Playwright re-established. 54 test cases generated.

tests/navigation-desktop-navigation-rail.spec.ts

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+// spec: specs/gymflow-test-plan.md
+// seed: tests/core-auth.spec.ts
+
+import { test, expect } from '@playwright/test';
+
+test.describe('I. Core & Authentication', () => {
+  test('B. Navigation - Desktop Navigation Rail', async ({ page }) => {
+    // 1. Log in as a regular user.
+    await page.goto('http://192.168.50.234:3000/');
+    await page.getByRole('textbox', { name: 'user@gymflow.ai' }).fill('admin@gymflow.ai');
+    await page.locator('input[type="password"]').fill('admin1234');
+    await page.getByRole('button', { name: 'Login' }).click();
+
+    // 2. Ensure the browser window is wide enough to trigger desktop layout (e.g., >768px width).
+    await page.setViewportSize({ width: 1280, height: 720 });
+
+    // 3. Verify the vertical navigation rail is present on the left side.
+    await expect(page.getByRole('button', { name: 'Tracker' })).toBeVisible();
+
+    // 4. Click on each navigation item (Tracker, Plans, History, Stats, AI Coach, Profile).
+    // Click on 'Plans'
+    await page.getByRole('button', { name: 'Plans' }).click();
+    // Expected: The corresponding section of the application is displayed for each click.
+    await expect(page.getByText('My Plans')).toBeVisible();
+
+    // Click on 'History'
+    await page.getByRole('button', { name: 'History' }).click();
+    await expect(page.getByText('History')).toBeVisible();
+
+    // Click on 'Stats'
+    await page.getByRole('button', { name: 'Stats' }).click();
+    await expect(page.getByText('Stats')).toBeVisible();
+
+    // Click on 'AI Coach'
+    await page.getByRole('button', { name: 'AI Coach' }).click();
+    await expect(page.getByText('AI Coach')).toBeVisible();
+
+    // Click on 'Profile'
+    await page.getByRole('button', { name: 'Profile' }).click();
+    await expect(page.getByText('Profile')).toBeVisible();
+
+    // Click on 'Tracker' to complete the cycle
+    await page.getByRole('button', { name: 'Tracker', exact: true }).click();
+    await expect(page.getByText('Ready?')).toBeVisible();
+
+    // Expected: The navigation rail remains visible and functional.
+    await expect(page.getByRole('button', { name: 'Tracker' })).toBeVisible();
+  });
+});