Add notifications of severed relationships (#27511)

db/migrate/20240320140159_create_account_relationship_severance_events.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+class CreateAccountRelationshipSeveranceEvents < ActiveRecord::Migration[7.1]
+  def change
+    create_table :account_relationship_severance_events do |t|
+      t.belongs_to :account, foreign_key: { on_delete: :cascade }, null: false, index: { unique: true }
+      t.belongs_to :relationship_severance_event, foreign_key: { on_delete: :cascade }, null: false, index: { unique: true }
+
+      t.integer :relationships_count, default: 0, null: false
+
+      t.timestamps
+    end
+  end
+end