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

node_modules/http-proxy-middleware/dist/path-rewriter.d.ts

@@ -0,0 +1,6 @@
+import type { IncomingMessage, ServerResponse } from 'node:http';
+import type { PathRewriteConfig } from './types.js';
+/**
+ * Create rewrite function, to cache parsed rewrite rules.
+ */
+export declare function createPathRewriter<TReq extends IncomingMessage = IncomingMessage, TRes extends ServerResponse = ServerResponse>(rewriteConfig: PathRewriteConfig<TReq, TRes> | undefined): ((path: string, req: TReq, res?: TRes | undefined, options?: import("./types.js").Options<TReq, TRes> | undefined) => string | undefined) | ((path: string, req: TReq, res?: TRes | undefined, options?: import("./types.js").Options<TReq, TRes> | undefined) => Promise<string | undefined>) | undefined;