Add contest param for offline form participation

db/migrate/20251030092221_add_offline_form_to_contest.rb

@@ -0,0 +1,5 @@
+class AddOfflineFormToContest < ActiveRecord::Migration[8.0]
+  def change
+    add_column :contests, :offline_form, :boolean, default: false
+  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_10_29_155116) do
+ActiveRecord::Schema[8.0].define(version: 2025_10_30_092221) do
   create_table "active_storage_attachments", force: :cascade do |t|
     t.string "name", null: false
     t.string "record_type", null: false
@@ -92,6 +92,7 @@ ActiveRecord::Schema[8.0].define(version: 2025_10_29_155116) do
     t.string "slug"
     t.string "lang", default: "en"
     t.boolean "public", default: false
+    t.boolean "offline_form", default: false
     t.index ["slug"], name: "index_contests_on_slug", unique: true
     t.index ["user_id"], name: "index_contests_on_user_id"
   end