It looks like app/page.tsx doesn't exist yet. The screenshot shows a complex page with database tables, a profile card, a "Send an Offer" form, and a "TEST SELECT COLUMN" button. Since the page doesn't exist in this project, I need to build it from the screenshot, placing the "Send an Offer" and "TEST SELECT COLUMN" sections on the right side as requested.

Let me read the layout and globals to understand the current setup:

Now I understand the setup. The page doesn't exist yet, so I need to build it from the screenshot. The key request is to place "Send an Offer" and "TEST SELECT COLUMN" on the right side. Let me create the page matching the screenshot layout with those sections positioned on the right.

Now let me create the main page with the "Send an Offer" and "TEST SELECT COLUMN" placed on the right side:

スクリーンショットの内容を再現し、レイアウトを2カラムのグリッド (grid-cols-[1fr_380px]) に変更しました。左側にデータベーススキーマとプロフィールカード、右側に「Send an Offer」フォームと「TEST SELECT COLUMN」ボタンを配置しています。これによりデスクトップ表示ではこの2つのセクションが常に右側に固定表示され、モバイルでは1カラムにフォールバックします。