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/Container.vue

@@ -0,0 +1,18 @@
+<script setup lang="ts">
+// Padded, max-width-centred section wrapper. Ported from landing-sections.jsx Container.
+withDefaults(defineProps<{
+  pad?: string
+  max?: number
+}>(), {
+  pad: '120px 64px',
+  max: 1280,
+})
+</script>
+
+<template>
+  <div :style="{ padding: pad }">
+    <div :style="{ maxWidth: `${max}px`, margin: '0 auto' }">
+      <slot />
+    </div>
+  </div>
+</template>