Fix price filter to work in display currency (e.g. CAD)

Fix booking price mismatch: carry selected price through to payment

Add connection-type MCT, overnight/short-connection warnings

Add currency context and swap formatPrice across all pages

Fix stops filter hiding options after selection

Add flight booking flow with payment validation

Add HF Spaces deployment config and passkey auth

Add Google Flights-style step-based round-trip booking flow

Fix local-time display bug, add Asia departure patterns, popularity extension

Add flight amenities: legroom, WiFi, power/USB, video per segment

Add Google Flights-style "Best/Other" sections, emissions, rich detail view

Fix time+1 wrapping, add airline discount pricing, document fare engine

Fix 500 error on routes with empty carriers, align flight results grid

Add flight booking website (Google Flights clone)