test: Add playwright main usage test

e2e/pages/login.page.ts

@@ -0,0 +1,29 @@
+import { type Page, type Locator } from '@playwright/test';
+
+export class LoginPage {
+  readonly usernameInput: Locator;
+  readonly passwordInput: Locator;
+  readonly serverSelect: Locator;
+  readonly submitButton: Locator;
+  readonly errorText: Locator;
+  readonly registerLink: Locator;
+
+  constructor(private page: Page) {
+    this.usernameInput = page.locator('#login-username');
+    this.passwordInput = page.locator('#login-password');
+    this.serverSelect = page.locator('#login-server');
+    this.submitButton = page.getByRole('button', { name: 'Login' });
+    this.errorText = page.locator('.text-destructive');
+    this.registerLink = page.getByRole('button', { name: 'Register' });
+  }
+
+  async goto() {
+    await this.page.goto('/login');
+  }
+
+  async login(username: string, password: string) {
+    await this.usernameInput.fill(username);
+    await this.passwordInput.fill(password);
+    await this.submitButton.click();
+  }
+}