What Cursor is and where things live

• Cursor is a code editor with AI built in. Your files are on the left, the open file is in the middle, and the Agent panel sits at the side.
• Download it from cursor.com/download, open it and sign in. Then pick File > Open Folder to open your project.
• There's a Free plan with limited use, paid plans for individuals, and Teams or Enterprise for companies. At work, sign in with the account your company set up.
• Press Cmd+I (Ctrl+I on Windows) to open Agent, the assistant that reads, edits and runs code. A chat is one conversation with Agent. Start a new chat when you switch tasks.
• The mode picker sets what Agent may do. Agent mode can edit files. Ask mode only reads and answers. A checkpoint is a saved snapshot of your files that you can roll back to.

export function cartTotal(items: Item[]) {
  return items.reduce((sum, i) => sum + i.price * i.qty, 0);
}