feat: Passwordless cross-device authentication

- Arkitektur: docs/auth/passwordless-architecture.md
- Backend: iom/quixzoom-auth-service/ (FastAPI + Redis)
- Webb: quixzoom-market-pages/se/login/ (QR-kod + polling)
- App: iom/quixzoom-app/src/features/auth/ (push + deep links)

Flöde: QR-kod → app-godkännande → webb-inloggad

landvex/node_modules/html-escaper/test/index.js

@@ -0,0 +1,23 @@
+delete Object.freeze;
+
+var html = require('../cjs');
+
+console.assert(
+  html.escape('&<>\'"') === '&amp;&lt;&gt;&#39;&quot;',
+  'correct escape'
+);
+
+console.assert(
+  html.escape('<>\'"&') === '&lt;&gt;&#39;&quot;&amp;',
+  'correct inverted escape'
+);
+
+console.assert(
+  '&<>\'"' === html.unescape('&amp;&lt;&gt;&#39;&quot;'),
+  'correct unescape'
+);
+
+console.assert(
+  '<>\'"&' === html.unescape('&lt;&gt;&#39;&quot;&amp;'),
+  'correct inverted unescape'
+);

landvex/node_modules/html-escaper/test/package.json

@@ -0,0 +1 @@
+{"type":"commonjs"}