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-admin-v2/node_modules/chromium-bidi/lib/bidiServer/SimpleTransport.d.ts

@@ -0,0 +1,13 @@
+import { EventEmitter } from '../utils/EventEmitter.js';
+/**
+ * Implements simple transport that allows sending string messages via
+ * `sendCommand` and receiving them via `on('message')`.
+ */
+export declare class SimpleTransport extends EventEmitter<Record<'message', string>> {
+    #private;
+    /**
+     * @param sendCommandDelegate delegate to be called in `sendCommand`.
+     */
+    constructor(sendCommandDelegate: (plainCommand: string) => Promise<void>);
+    sendCommand(plainCommand: string): Promise<void>;
+}