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/date-fns/fp/_lib/convertToFP/index.js

@@ -0,0 +1,21 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = convertToFP;
+
+function convertToFP(fn, arity, a) {
+  a = a || [];
+
+  if (a.length >= arity) {
+    return fn.apply(null, a.slice(0, arity).reverse());
+  }
+
+  return function () {
+    var args = Array.prototype.slice.call(arguments);
+    return convertToFP(fn, arity, a.concat(args));
+  };
+}
+
+module.exports = exports.default;