mandate image on posts, update schema

site/app/models/post.rb

@@ -5,4 +5,5 @@ class Post < ApplicationRecord
   validates :description, presence: true
   validates :name, presence: true
   validates :hours, presence: true, numericality: { less_than_or_equal_to: 5, greater_than_or_equal_to: 0 }
+  validates :featured_image, presence: true
 end

site/db/migrate/20250504201326_add_user_id_to_posts.rb

@@ -1,5 +0,0 @@
-class AddUserIdToPosts < ActiveRecord::Migration[8.0]
-  def change
-    add_reference :posts, :user, null: false, foreign_key: true
-  end
-end

site/db/schema.rb

@@ -54,7 +54,7 @@ ActiveRecord::Schema[8.0].define(version: 2025_05_05_014600) do
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
     t.integer "hours"
-    t.integer "user_id", null: false
+    t.integer "user_id"
     t.index ["user_id"], name: "index_posts_on_user_id"
   end