Add editable contents table

db/migrate/20250528092931_create_editable_contents.rb

@@ -0,0 +1,13 @@
+class CreateEditableContents < ActiveRecord::Migration[8.0]
+  def change
+    create_table :editable_contents do |t|
+      t.string :path
+      t.string :key
+      t.string :lang, default: "en"
+      t.text :content
+      t.boolean :rich_text, default: false
+
+      t.timestamps
+    end
+  end
+end