Add Reset AI cache button to rules index

Add menu button with confirmation dialog to reset AI cache. Fix menu_item to safely handle non-standard confirm values.

app/components/DS/menu_item.rb

@@ -50,7 +50,8 @@ class DS::MenuItem < DesignSystemComponent
       data = merged_opts.delete(:data) || {}
 
       if confirm.present?
-        data = data.merge(turbo_confirm: confirm.to_data_attribute)
+        confirm_value = confirm.respond_to?(:to_data_attribute) ? confirm.to_data_attribute : confirm
+        data = data.merge(turbo_confirm: confirm_value)
       end
 
       if frame.present?

app/views/rules/index.html.erb

@@ -3,6 +3,17 @@
   <div class="flex items-center gap-2">
     <% if @rules.any? %>
       <%= render DS::Menu.new do |menu| %>
+        <% menu.with_item(
+          variant: "button",
+          text: "Reset AI cache",
+          href: clear_ai_cache_rules_path,
+          icon: "refresh-cw",
+          method: :post,
+          confirm: CustomConfirm.new(
+            title: "Reset AI cache?",
+            body: "Are you sure you want to reset the AI cache? This will allow AI rules to re-process all transactions. This may incur additional API costs.",
+            btn_text: "Reset Cache"
+          )) %>
         <% menu.with_item(
           variant: "button",
           text: "Delete all rules",