BookingModal: replace guestName with FIO+phone fields, remove passport tab

- Add lastName/firstName/middleName/phone fields to booking form
- Remove 'Документы гостя' tab entirely from BookingModal
- Auto-parse existing guestName into FIO parts when editing
- Add guestPhone to Booking type and propagate through CalendarPage/BookingsPage API calls
- Add middle_name to guests table (migration 011)
- Update guests backend route to include middle_name in all queries
- Add middleName to GuestApiType in api.ts
- Fix selectAcGuest in BookingDetailPanel to also fill middle_name
- Auto-open guest form pre-filled with booking FIO when no guests exist
- Add passport series+number lookup in BookingDetailPanel guest form

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/migrations/011_guests_middle_name.sql

@@ -0,0 +1,3 @@
+-- Add middle_name to guests table for autocomplete support
+ALTER TABLE guests
+  ADD COLUMN IF NOT EXISTS middle_name VARCHAR(100);