Add initial support for ingesting and verifying remote quote posts (#34370)

db/migrate/20250411094808_create_quotes.rb

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+class CreateQuotes < ActiveRecord::Migration[8.0]
+  def change
+    create_table :quotes do |t|
+      t.belongs_to :account, foreign_key: { on_delete: :cascade }, index: false, null: false
+      t.belongs_to :status, foreign_key: { on_delete: :cascade }, index: { unique: true }, null: false
+      t.belongs_to :quoted_status, foreign_key: { to_table: :statuses, on_delete: :nullify }, null: true
+      t.belongs_to :quoted_account, foreign_key: { to_table: :accounts, on_delete: :nullify }, null: true
+      t.integer :state, null: false, default: 0
+      t.string :approval_uri, index: { where: 'approval_uri IS NOT NULL' }
+      t.string :activity_uri, index: { unique: true, where: 'activity_uri IS NOT NULL' }
+
+      t.timestamps
+    end
+
+    # Can be used in the future to e.g. bulk-reject quotes from blocked accounts
+    add_index :quotes, [:account_id, :quoted_account_id]
+  end
+end

db/migrate/20250411095859_add_quote_id_to_status_edit.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddQuoteIdToStatusEdit < ActiveRecord::Migration[8.0]
+  def change
+    add_column :status_edits, :quote_id, :bigint, null: true
+  end
+end