Here's a convo I had with an AI. I know very little about coding. Did it meet the expectations I laid out?

Generate the code, in a single file, for a app, or tool, that functions as a free trial management tool. This application should specifically cater to Windows users and encompass the following features:

User Authentication & Security

Trial Tracking Functionality

User Interface & Experience

Data Management
Automation Features
Error Handling & Input Validation
Code Quality & Maintainability
Adherence to best coding practices to minimize bugs and eliminate code smells
Implementation of design patterns where appropriate to enhance code structure
Extensibility & Maintenance
Modular code structure to facilitate future feature additions
Comprehensive comments within the codebase
|You, AI, get to pick the tech stack we use, beyond Python.
Perhaps somethng like; Frontend: HTML, CSS, JavaScript with a framework like React or Vue.js.
Backend: Node.js with necessary libraries.
Database: SQLite or another lightweight database solution.

Please format your response as follows, without giving explanations. I will ask for explanations if needed;

1: Dependencies/libraries needed and how to get them
2: Code

1: Dependencies/libraries needed and how to get them
.NET Framework 4.7.2 or higher
Pre-installed on Windows 10 and later versions.
Visual Studio Community Edition
Download from Visual Studio Downloads.
SQLite NuGet Package
Install via NuGet Package Manager in Visual Studio:
Right-click on your project in the Solution Explorer.
Select "Manage NuGet Packages...".
Search for System.Data.SQLite and install it.
2: Code

using System;
using System.Data.SQLite;
using System.Windows.Forms;
using System.Security.Cryptography;
using System.Text;

namespace TrialManagementTool
{
    static class Program
    {
        // Main entry point of the application.
        [STAThread]
        static void Main()
        {
            // Initialize the application.
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);

            // Ensure the database and tables are created.
            DatabaseHelper.InitializeDatabase();

            // Show the login form.
            Application.Run(new LoginForm());
        }
    }

    // Static class for database operations.
    static class DatabaseHelper
    {
        private static readonly string connectionString = "Data Source=trial_management.db;Version=3;";

        // Initialize the database and tables.
        public static void InitializeDatabase()
        {
            using (var connection = new SQLiteConnection(connectionString))
            {
                connection.Open();

                string createUsersTable = @"CREATE TABLE IF NOT EXISTS Users (
                                                Id INTEGER PRIMARY KEY AUTOINCREMENT,
                                                Username TEXT NOT NULL UNIQUE,
                                                PasswordHash TEXT NOT NULL
                                            );";

                string createTrialsTable = @"CREATE TABLE IF NOT EXISTS Trials (
                                                 Id INTEGER PRIMARY KEY AUTOINCREMENT,
                                                 UserId INTEGER NOT NULL,
                                                 TrialName TEXT NOT NULL,
                                                 StartDate TEXT NOT NULL,
                                                 EndDate TEXT NOT NULL,
                                                 Status TEXT NOT NULL,
                                                 FOREIGN KEY(UserId) REFERENCES Users(Id)
                                             );";

                using (var command = new SQLiteCommand(createUsersTable, connection))
                {
                    command.ExecuteNonQuery();
                }

                using (var command = new SQLiteCommand(createTrialsTable, connection))
                {
                    command.ExecuteNonQuery();
                }
            }
        }

        // Register a new user.
        public static bool RegisterUser(string username, string password)
        {
            try
            {
                string passwordHash = SecurityHelper.HashPassword(password);

                using (var connection = new SQLiteConnection(connectionString))
                {
                    connection.Open();
                    string insertUser = "INSERT INTO Users (Username, PasswordHash) VALUES (@Username, @PasswordHash);";

                    using (var command = new SQLiteCommand(insertUser, connection))
                    {
                        command.Parameters.AddWithValue("@Username", username);
                        command.Parameters.AddWithValue("@PasswordHash", passwordHash);
                        command.ExecuteNonQuery();
                    }
                }

                return true;
            }
            catch
            {
                // Handle exceptions if user already exists.
                return false;
            }
        }

