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

Fix round-trip price filter and require return date

Rebuild frontend dist for price filter fix

Add benchmark mode: freeze system date to 2026-04-01 for deterministic behavior

Fix booking price mismatch: carry selected price through to payment

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

Rebuild frontend dist for HF Spaces deployment

Add round-trip date validation and 12-month booking window