Improved import security, added browser tests

playwright.config.js

@@ -0,0 +1,22 @@
+import { defineConfig } from '@playwright/test';
+
+export default defineConfig({
+  testDir: './tests/e2e',
+  fullyParallel: false,
+  workers: 1,
+  timeout: 30_000,
+  reporter: 'list',
+  use: {
+    baseURL: 'http://127.0.0.1:4183',
+    timezoneId: 'Europe/Paris',
+    viewport: { width: 320, height: 640 },
+    // These tests use fresh contexts and synthetic fixtures; no user profile.
+    trace: 'off', screenshot: 'off', video: 'off',
+    launchOptions: process.env.PARDIS_CHROME_PATH ? { executablePath: process.env.PARDIS_CHROME_PATH } : {},
+  },
+  webServer: {
+    command: 'npm run preview -- --host 127.0.0.1 --port 4183 --strictPort',
+    url: 'http://127.0.0.1:4183',
+    reuseExistingServer: false,
+  },
+});