- Migration 009: add passport_series, passport_number, rating to guests table - Backend route /api/hotels/:slug/guests: list, get (with history), create/upsert by passport, update, delete - Frontend GuestsPage: loads from API, passport tab in modal, add guest form, search by passport - api.ts: add guests API methods and GuestApiType Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>