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/highlight.js/lib/languages/csp.js

@@ -0,0 +1,37 @@
+/*
+Language: CSP
+Description: Content Security Policy definition highlighting
+Author: Taras <oxdef@oxdef.info>
+Website: https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP
+
+vim: ts=2 sw=2 st=2
+*/
+
+/** @type LanguageFn */
+function csp(hljs) {
+  return {
+    name: 'CSP',
+    case_insensitive: false,
+    keywords: {
+      $pattern: '[a-zA-Z][a-zA-Z0-9_-]*',
+      keyword: 'base-uri child-src connect-src default-src font-src form-action ' +
+        'frame-ancestors frame-src img-src media-src object-src plugin-types ' +
+        'report-uri sandbox script-src style-src'
+    },
+    contains: [
+      {
+        className: 'string',
+        begin: "'",
+        end: "'"
+      },
+      {
+        className: 'attribute',
+        begin: '^Content',
+        end: ':',
+        excludeEnd: true
+      }
+    ]
+  };
+}
+
+module.exports = csp;