Add a very rudimentary admin dashboard.

app/controllers/admin/stats_controller.rb

@@ -0,0 +1,19 @@
+class Admin::StatsController < AdminController
+  disallow_account_scope
+
+  layout "public"
+
+  def show
+    @accounts_last_7_days = Account.where(created_at: 7.days.ago..).count
+    @accounts_last_24_hours = Account.where(created_at: 24.hours.ago..).count
+
+    @identities_last_7_days = Identity.where(created_at: 7.days.ago..).count
+    @identities_last_24_hours = Identity.where(created_at: 24.hours.ago..).count
+
+    @top_accounts = Account
+      .where("cards_count > 0")
+      .order(cards_count: :desc)
+      .limit(10)
+      .includes(users: :identity)
+  end
+end

app/views/admin/stats/show.html.erb

@@ -0,0 +1,76 @@
+<% @page_title = "Account Statistics" %>
+
+<% content_for :header do %>
+  <h1 class="header__title"><%= @page_title %></h1>
+<% end %>
+
+<section class="settings">
+  <div class="settings__panel panel shadow center">
+    <header>
+      <h2 class="divider txt-medium margin-block-start">Recent Activity</h2>
+    </header>
+
+    <div class="flex gap margin-block-half">
+      <div class="flex flex-column gap-half flex-item-grow">
+        <div>Accounts Created</div>
+        <div class="flex gap-half">
+          <div class="flex flex-column gap-quarter flex-item-grow">
+            <div class="txt-x-small">7 days</div>
+            <div class="txt-large">
+              <strong><%= @accounts_last_7_days %></strong>
+            </div>
+          </div>
+          <div class="flex flex-column gap-quarter flex-item-grow">
+            <div class="txt-x-small">24 hours</div>
+            <div class="txt-large">
+              <strong><%= @accounts_last_24_hours %></strong>
+            </div>
+          </div>
+        </div>
+      </div>
+
+      <div class="flex flex-column gap-half flex-item-grow">
+        <div>Identities Created</div>
+        <div class="flex gap-half">
+          <div class="flex flex-column gap-quarter flex-item-grow">
+            <div class="txt-x-small">7 days</div>
+            <div class="txt-large">
+              <strong><%= @identities_last_7_days %></strong>
+            </div>
+          </div>
+          <div class="flex flex-column gap-quarter flex-item-grow">
+            <div class="txt-x-small">24 hours</div>
+            <div class="txt-large">
+              <strong><%= @identities_last_24_hours %></strong>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+
+  <div class="settings__panel panel shadow center">
+    <header>
+      <h2 class="divider txt-medium margin-block-start">
+        Top 10 Accounts by Card Count
+      </h2>
+    </header>
+
+    <ul class="margin-block-half">
+      <% @top_accounts.each do |account| %>
+        <% admin_user = account.users.find { |u| u.role == "admin" } %>
+        <li class="flex align-center gap-half margin-block-start-half">
+          <div class="flex-item-grow min-width overflow-ellipsis">
+            <strong><%= account.name %></strong>
+            <span class="txt-x-small txt-ink-medium"> • #<%= account.external_account_id %> • <%= admin_user&.identity&.email_address || "No admin" %></span>
+          </div>
+
+          <div class="txt-medium">
+            <strong><%= number_with_delimiter(account.cards_count) %></strong>
+            <span class="txt-x-small txt-ink-medium">cards</span>
+          </div>
+        </li>
+      <% end %>
+    </ul>
+  </div>
+</section>

config/routes.rb

@@ -227,5 +227,6 @@ Rails.application.routes.draw do
 
   namespace :admin do
     mount MissionControl::Jobs::Engine, at: "/jobs"
+    get "stats", to: "stats#show"
   end
 end