Remove engagements

We are not using this anymore!

db/migrate/20251219120755_drop_card_engagements.rb

@@ -0,0 +1,16 @@
+class DropCardEngagements < ActiveRecord::Migration[8.2]
+  def up
+    drop_table :card_engagements
+  end
+
+  def down
+    create_table :card_engagements, id: :uuid do |t|
+      t.references :account, type: :uuid, null: false
+      t.references :card, type: :uuid, null: false, index: true
+      t.string :status, null: false
+      t.timestamps
+    end
+
+    add_index :card_engagements, [ :account_id, :status ]
+  end
+end