Fix: add passport_issued_by/issue_date to guests table for full autocomplete

- Migration 014: add passport_issued_by, passport_issue_date to guests table
- guests.ts: include new fields in SELECT, INSERT, PATCH + encrypt/decrypt
- booking-guests.ts: sync issued_by/issue_date back to guests on update
- GuestApiType: add passportIssuedBy, passportIssueDate fields
- selectAcGuest: fill passport_issued_by and passport_issue_date from guest profile

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

backend/migrations/014_guests_passport_details.sql

@@ -0,0 +1,6 @@
+-- Migration 014: добавляем поля выдачи паспорта в таблицу guests
+-- чтобы при автозаполнении по серии+номеру подтягивались все паспортные данные
+
+ALTER TABLE guests
+  ADD COLUMN IF NOT EXISTS passport_issued_by  TEXT,
+  ADD COLUMN IF NOT EXISTS passport_issue_date TEXT;