Notes/Notes.Data/Models/Notes.cs

using System.Collections.Generic;

namespace Notes.Models;

public class Notes
{
    public List<Note> notes { get; }

    public Notes()
    {
        var loadAll = Note.LoadAll();
        this.notes = new List<Note>(loadAll);
    }

    public void Delete(Note note)
    {
        notes.Remove(note);
        note.Delete();
    }
}