User backend registration

backend/db/migrations.sql

@@ -1,9 +1,7 @@
--- Create users table if it doesn't exist
 CREATE TABLE IF NOT EXISTS users (
-    id INT PRIMARY KEY,
+    id SERIAL PRIMARY KEY,
     email TEXT NOT NULL UNIQUE,
     name TEXT NOT NULL,
     password TEXT NOT NULL,
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
 );
-