Refactor a test to the Page Object Model

Move all locators and interactions of the sign-in flow into page objects so the test reads as intent only.

1. 1Create a LoginPage class owning #username, #password, #login-button and #login-error, with open() and loginAs(email, password).
2. 2Create a DashboardPage class exposing the text of #welcome-message and #user-role.
3. 3In the test: open the login page, loginAs("qa@target.dev", "Test@123") and assert the welcome text is “Welcome back, QA Tester”.
4. 4Keep assertions in the test and locators in the page objects.

• At least one *Page class exists
• The dashboard is shown with the welcome message
• At least 1 assertion passes

username

qa@target.dev

password

Test@123