Pre-launch design sync with Figma spec (#2154)

* Add lookbook + viewcomponent, organize design system file

* Build menu component

* Button updates

* More button fixes

* Replace all menus with new ViewComponent

* Checkpoint: fix tests, all buttons and menus converted

* Split into Link and Button components for clarity

* Button cleanup

* Simplify custom confirmation configuration in views

* Finalize button, link component API

* Add toggle field to custom form builder + Component

* Basic tabs component

* Custom tabs, convert all menu / tab instances in app

* Gem updates

* Centralized icon helper

* Update all icon usage to central helper

* Lint fixes

* Centralize all disclosure instances

* Dialog replacements

* Consolidation of all dialog styles

* Test fixes

* Fix app layout issues, move to component with slots

* Layout simplification

* Flakey test fix

* Fix dashboard mobile issues

* Finalize homepage

* Lint fixes

* Fix shadows and borders in dark mode

* Fix tests

* Remove stale class

* Fix filled icon logic

* Move transparent? to public interface

app/views/layouts/wizard.html.erb

@@ -1,17 +1,21 @@
 <%= render "layouts/shared/htmldoc" do %>
   <div class="bg-container flex flex-col h-dvh pt-safe">
     <header class="flex items-center justify-between p-8">
-      <%= link_to content_for(:previous_path) || root_path do %>
-        <%= lucide_icon "arrow-left", class: "w-5 h-5 text-secondary" %>
-      <% end %>
+      <%= render LinkComponent.new(
+        variant: "icon",
+        icon: "arrow-left",
+        href: content_for(:previous_path) || root_path
+      ) %>
 
       <nav>
         <%= yield :header_nav %>
       </nav>
 
-      <%= link_to content_for(:cancel_path) || root_path do %>
-        <%= lucide_icon "x", class: "text-secondary w-5 h-5" %>
-      <% end %>
+      <%= render LinkComponent.new(
+        variant: "icon",
+        icon: "x",
+        href: content_for(:cancel_path) || root_path
+      ) %>
     </header>
 
     <main class="grow px-8 pt-12 pb-32 overflow-y-auto">