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/decompress-response/index.d.ts

@@ -0,0 +1,22 @@
+/// <reference types="node"/>
+import {IncomingMessage} from 'http';
+
+/**
+Decompress a HTTP response if needed.
+
+@param response - The HTTP incoming stream with compressed data.
+@returns The decompressed HTTP response stream.
+
+@example
+```
+import {http} from 'http';
+import decompressResponse = require('decompress-response');
+
+http.get('https://sindresorhus.com', response => {
+	response = decompressResponse(response);
+});
+```
+*/
+declare function decompressResponse(response: IncomingMessage): IncomingMessage;
+
+export = decompressResponse;