Deduplicate in-flight /authentication/token requests per house so
that concurrent page loads do not each trigger a separate token
refresh, which was exhausting the Beds24 rate limit on first load.
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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Adds the complete Next.js website including i18n routing, house and
apartment pages, Beds24 v2 integration for live availability/pricing,
Stripe checkout, contact forms, Docker setup and deployment docs.
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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
