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-site/admin/runtime-health.html

@@ -12,16 +12,16 @@ body { font-family: -apple-system, BlinkMacSystemFont, 'Inter', sans-serif; back
 .header .subtitle { color: #888; font-size: 0.9rem; }
 .main { padding: 40px; max-width: 1400px; margin: 0 auto; }
 .metrics { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; margin-bottom: 32px; }
-.metric { background: #111; border: 1px solid #333; border-radius: 12px; padding: 20px; }
+.metric { background: #111; border: 1px solid #333; border-radius: var(--radius-md); padding: 20px; }
 .metric-value { font-size: 2.5rem; font-weight: 700; color: #00d4ff; }
 .metric-label { font-size: 0.85rem; color: #888; margin-top: 4px; }
-.metric-status { font-size: 0.75rem; margin-top: 8px; padding: 4px 8px; border-radius: 4px; display: inline-block; }
+.metric-status { font-size: 0.75rem; margin-top: 8px; padding: 4px 8px; border-radius: var(--radius-sm); display: inline-block; }
 .status-ok { background: #1a3a1a; color: #4ade80; }
 .status-warn { background: #3a3a1a; color: #facc15; }
 .status-critical { background: #3a1a1a; color: #f87171; }
-.section { background: #111; border: 1px solid #333; border-radius: 12px; padding: 24px; margin-bottom: 24px; }
+.section { background: #111; border: 1px solid #333; border-radius: var(--radius-md); padding: 24px; margin-bottom: 24px; }
 .section h2 { font-size: 1.2rem; margin-bottom: 16px; color: #00d4ff; }
-.chart { height: 200px; background: #1a1a1a; border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #666; }
+.chart { height: 200px; background: #1a1a1a; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; color: #666; }
 table { width: 100%; border-collapse: collapse; }
 th { text-align: left; padding: 12px; color: #888; font-size: 0.8rem; }
 td { padding: 12px; border-top: 1px solid #222; font-size: 0.9rem; }