Replace Playwright browser with pure HTTP for EMEX VIN decode:
- Vehicles.aspx, QuickGroups.aspx, QuickDetails.aspx all work
without authentication — no session/browser needed
- VIN decode drops from ~10-20s (Playwright) to ~1-5s (HTTP)
- Playwright browser kept as fallback if HTTP fails
Add multi-candidate selection for EMEX (mirrors PartsCatalogs flow):
- EmexCandidate interface matches PcatCar shape so VehicleSelectModal
renders without changes
- decodeVinOrCandidates(): single HTTP fetch returns vehicle OR
candidates (avoids double Vehicles.aspx request)
- decodeVinByIndex(): resolves user-selected candidate by index
- vehicles.service: emexCandidates in VinResolveResult, emexCarIndex
param in decodeVin/resolveVin, resolveEmexCarByIndex() method
- vehicles.controller: @Body("emexCarIndex") accepted
- search.tsx: candidateSource state, handleCandidateSelect sends
emexCarIndex or pcatCarId based on source
Test VIN NM417800006410193 (Fiat SIENA) now shows 2-option modal.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
