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/redis-info/.checkbuild

@@ -0,0 +1,21 @@
+{
+  "checkbuild": {
+    "enable": ["jshint", "jsinspect", "nsp", "david"],
+    // don't exit immediately if one of the tools reports an error
+    "continueOnError": true,
+    // don't exit(1) even if we had some failures
+    "allowFailures": false
+  },
+  "jshint": {
+    "args": ["**/*.js", "!*node_modules/**", "!*example/**"]
+  },
+  "jsinspect": {
+    "args": ["**/*.js", "!*node_modules/**", "!*example/**", "!*tests/**"],
+    "diff": true,
+    "threshold": 40
+  },
+  "david":{
+    "stable": true
+  },
+  "nsp": {}
+}