domain-skills(expedia): typeahead API, property URLs, affiliate shortlink chain

[britter21]

Field-tested 2026-06 while building a Booking→Expedia property matcher:

• Unauthenticated hotel typeahead API (/api/v4/typeahead/...&lob=HOTELS) — returns hotelId, names, and coordinates; works with plain curl_cffi chrome impersonation. 10× faster than scraping search results.
• Property URL routing: .h{id}. is the only routing key (slug cosmetic, Expedia 301s to canonical); startDate/endDate/rm1=a2:c8 pre-fill dates + occupancy.
• Trap: property pages 429 curl-ish clients while the typeahead stays 200 — construct URLs, don't fetch pages.
• expedia.tpx.lv shortlinks decoded: Travelpayouts → vio.com → Partnerize (prf.hn) → Button → expedia POS; marker recoverable from the vio hop; programmatic minting via the Travelpayouts links API (not chain reconstruction). HEAD dies mid-chain (405) — GET only.

🤖 Generated with Claude Code

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Summary by cubic

Adds a field-tested guide for Expedia covering the unauthenticated hotel typeahead API, property URL routing, and expedia.tpx.lv affiliate shortlinks. Enables faster (10x vs scraping) and more reliable property matching by constructing hotelId-based URLs with date/occupancy params and avoiding direct page fetches; includes GET-only guidance for shortlink chains.

^{Written for commit 1db9b4e. Summary will update on new commits.}

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