feat(website): book-a-demo & status pages, expand roadmap/contact

- /demo: book-a-demo page with a what-to-expect column + a form that
  composes a prefilled email to info@dezky.eu (interim, no backend); built
  to swap for a self-hosted scheduler later. Wire every "Book a demo" CTA
  (nav, hero, pricing, the previously-dead final-CTA button, and the
  contact/partners/migration/coming-soon CTAs) to /demo.
- /status: manually-maintained system-status page (overall banner,
  per-service rows, incident history). Live modules operational; Video/Chat
  marked coming soon.
- Roadmap: expand the board (5 items/column) + a "the bigger picture"
  themes grid + a "suggest a feature" CTA + a directional-timelines note.
- Contact: purpose-specific channels (info@ / legal@ / privacy@), a
  response-time note, and a company + "see it live" demo block.
- Drop /status from the [slug].vue stub map; tidy now-unused imports.

apps/website/components/landing/Pricing.vue

@@ -17,7 +17,7 @@ const copy = useCopy()
             <p :style="{ fontFamily: '\'Inter\', sans-serif', fontSize: '20px', lineHeight: 1.5, maxWidth: '640px', color: t.fgMuted, margin: 0, textWrap: 'pretty' }">{{ copy.pricing.lede }}</p>
           </div>
           <div :style="{ marginTop: '36px', display: 'flex', alignItems: 'center', gap: '16px' }">
-            <LandingBtn variant="primary" size="lg">{{ copy.pricing.cta }} →</LandingBtn>
+            <LandingBtn variant="primary" size="lg" @click="navigateTo('/demo')">{{ copy.pricing.cta }} →</LandingBtn>
           </div>
         </div>
         <div :style="{ background: t.surface, border: `1px solid ${t.border}`, borderRadius: '6px', padding: '36px 36px' }">