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/ioredis/built/SubscriptionSet.d.ts

@@ -0,0 +1,14 @@
+import { CommandNameFlags } from "./Command";
+declare type AddSet = CommandNameFlags["ENTER_SUBSCRIBER_MODE"][number];
+declare type DelSet = CommandNameFlags["EXIT_SUBSCRIBER_MODE"][number];
+/**
+ * Tiny class to simplify dealing with subscription set
+ */
+export default class SubscriptionSet {
+    private set;
+    add(set: AddSet, channel: string): void;
+    del(set: DelSet, channel: string): void;
+    channels(set: AddSet | DelSet): string[];
+    isEmpty(): boolean;
+}
+export {};