        // Authenticate a user.
        public static bool AuthenticateUser(string username, string password)
        {
            string storedHash = null;

            using (var connection = new SQLiteConnection(connectionString))
            {
                connection.Open();
                string selectUser = "SELECT PasswordHash FROM Users WHERE Username = @Username;";

                using (var command = new SQLiteCommand(selectUser, connection))
                {
                    command.Parameters.AddWithValue("@Username", username);

                    using (var reader = command.ExecuteReader())
                    {
                        if (reader.Read())
                        {
                            storedHash = reader.GetString(0);
                        }
                        else
                        {
                            return false;
                        }
                    }
                }
            }

            return SecurityHelper.VerifyPassword(password, storedHash);
        }

        // Get user ID by username.
        public static int GetUserId(string username)
        {
            using (var connection = new SQLiteConnection(connectionString))
            {
                connection.Open();
                string selectUserId = "SELECT Id FROM Users WHERE Username = @Username;";

                using (var command = new SQLiteCommand(selectUserId, connection))
                {
                    command.Parameters.AddWithValue("@Username", username);

                    using (var reader = command.ExecuteReader())
                    {
                        if (reader.Read())
                        {
                            return reader.GetInt32(0);
                        }
                        else
                        {
                            return -1;
                        }
                    }
                }
            }
        }

        // Add a new trial.
        public static void AddTrial(int userId, string trialName, DateTime startDate, DateTime endDate)
        {
            using (var connection = new SQLiteConnection(connectionString))
            {
                connection.Open();
                string insertTrial = @"INSERT INTO Trials (UserId, TrialName, StartDate, EndDate, Status)
                                       VALUES (@UserId, @TrialName, @StartDate, @EndDate, @Status);";

                using (var command = new SQLiteCommand(insertTrial, connection))
                {
                    command.Parameters.AddWithValue("@UserId", userId);
                    command.Parameters.AddWithValue("@TrialName", trialName);
                    command.Parameters.AddWithValue("@StartDate", startDate.ToString("yyyy-MM-dd"));
                    command.Parameters.AddWithValue("@EndDate", endDate.ToString("yyyy-MM-dd"));
                    command.Parameters.AddWithValue("@Status", "Active");
                    command.ExecuteNonQuery();
                }
            }
        }

        // Retrieve trials for a user.
        public static SQLiteDataReader GetTrials(int userId)
        {
            var connection = new SQLiteConnection(connectionString);
            connection.Open();
            string selectTrials = "SELECT TrialName, StartDate, EndDate, Status FROM Trials WHERE UserId = @UserId;";

            var command = new SQLiteCommand(selectTrials, connection);
            command.Parameters.AddWithValue("@UserId", userId);
            return command.ExecuteReader();
        }
    }

    // Static class for security-related functions.
    static class SecurityHelper
    {
        // Hash a password using SHA256.
        public static string HashPassword(string password)
        {
            using (SHA256 sha256 = SHA256.Create())
            {
                byte[] bytes = Encoding.UTF8.GetBytes(password);
                byte[] hash = sha256.ComputeHash(bytes);
                return Convert.ToBase64String(hash);
            }
        }

        // Verify a password against a hash.
        public static bool VerifyPassword(string password, string storedHash)
        {
            string hashOfInput = HashPassword(password);
            return StringComparer.Ordinal.Compare(hashOfInput, storedHash) == 0;
        }
    }

    // Login form for user authentication.
    public class LoginForm : Form
    {
        private TextBox txtUsername;
        private TextBox txtPassword;
        private Button btnLogin;
        private Button btnRegister;

        public LoginForm()
        {
            // Initialize form components.
            Text = "Login - Trial Management Tool";
            Width = 300;
            Height = 200;

            Label lblUsername = new Label() { Text = "Username:", Left = 10, Top = 20 };
            Label lblPassword = new Label() { Text = "Password:", Left = 10, Top = 60 };

            txtUsername = new TextBox() { Left = 100, Top = 20, Width = 150 };
            txtPassword = new TextBox() { Left = 100, Top = 60, Width = 150, PasswordChar = '*' };

            btnLogin = new Button() { Text = "Login", Left = 50, Width = 80, Top = 100 };
            btnRegister = new Button() { Text = "Register", Left = 150, Width = 80, Top = 100 };

            btnLogin.Click += BtnLogin_Click;
            btnRegister.Click += BtnRegister_Click;

            Controls.Add(lblUsername);
            Controls.Add(lblPassword);
            Controls.Add(txtUsername);
            Controls.Add(txtPassword);
            Controls.Add(btnLogin);
            Controls.Add(btnRegister);
        }

