test(ui): Add tests for StarterPage, MessageBox, and HTTPCodeView

[usernane]

File

Ui/StarterPage.php, Ui/MessageBox.php, Ui/HTTPCodeView.php

Current Coverage

0% (0/349 combined)

Scenarios to Cover

• StarterPage: renders correct HTML structure
• StarterPage: applies theme correctly
• StarterPage: page title, description, and meta tags are set
• MessageBox: renders with correct message and type (success/error/warning)
• MessageBox: custom CSS classes are applied
• HTTPCodeView: renders correct page for 404
• HTTPCodeView: renders correct page for 500

Notes

StarterPage alone is 289 statements at 0% — the largest untested UI class.