integration: add Playwright, axe and Lighthouse CI gates

Lock SEO, accessibility and crawlability with headless browser checks so regressions fail before a merge instead of after publication.

Co-authored-by: Cursor <cursoragent@cursor.com>

eslint.config.js

@@ -6,7 +6,17 @@ const prettier = require('eslint-config-prettier');
 
 module.exports = tseslint.config(
   {
-    ignores: ['dist/**', '.angular/**', 'node_modules/**', 'coverage/**'],
+    ignores: [
+      'dist/**',
+      '.angular/**',
+      'node_modules/**',
+      'coverage/**',
+      'e2e/**',
+      'playwright.config.ts',
+      'playwright-report/**',
+      'test-results/**',
+      '.lighthouseci/**',
+    ],
   },
   {
     files: ['**/*.ts'],