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/node-addon-api/package-support.json

@@ -0,0 +1,21 @@
+{
+  "versions": [
+    {
+      "version": "*",
+      "target": {
+        "node": "active"
+      },
+      "response": {
+        "type": "time-permitting",
+        "paid": false,
+        "contact": {
+          "name": "node-addon-api team",
+          "url": "https://github.com/nodejs/node-addon-api/issues"
+        }
+      },
+      "backing": [ { "project": "https://github.com/nodejs" },
+                   { "foundation": "https://openjsf.org/" }
+      ]
+    }
+  ]
+}