feat(website): add Nuxt 4 marketing landing page

New standalone apps/website (Nuxt 4) serving the public marketing site at
dezky.local / www.dezky.local. The customer portal moves off the root domain
to app.dezky.local only.

Landing page ported from the Dezky design handoff: light theme, Danish
default, hero variant A, with a working da/en toggle. Self-contained colour
system threaded through components (utils/landingTokens.ts), full bilingual
copy (utils/landingCopy.ts), and shared state (composables/useLanding.ts).
Sections live under components/landing/* with the Node logo under
components/brand/*.

Wired into docker-compose (website service, volume, Traefik labels, network
aliases) and bootstrap.sh (hosts list + service URLs).

apps/website/components/landing/PartnerCard.vue

@@ -0,0 +1,37 @@
+<script setup lang="ts">
+// A single "partner brand" row in the whitelabel demo.
+// Ported from landing-sections.jsx PartnerCard.
+import { computed } from 'vue'
+const props = withDefaults(defineProps<{
+  fg: string
+  bg: string
+  border: string
+  accent: string
+  name: string
+  subtitle: string
+  placeholder?: boolean
+}>(), { placeholder: false })
+
+const initial = computed(() => props.name[0].toUpperCase())
+</script>
+
+<template>
+  <div :style="{
+    background: bg, border: `1px solid ${border}`, borderRadius: '4px',
+    padding: '20px 22px', display: 'flex', alignItems: 'center', gap: '16px',
+    opacity: placeholder ? 0.55 : 1,
+    borderStyle: placeholder ? 'dashed' : 'solid',
+  }">
+    <div :style="{
+      width: '44px', height: '44px', borderRadius: '4px', background: accent,
+      display: 'flex', alignItems: 'center', justifyContent: 'center',
+      fontFamily: '\'Inter Tight\', sans-serif', fontWeight: 700,
+      fontSize: '22px', color: '#FFF', letterSpacing: '-0.02em', flexShrink: 0,
+    }">{{ initial }}</div>
+    <div :style="{ flex: 1 }">
+      <div :style="{ fontFamily: '\'Inter Tight\', sans-serif', fontWeight: 600, fontSize: '17px', color: fg, letterSpacing: '-0.02em' }">{{ name }}</div>
+      <div :style="{ fontFamily: '\'JetBrains Mono\', monospace', fontSize: '11px', color: 'rgba(0,0,0,0.5)', marginTop: '2px' }">{{ subtitle }}</div>
+    </div>
+    <div :style="{ fontFamily: '\'JetBrains Mono\', monospace', fontSize: '10px', color: 'rgba(0,0,0,0.4)', letterSpacing: '0.1em', textTransform: 'uppercase' }">powered by dezky</div>
+  </div>
+</template>