🌸 Marketplace: Begin distinguishing the Cart from the Menu

- #2043
- #1326

While we definitely need a `Cart`; treating the `Cart` as the `Menu` is
a clunky ducky way of operating.

I'm going to start driving towards a more `Menu` centric approach so the
Shopping experience looks and feels a bit less nerd-forward.

Theoretically, this will entail:

- [ ] Sprouting `Product#show`
- [ ] Ditching the `Marketplace::Cart` ui almost completely, perhaps?
- [ ] Updating `buying_products_system_spec.rb`

app/furniture/marketplace/menu_component.html.erb

@@ -0,0 +1,10 @@
+<div class="grid grid-cols-3 gap-3">
+  <%- marketplace.products.each do |product| %>
+    <%= link_to(product.location, class: "no-underline") do %>
+      <%= render CardComponent.new do %>
+        <h3><%= product.name %></h3>
+        <p><%= product.description %></p>
+      <%- end %>
+    <%- end %>
+  <%- end %>
+</div>

app/furniture/marketplace/menu_component.rb

@@ -0,0 +1,14 @@
+class Marketplace
+  class MenuComponent < ApplicationComponent
+    attr_accessor :marketplace
+
+    def initialize(marketplace:, **kwargs)
+      super(**kwargs)
+      self.marketplace = marketplace
+    end
+
+    def render?
+      current_person.operator?
+    end
+  end
+end

app/furniture/marketplace/products/show.html.erb

@@ -0,0 +1,3 @@
+<%- breadcrumb :marketplace_product, product %>
+<h3><%= product.name %></h3>
+<p><%= product.description %></p>

app/furniture/marketplace/products_controller.rb

@@ -31,6 +31,10 @@ def index
       skip_authorization
     end
 
+    def show
+      authorize(product)
+    end
+
     def edit
       authorize(product)
     end