Fix e2e tests for CI environment

- Use `uv run disk-tree-server` in CI (command not on PATH otherwise)
- Add 15s timeout for homepage cold start

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: ryan-williams

ui/e2e/navigation.spec.ts

@@ -4,8 +4,8 @@ test.describe('Navigation', () => {
   test('homepage shows scan list or empty state', async ({ page }) => {
     await page.goto('/')
 
-    // Should show the header with tabs
-    await expect(page.getByRole('link', { name: 'Scans' })).toBeVisible()
+    // Should show the header with tabs (with longer timeout for cold start)
+    await expect(page.getByRole('link', { name: 'Scans' })).toBeVisible({ timeout: 15000 })
     await expect(page.getByRole('link', { name: 'S3' })).toBeVisible()
     await expect(page.getByRole('link', { name: 'Recent' })).toBeVisible()
 

ui/playwright.config.ts

@@ -18,7 +18,7 @@ export default defineConfig({
     },
   ],
   webServer: {
-    command: 'cd .. && disk-tree-server',
+    command: process.env.CI ? 'cd .. && uv run disk-tree-server' : 'cd .. && disk-tree-server',
     url: 'http://localhost:5001',
     reuseExistingServer: !process.env.CI,
     timeout: 30000,