Undo reverted migrations when needed

app/models/conversation.rb

@@ -11,6 +11,8 @@
 #
 
 class Conversation < ApplicationRecord
+  self.ignored_columns += %w(parent_status_id parent_account_id)
+
   validates :uri, uniqueness: true, if: :uri?
 
   has_many :statuses, dependent: nil

db/migrate/20250908181205_remove_reverted_conversation_changes.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class RemoveRevertedConversationChanges < ActiveRecord::Migration[8.0]
+  def up
+    remove_index :statuses, :conversation_id if index_exists?(:statuses, :conversation_id)
+    safety_assured { remove_column :conversations, :parent_status_id, if_exists: true }
+    safety_assured { remove_column :conversations, :parent_account_id, if_exists: true }
+  end
+
+  def down; end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[8.0].define(version: 2025_08_20_084312) do
+ActiveRecord::Schema[8.0].define(version: 2025_09_08_181205) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_catalog.plpgsql"