Add create_db.sql for database and user provisioning

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

create_db.sql

@@ -0,0 +1,13 @@
+-- Run as root / admin user
+-- Usage: mysql -u root -p < create_db.sql
+
+CREATE DATABASE IF NOT EXISTS pops
+    CHARACTER SET utf8mb4
+    COLLATE utf8mb4_unicode_ci;
+
+CREATE USER IF NOT EXISTS 'pops'@'%'
+    IDENTIFIED WITH caching_sha2_password BY 'changeme';
+
+GRANT SELECT, INSERT, UPDATE, DELETE ON pops.* TO 'pops'@'%';
+
+FLUSH PRIVILEGES;