        // Event handler for login button click.
        private void BtnLogin_Click(object sender, EventArgs e)
        {
            if (DatabaseHelper.AuthenticateUser(txtUsername.Text, txtPassword.Text))
            {
                int userId = DatabaseHelper.GetUserId(txtUsername.Text);
                Hide();
                // Open the main application form.
                Application.Run(new MainForm(userId));
                Close();
            }
            else
            {
                MessageBox.Show("Invalid credentials. Please try again.", "Authentication Failed", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        // Event handler for register button click.
        private void BtnRegister_Click(object sender, EventArgs e)
        {
            if (DatabaseHelper.RegisterUser(txtUsername.Text, txtPassword.Text))
            {
                MessageBox.Show("Registration successful. You can now log in.", "Registration Successful", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            else
            {
                MessageBox.Show("Registration failed. Username may already exist.", "Registration Failed", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
    }

    // Main form of the application after login.
    public class MainForm : Form
    {
        private int userId;
        private DataGridView dgvTrials;
        private Button btnAddTrial;

        public MainForm(int userId)
        {
            // Initialize form components.
            this.userId = userId;
            Text = "Trial Management Tool";
            Width = 600;
            Height = 400;

            dgvTrials = new DataGridView() { Left = 10, Top = 10, Width = 560, Height = 300 };
            btnAddTrial = new Button() { Text = "Add Trial", Left = 10, Top = 320, Width = 100 };

            btnAddTrial.Click += BtnAddTrial_Click;

            Controls.Add(dgvTrials);
            Controls.Add(btnAddTrial);

            LoadTrials();
        }

        // Load trials from the database.
        private void LoadTrials()
        {
            dgvTrials.Rows.Clear();
            dgvTrials.Columns.Clear();

            dgvTrials.Columns.Add("TrialName", "Trial Name");
            dgvTrials.Columns.Add("StartDate", "Start Date");
            dgvTrials.Columns.Add("EndDate", "End Date");
            dgvTrials.Columns.Add("Status", "Status");

            using (var reader = DatabaseHelper.GetTrials(userId))
            {
                while (reader.Read())
                {
                    dgvTrials.Rows.Add(
                        reader["TrialName"],
                        reader["StartDate"],
                        reader["EndDate"],
                        reader["Status"]
                    );
                }
            }
        }

        // Event handler for add trial button click.
        private void BtnAddTrial_Click(object sender, EventArgs e)
        {
            var addTrialForm = new AddTrialForm(userId);
            addTrialForm.FormClosed += (s, args) => LoadTrials();
            addTrialForm.ShowDialog();
        }
    }

    // Form to add a new trial.
    public class AddTrialForm : Form
    {
        private int userId;
        private TextBox txtTrialName;
        private DateTimePicker dtpStartDate;
        private DateTimePicker dtpEndDate;
        private Button btnAdd;

        public AddTrialForm(int userId)
        {
            // Initialize form components.
            this.userId = userId;
            Text = "Add New Trial";
            Width = 300;
            Height = 250;

            Label lblTrialName = new Label() { Text = "Trial Name:", Left = 10, Top = 20 };
            Label lblStartDate = new Label() { Text = "Start Date:", Left = 10, Top = 60 };
            Label lblEndDate = new Label() { Text = "End Date:", Left = 10, Top = 100 };

            txtTrialName = new TextBox() { Left = 100, Top = 20, Width = 150 };
            dtpStartDate = new DateTimePicker() { Left = 100, Top = 60, Width = 150 };
            dtpEndDate = new DateTimePicker() { Left = 100, Top = 100, Width = 150 };

            btnAdd = new Button() { Text = "Add", Left = 100, Width = 80, Top = 150 };

            btnAdd.Click += BtnAdd_Click;

            Controls.Add(lblTrialName);
            Controls.Add(lblStartDate);
            Controls.Add(lblEndDate);
            Controls.Add(txtTrialName);
            Controls.Add(dtpStartDate);
            Controls.Add(dtpEndDate);
            Controls.Add(btnAdd);
        }

        // Event handler for add button click.
        private void BtnAdd_Click(object sender, EventArgs e)
        {
            // Validate input.
            if (string.IsNullOrWhiteSpace(txtTrialName.Text))
            {
                MessageBox.Show("Trial name cannot be empty.", "Input Error", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return;
            }

            if (dtpEndDate.Value <= dtpStartDate.Value)
            {
                MessageBox.Show("End date must be after start date.", "Input Error", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return;
            }

            // Add the trial to the database.
            DatabaseHelper.AddTrial(userId, txtTrialName.Text, dtpStartDate.Value, dtpEndDate.Value);

            MessageBox.Show("Trial added successfully.", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
            Close();
        }
    }
}