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/shared/notifications/_alert.html.erb

@@ -4,13 +4,13 @@
             data: { controller: "element-removal" } do %>
   <div class="h-5 w-5 shrink-0 p-px text-primary">
     <div class="flex h-full items-center justify-center rounded-full bg-destructive">
-      <%= lucide_icon "x", class: "w-3 h-3" %>
+      <%= icon "x", size: "xs" %>
     </div>
   </div>
 
   <%= tag.p message, class: "text-primary text-sm font-medium" %>
 
   <div class="ml-auto">
-    <%= lucide_icon "x", data: { action: "click->element-removal#remove" }, class: "w-5 h-5 text-secondary hover:text-gray-600 cursor-pointer" %>
+    <%= icon "x", data: { action: "click->element-removal#remove" }, class: "cursor-pointer" %>
   </div>
 <% end %>