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/test-exclude/is-outside-dir-win32.js

@@ -0,0 +1,10 @@
+'use strict';
+
+const path = require('path');
+const minimatch = require('minimatch');
+
+const dot = { dot: true };
+
+module.exports = function(dir, filename) {
+    return !minimatch(path.resolve(dir, filename), path.join(dir, '**'), dot);
+};