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/bser/package.json

@@ -0,0 +1,33 @@
+{
+  "name": "bser",
+  "version": "2.1.1",
+  "description": "JavaScript implementation of the BSER Binary Serialization",
+  "main": "index.js",
+  "directories": {
+    "test": "test"
+  },
+  "scripts": {
+    "test": "node test/bser.js"
+  },
+  "files": [
+    "index.js"
+  ],
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/facebook/watchman"
+  },
+  "keywords": [
+    "bser",
+    "binary",
+    "protocol"
+  ],
+  "author": "Wez Furlong <wez@fb.com> (http://wezfurlong.org)",
+  "license": "Apache-2.0",
+  "bugs": {
+    "url": "https://github.com/facebook/watchman/issues"
+  },
+  "homepage": "https://facebook.github.io/watchman/docs/bser.html",
+  "dependencies": {
+    "node-int64": "^0.4.0"
+  }
+}