feat: use-case landing pages (court evidence, relationship proof)

[fellnerse]

Summary

Apple/Peak-Design-style landing pages for the two highest-intent use cases, built on the Nuxt 4 migration branch.

• /court-evidence — legal-evidence intent (harassment, divorce/custody, work disputes) with a CSS transcript mockup
• /proof-of-relationship — visa/immigration intent (proving a genuine relationship) with a CSS stats mockup

Both pages are indexable, carry per-locale SEO meta + FAQPage JSON-LD, cross-link to each other, and are prerendered for all six locales.

Changes

• components/landing/ — 10 shared components: LandingHero, LandingSection (light/white/dark themes + IntersectionObserver scroll reveal, respects prefers-reduced-motion), LandingCards, LandingSteps, LandingQuotes, LandingFaq, LandingCta, LandingButton, LandingDocMock, LandingStatsMock
• pages/court-evidence.vue, pages/proof-of-relationship.vue
• utils/translations.js — courtEvidence + relationshipProof namespaces, fully translated for en/de/es; fr/pt/it fall back to English (same precedent as the wrapped namespace)
• nuxt.config.js — both routes added to localizedPages (prerendered for all 6 locales)
• components/GlobalFooter.vue — footer links for both pages
• docs/landing-pages.md — competitor research + roadmap for follow-up pages

Competitor research

Direct competitors for the "chat → court-ready PDF" intent: chattocourt.com, chatformats.com (law-firm B2B), wachattopdf.com, printchat.app. Differentiators we push: 100% local processing (no upload/account, open source), statistics included in the document, free preview before the one-time purchase.

Verification

• nuxt generate — 70 routes prerendered, all 6 locales
• Playwright smoke test against the generated site: hero/CTA/footer/sections/FAQ/JSON-LD present on both pages; cross-links navigate; de/es render localized copy, fr/it fall back to English; CTA navigates to the analyzer; no console errors
• jest — passing

Open items

• Testimonials on /court-evidence are anonymized paraphrases of real customer reports — replace with verified, attributable quotes if possible
• Consider a real (blurred) PDF screenshot for the hero once the mockup is validated
• Track conversions per landing page (gtag events on the CTA buttons)

Follow-up pages (roadmap in docs/landing-pages.md)

1. /print-whatsapp-chat — highest-volume head term
2. /chat-memories — keepsake/memorial angle
3. /for-lawyers — B2B
4. /harassment-evidence — high intent, needs careful copy

[github-actions]

Visit the preview URL for this PR (updated for commit 63373ff):

https://whatsanalyze-80665--pr383-feat-use-case-landin-ghgjsxep.web.app

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