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/react-toastify/scss/_variables.scss

@@ -0,0 +1,22 @@
+$rt-namespace: 'Toastify';
+$rt-toast-width: 320px !default;
+$rt-toast-background: #fff !default;
+$rt-toast-min-height: 64px !default;
+$rt-toast-max-height: 800px !default;
+
+$rt-color-default: #fff !default;
+$rt-color-dark: #121212 !default;
+$rt-color-info: #3498db !default;
+$rt-color-success: #07bc0c !default;
+$rt-color-warning: #f1c40f !default;
+$rt-color-error: #e74c3c !default;
+
+$rt-text-color-default: #aaa !default;
+$rt-text-color-dark: #fff !default;
+
+$rt-color-progress-default: linear-gradient(to right, #4cd964, #5ac8fa, #007aff, #34aadc, #5856d6, #ff2d55) !default;
+$rt-color-progress-dark: #bb86fc !default;
+$rt-mobile: "only screen and (max-width : 480px)" !default;
+$rt-font-family: sans-serif !default;
+$rt-z-index: 9999 !default;
+