Add puzzles to contests

db/migrate/20250315124339_add_contest_ref_to_puzzle.rb

@@ -0,0 +1,5 @@
+class AddContestRefToPuzzle < ActiveRecord::Migration[8.0]
+  def change
+    add_reference :puzzles, :contest, null: false, foreign_key: true
+  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_03_15_114657) do
+ActiveRecord::Schema[8.0].define(version: 2025_03_15_124339) do
   create_table "active_storage_attachments", force: :cascade do |t|
     t.string "name", null: false
     t.string "record_type", null: false
@@ -53,6 +53,8 @@ ActiveRecord::Schema[8.0].define(version: 2025_03_15_114657) do
     t.string "name"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.integer "contest_id", null: false
+    t.index ["contest_id"], name: "index_puzzles_on_contest_id"
   end
 
   create_table "sessions", force: :cascade do |t|
@@ -76,5 +78,6 @@ ActiveRecord::Schema[8.0].define(version: 2025_03_15_114657) do
   add_foreign_key "active_storage_attachments", "active_storage_blobs", column: "blob_id"
   add_foreign_key "active_storage_variant_records", "active_storage_blobs", column: "blob_id"
   add_foreign_key "contests", "users"
+  add_foreign_key "puzzles", "contests"
   add_foreign_key "sessions", "users"
 end