feat: prepare ARR for controlled public deployment

database/000_create_booking_test_database.sql

@@ -0,0 +1,12 @@
+-- Independent booking-domain test database bootstrap.
+-- PostgreSQL 15+
+-- REVIEW DRAFT ONLY: this file has not been executed.
+-- Run while connected to the existing maintenance database.
+-- CREATE DATABASE cannot run inside a transaction block.
+
+CREATE DATABASE booking_test
+    WITH
+    TEMPLATE = template0
+    ENCODING = 'UTF8'
+    LC_COLLATE = 'en_US.utf8'
+    LC_CTYPE = 'en_US.utf8';