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/transaction.d.ts

@@ -0,0 +1,13 @@
+import { ChainableCommander } from "./utils/RedisCommander";
+export interface Transaction {
+    pipeline(commands?: unknown[][]): ChainableCommander;
+    multi(options: {
+        pipeline: false;
+    }): Promise<"OK">;
+    multi(): ChainableCommander;
+    multi(options: {
+        pipeline: true;
+    }): ChainableCommander;
+    multi(commands?: unknown[][]): ChainableCommander;
+}
+export declare function addTransactionSupport(redis: any): void;