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-api/node_modules/split2/bench.js

@@ -0,0 +1,27 @@
+'use strict'
+
+const split = require('./')
+const bench = require('fastbench')
+const binarySplit = require('binary-split')
+const fs = require('fs')
+
+function benchSplit (cb) {
+  fs.createReadStream('package.json')
+    .pipe(split())
+    .on('end', cb)
+    .resume()
+}
+
+function benchBinarySplit (cb) {
+  fs.createReadStream('package.json')
+    .pipe(binarySplit())
+    .on('end', cb)
+    .resume()
+}
+
+const run = bench([
+  benchSplit,
+  benchBinarySplit
+], 10000)
+
+run(run)