set up for deployment

backend/scripts/000_extensions.sql

@@ -0,0 +1,8 @@
+-- Migration: Create required PostgreSQL extensions
+-- Extensions must be created before other migrations can use them
+
+-- uuid-ossp: Provides functions for generating UUIDs (uuid_generate_v4())
+CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
+
+-- pgcrypto: Provides cryptographic functions (used for token hashing)
+CREATE EXTENSION IF NOT EXISTS "pgcrypto";