Add record to track overridden limits

Before, we were relying on just changing the cards_count in account, but this
could create problems where the system to calculate the next card number fails due
to the unique constraint.

saas/test/controllers/admin/accounts_controller_test.rb

@@ -1,10 +1,6 @@
 require "test_helper"
 
 class Admin::AccountsControllerTest < ActionDispatch::IntegrationTest
-  def saas
-    Fizzy::Saas::Engine.routes.url_helpers
-  end
-
   test "staff can access index" do
     sign_in_as :david
 
@@ -34,15 +30,15 @@ class Admin::AccountsControllerTest < ActionDispatch::IntegrationTest
     assert_response :success
   end
 
-  test "staff can update cards_count" do
+  test "staff can override card count" do
     sign_in_as :david
 
     untenanted do
-      patch saas.admin_account_path(accounts(:"37s").external_account_id), params: { account: { cards_count: 500 } }
+      patch saas.admin_account_path(accounts(:"37s").external_account_id), params: { account: { overridden_card_count: 500 } }
       assert_redirected_to saas.edit_admin_account_path(accounts(:"37s").external_account_id)
     end
 
-    assert_equal 500, accounts(:"37s").reload.cards_count
+    assert_equal 500, accounts(:"37s").reload.billed_cards_count
   end
 
   test "non-staff cannot access accounts" do

saas/test/controllers/admin/overridden_limits_controller_test.rb

@@ -0,0 +1,22 @@
+require "test_helper"
+
+class Admin::OverriddenLimitsControllerTest < ActionDispatch::IntegrationTest
+  test "staff can reset overridden limits" do
+    sign_in_as :david
+    account = accounts(:"37s")
+
+    # First set an override
+    account.override_limits(card_count: 500)
+    assert_equal 500, account.reload.billed_cards_count
+
+    # Then reset it
+    untenanted do
+      delete saas.admin_account_overridden_limits_path(account.external_account_id)
+      assert_redirected_to saas.edit_admin_account_path(account.external_account_id)
+    end
+
+    # Verify override was removed
+    assert_nil account.reload.overridden_limits
+    assert_equal account.cards_count, account.billed_cards_count
+  end
+end

saas/test/controllers/admin/stats_controller_test.rb

@@ -1,10 +1,6 @@
 require "test_helper"
 
 class Admin::StatsControllerTest < ActionDispatch::IntegrationTest
-  def saas
-    Fizzy::Saas::Engine.routes.url_helpers
-  end
-
   test "staff can access stats" do
     sign_in_as :david