feat(website): gated coming-soon holding page with email signup

Add a standalone bilingual /coming-soon page (branded, dark, email signup
via mailto:info@dezky.eu, fires a waitlist-signup Umami event, noindex) plus
a global middleware that redirects every route to the locale-correct holding
page while NUXT_PUBLIC_COMING_SOON=true.

- Env-gated (default off, so dev and the live site are unaffected); flip the
  env in Coolify to show/hide the holding page with no code change.
- Preview the real site behind the gate via ?preview=<previewToken>
  (NUXT_PUBLIC_PREVIEW_TOKEN), which sets a 7-day cookie.
- Locale-preserving redirects (/da/* -> /da/coming-soon), no loops.

apps/website/pages/coming-soon.vue

@@ -0,0 +1,79 @@
+<script setup lang="ts">
+// Gated "coming soon" holding page. Shown for every route while
+// NUXT_PUBLIC_COMING_SOON=true (see middleware/coming-soon.global.ts). Interim
+// signup composes an email to info@dezky.eu — swap for a real list later.
+import { ref } from 'vue'
+import { C } from '~/utils/landingTokens'
+import { useCopy, useLang, track } from '~/composables/useLanding'
+
+definePageMeta({ layout: false })
+
+const copy = useCopy()
+const lang = useLang()
+const c = computed(() => copy.value.waitlist)
+const switchLocalePath = useSwitchLocalePath()
+
+const email = ref('')
+function submit() {
+  const subject = lang.value === 'da' ? 'Skriv mig op til dezky' : 'Add me to the dezky waitlist'
+  const body = lang.value === 'da'
+    ? `Skriv mig op til ventelisten: ${email.value}`
+    : `Please add me to the waitlist: ${email.value}`
+  track('waitlist-signup')
+  window.location.href = `mailto:info@dezky.eu?subject=${encodeURIComponent(subject)}&body=${encodeURIComponent(body)}`
+}
+
+function segStyle(code: 'en' | 'da') {
+  const active = lang.value === code
+  return {
+    padding: '5px 9px', border: 'none', cursor: 'pointer', borderRadius: '3px',
+    fontFamily: '\'JetBrains Mono\', monospace', fontSize: '11px', letterSpacing: '0.08em',
+    background: active ? C.bone : 'transparent',
+    color: active ? C.carbon : 'rgba(244,243,238,0.6)',
+    fontWeight: active ? 700 : 500,
+  }
+}
+
+useHead({
+  title: () => (lang.value === 'da' ? 'dezky — snart klar' : 'dezky — coming soon'),
+  meta: [{ name: 'robots', content: 'noindex, nofollow' }],
+})
+</script>
+
+<template>
+  <div :style="{ minHeight: '100vh', background: C.carbon, color: C.bone, display: 'flex', flexDirection: 'column', padding: 'clamp(24px, 5vw, 56px)' }">
+    <!-- Top bar: wordmark + language switcher -->
+    <div :style="{ display: 'flex', alignItems: 'center', justifyContent: 'space-between' }">
+      <div :style="{ display: 'flex', alignItems: 'center', gap: '12px' }">
+        <BrandNodeMark :size="32" :fg="C.signal" :accent="C.carbon" />
+        <span :style="{ fontFamily: '\'JetBrains Mono\', monospace', fontWeight: 600, fontSize: '16px', letterSpacing: '-0.02em' }">dezky</span>
+      </div>
+      <div :style="{ display: 'inline-flex', alignItems: 'center', gap: '2px', border: '1px solid rgba(244,243,238,0.2)', borderRadius: '5px', padding: '2px' }">
+        <NuxtLink :to="switchLocalePath('en')" :style="segStyle('en')">EN</NuxtLink>
+        <NuxtLink :to="switchLocalePath('da')" :style="segStyle('da')">DA</NuxtLink>
+      </div>
+    </div>
+
+    <!-- Center -->
+    <div :style="{ flex: 1, display: 'flex', flexDirection: 'column', justifyContent: 'center', maxWidth: '620px' }">
+      <div :style="{ fontFamily: '\'JetBrains Mono\', monospace', fontSize: '12px', letterSpacing: '0.18em', textTransform: 'uppercase', color: C.signal }">{{ c.eyebrow }}</div>
+      <h1 :style="{ fontFamily: '\'Inter Tight\', sans-serif', fontWeight: 600, fontSize: 'clamp(40px, 8vw, 84px)', letterSpacing: '-0.04em', lineHeight: 0.98, margin: '20px 0 0', textWrap: 'balance' }">{{ c.heading }}</h1>
+      <p :style="{ fontFamily: '\'Inter\', sans-serif', fontSize: 'clamp(16px, 2.4vw, 19px)', lineHeight: 1.55, color: 'rgba(244,243,238,0.72)', margin: '28px 0 0', textWrap: 'pretty' }">{{ c.body }}</p>
+
+      <form @submit.prevent="submit" :style="{ display: 'flex', gap: '12px', marginTop: '40px', flexWrap: 'wrap', maxWidth: '480px' }">
+        <input
+          v-model="email" type="email" required :placeholder="c.emailPh"
+          :style="{ flex: 1, minWidth: '220px', padding: '15px 18px', borderRadius: '4px', border: '1px solid rgba(244,243,238,0.2)', background: 'rgba(244,243,238,0.05)', color: C.bone, fontFamily: '\'Inter\', sans-serif', fontSize: '15px', boxSizing: 'border-box' }"
+        >
+        <button
+          type="submit"
+          :style="{ background: C.signal, color: C.carbon, border: 'none', padding: '15px 26px', fontFamily: '\'Inter\', sans-serif', fontSize: '15px', fontWeight: 600, borderRadius: '4px', cursor: 'pointer', whiteSpace: 'nowrap' }"
+        >{{ c.submit }} →</button>
+      </form>
+      <p :style="{ fontFamily: '\'Inter\', sans-serif', fontSize: '13px', color: 'rgba(244,243,238,0.45)', margin: '16px 0 0' }">{{ c.note }}</p>
+    </div>
+
+    <!-- Footer -->
+    <div :style="{ fontFamily: '\'JetBrains Mono\', monospace', fontSize: '11px', color: 'rgba(244,243,238,0.4)' }">dezky.eu · info@dezky.eu</div>
+  </div>
+</template>