+  :image_id: 38
 - :template: section_cards
   :header: Sizes and kinds
   :text: We offer different sizes and different types of studios for artists. There