Add multi-guest management: per-booking roster, docs, guest autocomplete

- Migration 010: booking_guests table (roster per booking with passport data)
- Backend: /bookings/:id/guests CRUD — auto-links/creates guest profiles by passport
- Backend: /hotel-settings GET/PATCH for key-value settings (require_guest_docs)
- BookingDetailPanel: Гости tab with multi-guest list, inline add/edit form,
  guest autocomplete (debounced search in guests table), child/main badges,
  passport fields for adults, scan stub, require-docs warning
- SettingsPage: toggle "Обязательное заполнение документов гостей"
- Pass slug prop through CalendarPage → BookingCalendar → BookingDetailPanel

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

src/pages/BookingsPage.tsx

@@ -444,6 +444,7 @@ export function BookingsPage() {
           room={room(selected.roomId)}
           rooms={rooms}
           allBookings={bookings}
+          slug={slug}
           onClose={() => setSelected(null)}
           onUpdate={handleUpdateBooking}
           onBulkUpdate={handleBulkUpdate}