add contact is_verified flag to precompute filterable field

db/migrate/20250722093235_add_is_verified_to_contacts.rb

@@ -0,0 +1,7 @@
+class AddIsVerifiedToContacts < ActiveRecord::Migration[7.1]
+  def change
+    add_column :contacts, :is_verified, :boolean, default: false, null: false
+    add_index :contacts, :is_verified
+    add_index :contacts, [:account_id, :is_verified], name: 'index_contacts_on_account_id_and_is_verified'
+  end
+end